a senate committee has 8 republicans and 6 democrats. in how many ways can we form a subcommittee with 3 republicans and 2 democrats?

Answers

Answer 1

840  ways can we form a subcommittee with 3 republicans and 2 democrats

Given that

A combination in mathematics is a choice made from a group of separate elements where the order of the selection is irrelevant (unlike permutations). Three fruits, such as an apple, an orange, and a pear, for instance, can be combined into three different pairs: an apple and a pear, an apple and an orange, or a pear and an orange. A k-combination of a set S is officially defined as a subset of S's k unique elements. So, if and only if each combination contains the same elements, two combinations are said to be identical. (It is not important how each set's members are arranged.) If there are n elements in the set, then C kn is the number of k-combinations.

a senate committee has 8 republicans and 6 democrats.

now, we need to find how many ways can we form a subcommittee with 3 republicans and 2 democrats

= 8[tex]C_{3}[/tex] × 6[tex]C_{2}[/tex]

=[tex]\frac{8!}{5!3!}[/tex] × [tex]\frac{6!}{4!2!}[/tex]

=56 × 15

=840

840  ways can we form a subcommittee with 3 republicans and 2 democrats

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Related Questions

Calculate the range, variance, and standard deviation for the following samples a. 43, 41, 48, 47, 49 b. 100, 1, 3, 95, 70, 4, 6, 10, 5 c. 100, 1, 3, 30, 70, 30, 43, 5 a. The range is 8 Type an integer or a decimal. Do not round.) The variance is 11.80 (Round to two decimal places as needed.) The standard deviation is 3.4 (Round to one decimal place as needed.) b. The range is 99 (Type an integer or a decimal. Do not round.) The variance is 1813.50 (Round to two decimal places as needed.) The standard deviation is 42.6 (Round to one decimal place as needed.) c. The range is 99 (Type an integer or a decimal. Do not round.) The variance is 1234.79 (Round to two decimal places as needed.) he standard deviation is (Round to one decimal place as needed.)

Answers

The range, variance, and standard deviation are 8, 21.10, 445.21.

The range, variance, and standard deviation are 99, 40.14,1612

What is data?

Data is a collection of measurements or observations used as a source of information. There are numerous types of data and numerous ways to represent data.

Given data is

43, 41, 48, 47, 49

Arrange them in ascending order:

41, 43, 47, 48,49

The range is (49 - 41) =8

The mean is (41+43+47+48+49)/5 =45.6

Data      deviation from mean    square  deviation

41                         4.6                         21.16

43                         2.6                        6.76

47                         -1.4                        1.96

48                         -2.4                        5.76

49                         -3.4                        11.56

Total                                                  47.2

The standard deviation is s = √[(x-μ)²/N] = 21.10

The variance is s² = 445.21

Given data is

100, 1, 3, 95, 70, 4, 6, 10, 5

Arrange them in ascending order:

1, 3, 4, 5, 6, 10, 70, 95, 100

The range is (100 - 1) = 99

The mean is (1+3+4+6+5+10+70+95+100)/9 =32.67

Data      deviation from mean    square  deviation

1                         31.67                         1002.99

3                         29.67                       880.31

4                         28.67                        821.97

5                        27.67                         756.63

6                         26.67                        711.29

10                         22.67                      513.93

70                        -37.33                       1393.52

95                        -62.33                      3885.03

100                         -3.33                        4533.33

Total                                                     14508.0001

The standard deviation is s = √[(x-μ)²/N] = 40.14

The variance is s² = 1612

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There is a 25% chance that you will have to work tonight and cannot study for the big
math test. if you study, then you have an 80% chance of earning a good grade. if
do not study, you only have a 30% chance of earning a good grade.
you

Answers

Therefore ,as a result, the answer to the probability problem is 67.5% chance that you get good scores.

What exactly does the probability process entail?

Probability theory is a branch of mathematics that focuses on calculating the likelihood that a statement is true or that an event will occur. Any number in 0 and 1, with 1 signifying certainty and 0 generally reflecting the likelihood of occurrence, can be used to represent a chance. Probability is a diagrammatic model of range the chance or likelihood that an event will occur.

Here,

Given : There is a 0.25 percent probability that we work tonight without studying,

a 0.80 percent chance that you study and get high grades, and

a 0.30 percent chance that you don't study and get a good grade.

To calculate the likelihood that we will receive high marks,

multiply by: 0.25 * 0.30 + 0.75 * 0.8

=> 0.075 + 0.60 => 0.675

You have a 67.5% chance of getting good grades.

As a result, the answer to the probability problem is 67.5% chance that you get good scores.

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This meal originally costs $75.00.
Fatima used a 20% off coupon and then tax was added.
The total after coupon and tax was $75.00.
What was the tax rate?

Answers

The discount given on the cost of the meal is $15

How to calculate tax on a given price?

When a government imposes an obligational fee or financial charge on an individual or group in order to raise funds for public projects that support the best facilities and infrastructure, the action is referred to as a tax.

step1

According to the question, we are given the following information

The original cost of the meal = $75

Off coupon = 20%

step2

Required

The number of coupons given

coupon amount = 0.2 * 75

coupon amount = $15

Hence the discount given on the cost of the meal is $15

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If the original price was $75 and Fatima used a 20% coupon, then Fatima saved $15.

    0.20 x 75 = 15

This means the cost of the meal that was taxed was a $60 meal.

Now we also know that after tax, the price of the meal came back to a $75 cost.  This means that the amount of tax was also $15, but it's a $15 tax on a $60 meal, so this is a 25% tax.

    $15 tax / $60 meal = 0.25 = 25%

The trick here is that in the beginning, the savings is based on the $75 meal, while the tax is based on a $60 meal, so the percentages are not the same.

if i had 8.3% female viewers, 91.2% male viewers, and 0.5% user-specified viewers how many female viewers would i have in numbers (without percent)

Answers

Answer:

there is no way to answer that

Step-by-step explanation:

if anyone gives you a number answer they are lying to you. we need to know how. many people in total viewed it to know the specific number. like if a total of a hundered people viewed it then 8 of them where female and 91 of them were male and 1 was user spevified. get what i am saying?

Monique made several batches of soup for a potluck supper. Each batch required Three-fourths of a pound of potatoes, and she used a total of 6 and one-half pounds of potatoes. How many batches of soup did Monique make?

Which division and multiplication problems could represent this scenario? Check all the apply.
Three-fourths divided by StartFraction 13 over 2 EndFraction
StartFraction 13 over 2 EndFraction divided by three-fourths
Three-fourths (StartFraction 13 over 2 EndFraction)
StartFraction 13 over 2 EndFraction (three-fourths)
StartFraction 13 over 2 EndFraction (four-thirds)

Answers

Answer:Answer: B,E or 2nd answer and last

Step-by-step explanation: i did this test two week ago and made 100 own it good look to you

Step-by-step explanation:

Answer:

yo

Step-by-step explanation:

its B and E on edge

or

StartFraction 13 over 2 EndFraction divided by three-fourths

StartFraction 13 over 2 EndFraction (four-thirds)

what are the mean and standard deviation of the sampling distribution of the sample mean for samples of size 4 ?

Answers

On solving the provided question, we can say that standard deviation 15.4 is the mean of the sample means' sampling distribution.

What is standard deviation?

Standard deviation is a statistic that expresses the variability or variance of a group of numbers. While a high standard deviation suggests that the values are more dispersed, a low standard deviation suggests that the values tend to be closer to the established mean. A measure of how dispersed the data are from the mean is the standard deviation (or ). When the standard deviation is low, the data tend to be grouped around the mean, and when it is large, the data are more dispersed. The average variability of the data set is measured as standard deviation. It reveals the average deviation of each score from the mean.

If the population is normal to begin with then the sample mean also has a normal distribution, regardless of the sample size:

u = 15.4;

⊕ = 5.6

now

μ = 5.6[tex]\sqrt{5}[/tex] =

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Find the ratio, n, between the length of side DE and length of the corresponding side AB.

Answers

ratio between side length AB and side length DE = 1

What is point coordinate?

In a coordinate plane location of a particular point is represented by the

pair of two numerical terms that is bounded by a parenthesis. That is called coordinate pair.

What is the ratio, n between the length of side DE and length of the corresponding side AB?

From the triangle ABC and triangle DEF that plotted in the XY coordinate plane, we measured from the point coordinate that side length AB = side length DE

side length DF = side length BC

side length EF = side length AC

we also observed that the three corresponding angles of ABC is equal to the corresponding angles of DEF.

The above statement is true for congruence theorem.

hence the above two triangles are congruent.

from the graph, we find point coordinate A (1,1), B(4, 1), D (-1, 1) and E (-4, 1)

length formula = √(x₂ - x₁) ² + (y₂- y₁) ²

length of AB = √(4-1) ²+ (1-1)² = 3

length of DE = √( -4+1) ²+ (1-1) ² = 3

ratio, n = length AB/ length DE = 3/3 =1

n= 1

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Carly's age is 3 more than twice her sister's age, s. Which of the following expressions represents Carly's age? 2s + 3 3s + 2 2(s + 3) s2 + 3

Answers

Answer:

c = 2s + 3

Step-by-step explanation:

Let c be Carly's age.

Carly is 3 more . . . than twice her sister's age.

We can translate "twice her sister's age" into 2s.

Carly is 3 more than 2s.

We can translate this into:

Carly is 3 + 2s.

c = 2s + 3

The smallest division on main scale of a vernier caplliers is vernier divisions coincide with main scale divisions. While measuring the length of a line, the zero mark of the vernier scale lies between and the third division of vernier scale coincides with a main scale division. (a) Determine the least count of the callopers. (b) Find the length of the line.

Answers

The least count of Vernier calipers is 0.01cm and The length of the line is 10.23cm

Mean scale division:

The main scale is graduated with one division value equal to 1 mm. The length of the Vernier scale is the same as the n- scale of the Vernier scale and the (n-1) scale of the main scale.

Vernier Scale Division:

The minimum Vernier caliper number is also called the Vernier constant. Defined as the difference between the major and Vernier scales is represented mathematically as:

          VC = 1 MSD – 1 VSD

If the Vernier scale has n divisions, it matches the (n-1) divisions of the main scale. Vernier Caliper :

LC = ( 1 - [tex]\frac{n-1}{n}[/tex])  MSD

According to the problem

1MSD= 1mm

MSR = 10.2cm

Here, 10VSD  = 9MSD

          1VSD   = (9/10)MSD

                      =(9/10)×1mm

                      = (9/10)mm

Least count of Vernier calipers L.C = 1MSD - 1VSD

                                                           =1mm - (9/10)mm

                                                           =0.01mm

Therefore, Least Count (LC) = 0.01cm

Therefore,

Length of the line = MSR + (VSD × L.C)

                             = 10.2 + (3 × 0.01)

                             = 10.2+(0.03)p

                             = 10.23 cm

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If during her first three months at

college a student's long distance

phone bills are $119. 68, $84. 36,

and $68. 49, and her local phone

bill is $21. 00 per month, what is her

total average monthly phone bill?

Please help

Answers

Her entire monthly phone bill is $153.37, which includes long distance calls of $119.68, $84.36, and $68.49, as well as local calls of $21.00.

How to solve this equation?

To figure out the student's total average monthly phone expense, combine her long distance phone bills ($119.68 + $84.36 + $68.49) and her local phone bill ($21.00), then divide the total by three (the number of months). The sum of the three long distance phone bills is $272.53, which is added to the $21.00 local phone charge for a total of $293.53. By dividing this sum by three, we get a monthly phone charge of $153.37. In summary, the student's total average monthly phone bill is $153.37, which includes long distance calls of $119.68, $84.36, and $68.49, as well as local calls of $21.00.

Here,

Long distance phone bills total:

$119.68 + $84.36 + $68.49

= $272.53

Local phone bill: $21.00

Total: $272.53 + $21.00

= $293.53

Average monthly phone bill:

$293.53 / 3

= $153.37

Her entire monthly phone cost is $153.37, which includes $119.68, $84.36, and $68.49 for long distance calls and $21.00 for local calls.

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find thee dimensiions of aa 12 oz can of soda thaat can be cconstruccted wiith the least amount of metal

Answers

The can is a cylinder with the smallest height and a radius that is the square root of the volume divided by 2[tex]\pi[/tex].

What is the volume of a cylinder?

The formula to calculate the volume of a cylinder is given by the product of the base area and its height. The volume of a cylinder = πr2h cubic units.

To find the dimensions of a 12-oz can that can be constructed with the least amount of metal, we need to minimize the surface area of the can while maintaining a volume of [tex]355 cm^3[/tex]. The surface area of a cylindrical can is given by [tex]2\pi r(r+h)[/tex] where r is the radius of the base of the can and h is the height of the can.

Minimizing the surface area of the can is equivalent to minimizing the total material used in constructing the can. This can be achieved by making the height of the can as small as possible while maintaining a volume of 355 cm^3. The volume of a cylindrical can is given by πr^2h,

So the equation is:

[tex]\pi r^2h= 355cm^3[/tex]

We can get the value of h in terms of r by dividing both sides by πr^2

[tex]h= 355cm^3 / (\pi r^2)[/tex]

Now we can substitute this value of h in the equation for the surface area:

[tex]2\pi r(r+h) = 2\pi r(r + 355cm^3 / (\pi r^2))[/tex]

Now we can differentiate the above equation with respect to r and set it equal to zero to find the minimum value of the surface area.

[tex]d(2\pi r(r+h))/dr = 2\pi r + 2\pi (355cm^3 / (\pi r^2)) = 0\\r = sqrt(355cm^3 / (2\pi ))[/tex]

Now we can substitute this value of r back into the equation for the volume of the can to find the corresponding value of h:

[tex]\pi r^2h = 355cm^3[/tex]

h = [tex]355cm^3 / (\pi r^2) = 355cm^3 / (\pi (355cm^3 / (2\pi ))^2)[/tex]

The dimensions of the 12-oz can that can be constructed with the least amount of metal are a radius of sqrt(355cm^3 / (2π)) and a height of 355cm^3 / (π (355cm^3 / (2π))^2).

Hence, the can is a cylinder with the smallest height and a radius that is the square root of the volume divided by 2π.

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Complete question: A soda can is to hold 12 fluid ounces. Find the dimensions that will minimize the amount of material used in its construction, assuming the thickness of the material is uniform?

What is the system of inequalities associated with the following graph?

A. x + y >2
2x - y < 1

B. x + y < 2
2x - y > 1

C. x + y > 2
2x - y > 1

D. x + y < 2
2x - y < 1

Answers

Answer:

This leads to C:  x + y > 2 and 2x - y > 1

Step-by-step explanation:

All of the answer options have the same structure, with the exception of the < and > signs.  We can assume the the two lines on the graph conform to the line defined by:

x + y =2, and

2x - y = 1

See the attached graph.  The lines y = -x+2 and y = 2x-1 match the provided graph.

But the equations are all inequalities.  So the darker areas represent the possibilities of values for x and y.  The darkeest area is where the solutions for both equations overlap, so look for equations that would satisfy that situation.  As shown, the equations are:

     y<2x-1, and

     y>-x+2

Rearrange these to match the options:

y-2x < -1, and

y + x > 2

---

Note that y-2x < -1 is the same as 2x-y > 1

This leads to C:  x + y > 2 and 2x - y > 1

     

find the slope 1. (3,4) and (-1,,2)
2. (-2,0) and (5,-3)
3. (4,-5) and (4,2)
4. (-1,3) and (5,3)
note show your solution:

Answers

Answer:

Step-by-step explanation:

1. To find the slope between the two points (3,4) and (-1,2), we can use the slope-intercept form of a line, y = mx + b. The slope (m) is equal to the rise (change in y) over the run (change in x), or (y2-y1)/(x2-x1). In this case, the rise is (2-4) = -2 and the run is (-1-3) = -4, so the slope is (-2)/(-4) = 1/2.

2. To find the slope between the two points (-2,0) and (5,-3), we can use the same formula, (y2-y1)/(x2-x1). The rise is (-3-0) = -3 and the run is (5-(-2)) = 7, so the slope is (-3)/7 = -3/7

3. To find the slope between the two points (4,-5) and (4,2), we can use the same formula, (y2-y1)/(x2-x1). The rise is (2- (-5)) = 7 and the run is (4-4) = 0, so the slope is 7/0 which is undefined.

4. To find the slope between the two points (-1,3) and (5,3), we can use the same formula, (y2-y1)/(x2-x1). The rise is (3-3) = 0 and the run is (5-(-1)) = 6, so the slope is 0/6 = 0.

The dotplots below show an approximation to the sampling distribution for three different estimators of the same population parameter.If the actual value of the population parameter is 5, which dotplot displays the estimator with both low bias and high variability?Choose 1 answer:A. Statistic AB. Statistic BC. Statistic C

Answers

Statistic C has the highest variability compared to the other two dotplots, meaning it has a greater range of expected value. This indicates that it has both low bias and high variability, since the actual value of the population parameter is 5.

Statistic C has the highest variability among the three dotplots, indicating that it has the highest range of values. This suggests that it has both low bias and high variability, since the actual value of the population parameter is 5. This means that it is likely to provide the most accurate estimation of the population parameter. On the other hand, Statistic A and B have much lower variability, meaning that their range of values is more restricted. This suggests that they are more likely to be biased, as they are not as likely to accurately represent the actual value of the population parameter. The low variability of these two dotplots also suggests that they are less reliable than Statistic C.

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Answer:

statistic A

Step-by-step explanation:


Round 21245 to the nearest thousand

Answers

Answer:

21245 rounded to the nearest thousand is 21000.

Rounding to the nearest thousand means finding the number that is closest to the original number, but ends in three zeroes. In this case 21000 is the nearest number ending in three zeroes to 21245.

Answer:

21000

Step-by-step explanation:

If the hundreds place is 500 or bigger, round to 22000, if the number is 499 or under it will be 21000.

If the temperature outside is 36 °C, what is the temperature in °F?

Answers

Answer: I believe 96.8 degrees F

Step-by-step explanation:

36°C  x 9 ÷ 5 + 32= 96.8

Solve the equation. 4x - 6 = 2x + 8 x = _____

Answers

Answer:

x=-1

Step-by-step explanation:

4x-6=2x+8x; 4x-6=10x; -6=6x; x=-1.

Answer:

x=-1

Step-by-step explanation:

4x-6=2x+8x=

4x-6=10x

-6=10x-4x

-6=6x

x=6/-6

x=-1

What is the solution for the equation?

a + StartFraction 8 over 3 EndFraction = two-thirds

Answers

The solution to the algebraic equation (a + 8/3) = 2/3 is given by a = -2

How to solve fractional equation?

(a + 8/3) = 2/3

open parenthesis

a + 8/3 = 2/3

collect like terms

a = 2/3 - 8/3

a = (2-8) / 3

a = -6/3

a = - 2

Check:

(a + 8/3) = 2/3

-2 + 8/3 = 2/3

(-6+8) / 3 = 2/3

2/3 = 2/3

In conclusion, -2 is the solution to the unknown in the equation (a + 8/3) = 2/3

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A multiple-choice quiz contains 5 questions. Each question has answer choices labeled a, b, c, and d.
How many different ways can a student answer the five questions?

Answers

A multiple-choice quiz contains 5 questions. Each question has answer choices labeled a, b, c, and d. There are 256 different ways can a student answer the five questions.

Permutation and Combination:

Permutations and combinations form counting principles, which are applied in many different situations. A permutation is the number of different arrangements that can be made from a given set. When it comes to permutations, the details matter because the order or order matters. The three country names are spelled differently: {US, Brazil, Australia} or {Australia, US, Brazil) or {Brazil, Australia, US}, and the order in which the country names appear is important. In combination, the names of the three countries are just one group, and the order or sequence does not matter.

When asked how many ways an object can be combined, dispersed, mixed or split, in this case the answer is to use the counting method to calculate the number of ways.

In this case, DDDD can be answered from AAAA, AAAB, AAAC, AAAD, AABA, AABB, ..., CADB. To calculate that number, we have to consider that for every possible answer to one question, there are four alternatives to the other question. So for the 4 choices for question 1, there are 4 choices for question 2, and for each question 3, and so on.

Therefore, the answer is 4*4*4*4 = 256 questions.

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What is the x-intercept of the line graphed above? What is the y-intercept of the line? What is the slope of the line? Write an equation for the line.

Answers

Answer:

a) (-2,0) is the x-intercept of the line.

b) (0,4) is the y-intercept of the line.

c) "2" is the slope of the line.

d) 2x + 4 = y (Equation of the Line)

Step-by-step explanation:

All linear equations have a general form: mx+n.

When we figure out two points on the line, we can use them in this general formula and find out the equation for the line.

We can use x and y intercepts of the line for that, they are also asked to find.

The x-intercept of the line is (-2,0) because this is where the line crosses the x axis, this point is named as x-intercept.

Except the axis, y-intercept has no more difference than x-intercept. So, the y-intercept of a line is where the line crosses the y axis.

We can see that the line crosses y axis at (0,4).

Now, we know two specific points on the line. This means that we can find the slope and write the equation for this line.

We can find the slope using the formula below:

y1 - y0 / x1 - x0 = Slope

This would give us the slope for the line, no matter which point you take as (x1, y1). The order is not important.

If you use the given points on the formula above, you would get "2" as the slope of the line.

In the general form of a linear equation, the coefficient of "x" is equal to the slope of the line. This means that "m" is equal to "2". (y = 2x + n)

Finally, you can use one of the known points to find out the real equation for the line.

Let's use (0,4):

2x + n = y (Use 0 for "x" and 4 for "y" variable.)

We can conclude that "n" is equal to 4.

So, the equation of this line is equal to "2x + 4 = y".

if 1,000,000 people are exposed to 10 msv, then what is the expected number of radiation induced cancers according to the linear no threshold model of cancer induction

Answers

The expected number of radiation induced cancers according to the linear no threshold model of cancer induction is 500

Radiation is defined as the energy that comes from a source and travels through space at the speed of light.

Here we have given that 1,000,000 people are exposed to 10 msv and here we need to find the  the expected number of radiation induced cancers according to the linear no threshold model of cancer induction.

As we all know that the amount of dose depends on the type of x-ray examination. A CT examination with an effective dose of 10 milli Sieverts

And it may be associated with an increase in the possibility of fatal cancer of approximately 1 chance in 2000.

therefore, here we have the total number as 1,000,000

Then the expected number if calculated as,

=> 1,000,000/2000

=> 500

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four girls take turns flipping a fair coin until a head appears. what is the probability that the first girl is the first to flip a head

Answers

the probability of "heads" on the first flip of this coin will be 1/2.

What is probability and example?

Probability = the number of ways of achieving success. the total number of possible outcomes. For example, the probability of flipping a coin and it being heads is ½, because there is 1 way of getting a head and the total number of possible outcomes is 2 (a head or tail). We write P(heads) = ½ .

The chances of an event occurring are defined by probability. Probability has several uses in games, in business to create probability-based forecasts,

"Heads" is the result of the latest flip and the preceding four flips. The total sample space for the heads.

P(A^B)=(1/2)^5

The preceding four flips in a row all resulted in "heads."

P(B)=(1/2)^4

The probability that the 5th flip lands head is;

⇒P(A^B)/p(B)= (1/2)⁵/(1/2)⁴

⇒P(A^B)/p(B)= 1/2

Hence, the probability of "heads" on the next (5th) flip of this coin will be 1/2.

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Which congruence theorem can be used to prove △WXZ ≅ △YZX?
Triangles W X Z and Y Z X share side X Z. Angles W X Z and X Z Y are right angles. Angles X W Z and X Y Z are congruent.
AAS ASA SAS HL

Answers

Therefore, the congruence theorem that may be employed to demonstrate that △WXZ and △YZX are equivalent is: AAS

Define congruence.

Angles are considered congruent if the ratios of two shapes are equal. Similar to this, if the sides with one form are the same length and match the sides of yet another figure, the sides are congruent.

Here,

We are informed that ΔWXZ and ΔYZX share the same side.

The right angles ∠WXZ and ∠XZY are.

It is consistent for ∠XWZ and ∠XYZ.

Now that the parameters have been provided, we may infer that XZ is equal to itself according to the reflexive property for congruence, and as a result, we have a congruent side in each triangle.

Second, because ∠WXZ and ∠XZY were right angles, they are comparable and hence congruent to one another.

Finally, it is stated that ∠XWZ and ∠XYZ are congruent.

In conclusion, the triangles are identical according to the AAS Congruency since there are two corresponding angles one and corresponding sides that are both equal, but the comparable side wasn't with the included angles.

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factorize fully 2(x-y)² - x+y​

Answers

Answer: (2x-2y-1)(x-y)

Step-by-step explanation:

To factor 2(x-y)² - x+y, we first recognize that the expression is a difference of squares, which means it can be factored into the form (a-b)(a+b). To identify the values of a and b, we can look for common factors between the two terms, which are 2(x-y)² and -x+y.

The common factor between 2(x-y)² and -x+y is x-y. We can factor it out by dividing both terms by x-y:

2(x-y)² - x+y = (x-y) * (2(x-y) - 1)

Now we can write the expression as (x-y)(2x-2y-1) .

As you can see (x-y) is common in both the term, so we can factor it out, and we are left with (2x-2y-1)(x-y)

rearrange to make x the subject

Answers

The value of x given the equation 2x - 5y = p is x = (p + 5y) / 2.

What does it mean when something is made the subject?

Making x the subject of an equation or formula entails rearranging the equation or formula so that the x variable is equal to the other variables.

The necessary steps include:

Isolate the variableRearrange the equation so each term containing x is on the same side of the =.Factorization may be needed if there are multiple terms containing x.Perform an operation to ensure only a single x variable is left as the subject

2x - 5y = p

2x = p + 5y

Divide through by 2

x = (p + 5y) / 2

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Complete question

rearrange to make x the subject in 2x - 5y = p

Find the equation of the surface obtained by rotating the parabola y=x^2 about y-axis. What type of quadric surface is this?

Answers

On solving the provided question, we can say that this is from integral type of quadric surface [tex]SA = (\pi / 6) * 26 = > SA = (13 * \pi) / 3[/tex]

what is integral?

In mathematics, integrals translate integers into functions that express concepts like displacement, area, and volume that result from the combination of little facts. Integral discovery is a process that is referred to as integration.

We concentrate on the x distance from the y-axis since the rotation is about the y-axis.

function for x, which is

x = + or - sqrt(y)

x = sqrt(y)

This is function is g(y) = sqrt(y)

g(y) about the y-axis on the closed interval [c, d], that is, y is an element of [c, d] is

Surface Area(SA) = 2 * pi * integral from c to d of ( g(y) * sqrt(1 +(g’(y))^2 ) *dy

The given interval is x=0 to x=sqrt(2), using the given function y = x^2 we obtain y = 0 to y = 2

g(y) = sqrt(y) and g’(y) = 1/(2 * sqrt(y))

SA = 2 * pi * integral from 0 to 2 of sqrt(y) * sqrt(1 +(1/(2*sqrt(y)))^2) * dy

SA = 2 * pi * integral from 0 to 2 of sqrt(y *(1 +(1/(4*y)) * dy

SA = 2 * pi * integral from 0 to 2 of sqrt(y +(1/4) * dy

Apply u substitution, let u = y +(1/4), then take derivative of u which gives us du = dy. As part of the substitution, we need to change the bounds to 1/4 and 9/4

SA  2 * pi * integral from 1/4 to 9/4 of u^(1/2) du

[tex]f u^(1/2) is 2u^(3/2) / 3[/tex]

[tex]SA = evaluate 2 * \pi * ( 2u^(3/2) / 3 ) from 9/4 to 1/4\\SA = [ 2 * \pi * ( 2 * (9/4)^(3/2) / 3) ] - [ 2 * \pi * ( 2 * (1/4)^(3/2) / 3) ]\\2 * \pi * 2 * (1/3)\\SA =((4 * \pi) / 3) * { [ (9/4)^(3/2) / 3) ] - [ (1/4)^(3/2) / 3) ] }\\ 4^(3/2) = sqrt(64) = 8\\SA = ((4 * \pi) / 3) * [ ( 9^(3/2) -1) / 8 ]\\SA = (\pi / 6) * ( 27 -1)\\SA = (\pi / 6) * 26\\SA = (13 * \pi) / 3\\[/tex]

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a farmer finds that if she plants 95 trees per acre, each tree will yield 80 bushels of fruit. she estimates that for each additional tree planted per acre, the yield of each tree will decrease by 3 bushels. how many trees should she plant per acre to maximize her harvest?

Answers

She  should plant 118 trees per acre to maximize her harvest area. This will yield 96 bushels per tree.

95 trees per acre x 80 bushels per tree = 7600 bushels

96 trees per acre x 77 bushels per tree = 7392 bushels

97 trees per acre x 74 bushels per tree = 7158 bushels

98 trees per acre x 71 bushels per tree = 6938 bushels

99 trees per acre x 68 bushels per tree = 6732 bushels

100 trees per acre x 65 bushels per tree = 6500 bushels

101 trees per acre x 62 bushels per tree = 6262 bushels

102 trees per acre x 59 bushels per tree = 6038 bushels

103 trees per acre x 56 bushels per tree = 5828 bushels

104 trees per acre x 53 bushels per tree = 5532 bushels

105 trees per acre x 50 bushels per tree = 5250 bushels

106 trees per acre x 47 bushels per tree = 4978 bushels

107 trees per acre x 44 bushels per tree = 4716 bushels

108 trees per acre x 41 bushels per tree = 4452 bushels

109 trees per acre x 38 bushels per tree = 4188 bushels

110 trees per acre x 35 bushels per tree = 3925 bushels

111 trees per acre x 32 bushels per tree = 3663 bushels

112 trees per acre x 29 bushels per tree = 3407 bushels

113 trees per acre x 26 bushels per tree = 3151 bushels

114 trees per acre x 23 bushels per tree = 2895 bushels

115 trees per acre x 20 bushels per tree = 2300 bushels

116 trees per acre x 17 bushels per tree = 1972 bushels

117 trees per acre x 14 bushels per tree = 1638 bushels

118 trees per acre x 11 bushels per tree = 1306 bushels

Therefore, 118 trees per acre will yield the highest harvest of 1306 bushels.

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Erin needs 4 5 of a cup of chocolate chips to make a cake and 1 2 of a cup of chocolate chips for the frosting. She's trying to decide if a one cup bag of chocolate chips will be enough for the cake and the frosting. Determine whether Erin needs to buy more chocolate chips.

Answers

Answer:

Yes, she needs to buy more

Step-by-step explanation:

4/5 + 1/2 = 8/10 + 5/10 = 13/10 cups of chocolate needed

13/10 > 10/10

13/10-10/10 = 3/10

she needs 3/10 cup of chocolate more

Consider kite FGHJ. What are the values of a and b? A = 14, b = 6 a = 14, b = 8 a = 17, b = 6 a = 17, b = 8

Answers

The value of a=17 cm and b=6 cm as FGHJ is a kite.

Kite has property their adjacent sides are equal. The top two sides of the kite are equal and the bottom two sides of the kite are equal.

Any quadrilateral with two sets of congruent successive sides is referred to as a kite (in contrast to a parallelogram where the opposite sides are congruent). Connecting points G and J, draw a section. Triangle GHJ and triangle GFJ are congruent. The information that GH = GF and FJ = HJ will be used.

FG=GH because of ∠F=∠H.

30=2a-4

2a=34

a=17 cm      

Similarly, ∠F=∠H

FJ=HJ

3b+6=24

3b=18

b=6 cm

Hence, The value of a=17 cm and b=6 cm

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Answer:

a=17 and b=6

Step-by-step explanation:

took the test

g what are differences or similarities between everyday logic and mathematical logic? how can the study of mathematical logic help you in your everyday life?

Answers

The study of mathematical logic can help you in your everyday life by developing your ability to think logically and critically.

Everyday logic and mathematical logic are similar in that they both involve reasoning and drawing conclusions based on evidence or information. However, mathematical logic is a more formal and precise system of reasoning that is used in mathematics, computer science, and other fields. It involves using symbols and formal languages to represent statements and arguments, and it often involves the use of mathematical proofs to demonstrate the validity of a conclusion.

The study of mathematical logic can help you in your everyday life by developing your ability to think logically and critically. It can also help you understand the foundations of computer science and the way that computers process information. Additionally, it can help you become more comfortable with using formal language and reasoning, which can be useful in fields such as law, philosophy, and science.

Thus, the study of mathematical logic can help you in your everyday life by developing your ability to think logically and critically.

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