Find the midpoint of the line segment joining points A and B
A(8,- 7); B(2,3)

Answer:

I want to say False.

Step-by-step explanation:

I would think that the opposite of 4 would be -4.

Good luck! :)

Answer:

True

Step-by-step explanation:

4 = 4/1 1/4 is the reciprocal or the opposite of 4

Both Tetsuya and Mason are interested in finding the probability that a red marble will be chosen out of the bag. We will decide if either of them is correct.

In statistics, what does a probability mean?

Tetsuya  P( R) = 4/17

Mason  P( R ) = 1 - 4/18

P ( R) = Favorable outcome/ possible outcome

The number of favorable outcomes is the number of red marbles in the bag, so it is equal to 4. The number of possible outcomes is the number of all marbles in the bag. Let's find it.

                     4 + 7 + 5 + 2 = 18

We have enough information to find the probability that a red marble will be chosen P(R).

                              P( R) = 4/18

Tetsuya used the wrong number of possible outcomes in the denominator. Let's look at Mason's solution. They wanted to use the probability of complementary events. However, they found the probability that a selected marble is not red.

                   Mason  P( R ) = 1 - 4/18

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Answer:

y = 11

Step-by-step explanation:

Let's solve your equation step-by-step.

[tex] \rightarrow \sf \: y {}^{2} =121[/tex]

Step 1: Take square root.

[tex] \sf \: y=± \sqrt{121} [/tex]

y=11 or y=−11

The geometric mean between pair of numbers 8√2/3 and 4√2/3 is 2.67

We know that for a sequence of numbers x1, x2,.., xn

The formula of geometric mean is,

[tex]\Pi=\sqrt[n]{x_1.x_2.x_3...x_n}[/tex]

In this question, we have been given two numbers 8√2/3 and 4√2/3

We need to find the geometric mean between pair of numbers, 8√2/3 and 4√2/3.

Using the formula for the geometric mean,

[tex]\Pi=\sqrt[n]{x_1.x_2.x_3...x_n}[/tex]

In this question, we have two numbers.

So, the value of n is 2.

[tex]\Pi=\sqrt{\frac{8\sqrt{2} }{3} \times \frac{4\sqrt{2} }{3}} \\\\\Pi=\sqrt{\frac{32\times 2}{9} } \\\\\Pi=\sqrt{\frac{64}{9} } \\\\\Pi=\frac{8}{3}\\\\\Pi=2.67[/tex]

Therefore, the geometric mean between pair of numbers 8√2/3 and 4√2/3 is 2.67

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Applying the exterior angle of a triangle theorem, m∠G = 40°.

According to the exterior angle theorem of a triangle, we have the following equation that is derived:

11x - 4 + 55 = 23x + 3

11x + 51 = 23x + 3

11x - 23x = -51 + 3

-12x = -48

-12x/-12 = -48/-12

x = 4

m∠G = 11x - 4 = 11(4) - 4

m∠G = 40°

Thus, applying the exterior angle of a triangle theorem, m∠G = 40°.

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If this rate of change continues, the attendance for the year 2012 will be 468973.

Slope(m) for given two points (x₁,y₁) and (x₂,y₂)  is calculated using the formula

m=(y₂-y₁)/(x₂-x₁)

in the given question ,we will take year as x coordinate and the attendance as y coordinate.

Given " The attendance in 2001 was 450,746" , So

The point becomes (2001,450746)

and "the attendance in 2005 was 457,373" So

the point becomes (2005,457373)

Now as we have the two points , slope can be calculated as

m=(457373-450746)/(2005-2001)

m=6627/4

m≅1657

Hence the rate of change is 1657 persons per year

It is given in the question that rate of change remains constant.

To predict the attendance for the year 2012.

Let the attendance for the year 2012 be x.

we have (2001,450746) and (2012,x)

let m=1657, x₁=2001 , y₁=450746 , x₂=2012 , y₂=x

m=(y₂-y₁)/(x₂-x₁)

Substituting the values we get  

[tex]1657=\frac{x-450746}{2012-2001} \\ \\ 1657=\frac{x-450746}{11}[/tex]

By cross multiplying we get

[tex]1657*11=x-450746\\ \\ 18227=x-450746\\ \\ x=450746+18227\\ \\ x=468973[/tex]

Therefore , The attendance for the year 2012 will be 468973.

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The solution to the logarithmic equation is - 10 / 3.

Logarithms are examples of trascendent functions, that is, function that cannot be described in algebraic terms. Herein we must take advantage of logarithm properties to solve for x in the expression given. The complete procedure is shown below:

㏒₃ (3 · x - 2) - ㏒₃ (x + 2) = 2                        Given

㏒₃ [(3 · x - 2) / (x + 2)] = 2                             Logarithm of a division of functions

(3 · x - 2) / (x + 2) = 3²                                    Definitions of power and logarithm

(3 · x - 2) / (x + 2) = 9                                      Definition of power

3 · x - 2 = 9 · (x + 2)                                        Definition of division / Compatibility with multiplication / Existence of the multiplicative inverse / Associative and modulative properties

3 · x - 2 = 9 · x + 18                                         Distributive property

- 20 = 6 · x                                                       Compatibility with addition / Existence of the additive inverse / Associative, commutative and modulative properties

6 · x = - 20                                                       Symmetric property

x = - 20 / 6                                                       Definition of division / Compatibility of multiplication / Existence of the multiplicative inverse / Associative, commutative and modulative properties

x = - 10 / 3                                                        Simplification of fractions / Result

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Answer:

1800

Step-by-step explanation:

hope this works for you :)

Answer:

d

Step-by-step explanation:

Answer:

Step-by-step explanation:

58 + 66(x-1) + 50 = 1428cents

66(x-1) + 108 = 1428

66(x-1) =1320

x-1 = 20

x = 21 mins

The distance between the point  [tex]\frac{4}{5}[/tex] and [tex]\frac{-1}{6}[/tex] is [tex]\frac{9}{10}[/tex] or 0.9.

Given point are [tex]\frac{4}{5}[/tex] and [tex]\frac{-1}{6}[/tex]

In decimal form,

[tex]\frac{4}{5}=0.8[/tex]

[tex]\frac{-1}{6} =-0.1[/tex]

Plot that two point on a number line.

Number line means a straight line with numbers arranged at equal segments or intervals throughout its length is known as a number line. A number line is often shown horizontally and can be extended indefinitely in any direction.

In the figure we can see the number plotting.

The points between those points is the distance between the  [tex]0.8[/tex] and [tex]-0.1[/tex].

Therefore, the distance between the point  [tex]\frac{4}{5}[/tex] and [tex]\frac{-1}{6}[/tex] is [tex]\frac{9}{10}[/tex] or 0.9.

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the function f(x) is invertible on the intervals:

B: -7 ≤ x ≤ -4

C : 1 ≤ x ≤ 3

A function f(x) can only be invertible if it is one-to-one in its domain, where one-to-one means that each output is related to only one input.

So, if for two different values x₁ and x₂ we have that:

f(x₁) = f(x₂) = y, then the function is not invertible.

So here what we need to do is identify in which interval is the function one-to-one.

If you look at the last option, we have the interval [1, 3]

We have that f(1) = 2, and then the function increases until f(3) = 4

In that interval the function is cleraly one-to-one, so, on that interval, we can find an inverse function to f(x).

Similarly, on the second option [-7, -4] we also can see that:

f(-7) =  2

And then the function increases until f(-4) = 4

Then the function is also invertible on that interval.

We conclude that the function f(x) is invertible on the intervals:

B: -7 ≤ x ≤ -4

C : 1 ≤ x ≤ 3

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Answer:-3<x<-1 is incorrect, all else are correct.

Step-by-step explanation:

Answer:

10%

The increase of her score would be 7 so 7 over 70 which would = to .10 and .10 as a percent is 10%.

Answer:

Ratio of homework papers to exit tickets

Mr. Rowley: 8/7

Ms. Rivera: 16/15

These ratios are not equal

8/7 > 16/15

Step-by-step explanation:

Ratio of homework papers to exit tickets

Mr. Rowley: 16:14

Expressed as a fraction this is
[tex]\dfrac{16}{14}[/tex]

Let's simplify the fraction by dividing numerator and denominator by 2. This is essentially dividing by 1 since 2/2 =1 so the fractional value itself is unchanged.

[tex]\dfrac{16 \div 2}{14 \div 2} = \dfrac{8}{7}[/tex]

Ms. Rivera: 64:60
Expressed as fraction this is
[tex]\dfrac{64}{60}[/tex]

Let's simplify the fraction by dividing numerator and denominator by 2
[tex]\dfrac{64 \div 2}{60 \div 2} = \dfrac{32}{30}[/tex]

This can be simplified further by dividing again by 2:
[tex]\dfrac{32 \div 2}{30 \div 2} = \dfrac{16}{15}[/tex]

(We could have divided by 4 the first time also)

[tex]\dfrac{8}{7}[/tex] [tex]\mathrm {\;is\;\bold{not\; equal\;} to\; }[/tex] [tex]\dfrac{16}{15}[/tex]

We can see that if we multiply both fractions by 105 which is the product of the denominators

[tex]\dfrac{8}{7} \times 105 = 8 \times 15 = 120 \rm \;\;\;\;{ (since 105 \div 7 = 15)}\\\\\dfrac{16}{15} \times 105 = 16 \times 7 = 112 \rm \;\;\;\;{ (since 105 \div 15 = 7)}\\\\\\[/tex]

Since we are multiplying both fractions by the same amount to get rid of the denominator it is easy to see which one is bigger

Obviously 8/7 is bigger than 16/15

We could have converted to decimal also and checked
8/7 =     1.14 rounded to 2 decimal places
16/15 =  1.07 rounded to 2 decimal places

1.14 > 1.07 so 8/7 > 16/15

(You can choose which of the above methods you like)

Answer:

x<-3

see the number line attached

make sure the number line has an open circle at -3

Hello,

[tex] - 9x + 9 > 36[/tex]

[tex] - 9x > 36 - 9[/tex]

[tex] - 9x > 27[/tex]

[tex]x < \frac{27}{ - 9 \:} \: \: because \: - 9 < 0[/tex]

[tex]x < - 3[/tex]

Answer: Area, S = 36 [tex]cm^{2}[/tex]

Step-by-step explanation:

What is the Area of a Triangle?

The area of a triangle is defined as the total region that is enclosed by the three sides of any particular triangle. Basically, it is equal to half of the base times height, i.e.

                               A = 1/2 × b × h.

Given data,

Area of shaded triangle S = 1/2 *b*h

We can write,

                    Area = S

                     Base = b

                     Height = h

we get,

                Base b = 6cm

                Height h = 12cm

h=12 cm  height of isosceles triangle ,

           Area = 1/2 * b*h

We can substitute b and h values,        

            Area= 1/2* 6 * 12

                    = 1/2 * 72

                    = 36

So, Area, S = 36 [tex]cm^{2}[/tex]

Therefore,

                          Area, S = 36 [tex]cm^{2}[/tex]

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The local grocery store mixed 13 oz of planters mixed nuts with 19.5 oz of emerald mixed nuts to get 32.5 oz bags of mixed nuts that contain 56% peanuts.

An equation is an expression that shows the relationship between two or more numbers and variables.

Let x represent the amount of planters mixed nuts and y represent the amount of emerald mixed nuts, hence:

x + y = 32.5   (1)

Also:

0.5x + 0.6y = 0.56(32.5)       (2)

From both equations:

x = 13, y = 19.5

The local grocery store mixed 13 oz of planters mixed nuts with 19.5 oz of emerald mixed nuts to get 32.5 oz bags of mixed nuts that contain 56% peanuts.

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The 32th term of the arithmetic sequence AP is found to be -146.

An arithmetic progression (AP) is a succession in which each successive term has the same distinctions.

Now, to answer the question;

The given sequence of the numbers is-

9,4,-1,-6,-11, ...........

There are total 32 terms in the series for which we have to find 32nd number.

Let the first term be 'a₁' = 9.

Let the second term be 'a₂' = 4

Let the third term be 'a₃' = -1.

The common difference of between the two consecutive terms is equal of an AP is 'd'.

d = a₂ - a₁  

Substitute the values in the above equation;

d = 4 - 9

d = -5

Now, the 32th term is calculated by the nth term formula;

Now, substitute all the value in the formula,

a₃₂ = a + (n - 1) d

a₃₂ = 9 + (32 - 1)(-5)

a₃₂ = 9 - 160 + 5

a₃₂ = -146.

Therefore, the 32nd term of the arithmetic sequence is estimated as -146.

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Answer:

Q= ( -4 -9)

Step-by-step explanation:

Using the midpoint formula

X1 + X2 Y1 + Y1

----------, ---------

2. 2

The midpoint QR = (2, -5) and R = (-8, 1) Q =>(x, y)

= x + 8. y - 1

------------ = 2 and -------- = -5

2 2

=> (4 = x + 8) and( -10= y-1)

=> 4 -8 = x and -10+1= y

Q(x, y) = (-4, -9)

We have proved that the West Texas Triangle formed is an isosceles triangle.

The approximate coordinates of three locations is given.

We have to prove that the West Texas Triangle is an isosceles triangle.

What is a triangle ?

A triangle is a 3-sided shape. There are three sides and three angles in every triangle, some of which may be the same.

As per the question ;

The West Texas Triangle is an isosceles triangle.

1st location has coordinates (31.9°N , 102.3°W)

2nd location has coordinates (32.7°N , 99.3°W)

3rd location has coordinates (31.4°N , 100.5°W)

Let's represent 1st location as A , 2nd location as B and 3rd as C.

Let's check it.

Using the distance formula ;

AB = √ [ (32.7 - 31.9) ² + (102.3 - 99.3)²]

AB = √ (0.8² + 3²)

AB = √9.64

AB = 3.10

Similarly ;

BC = √ (1.3² + 1.2²)

BC = √3.13

BC = 1.8

And

AC = √(0.5² + 1.8²)

AC = 1.8

The two sides are of equal length , so , we can conclude that this is an isosceles triangle.

Thus , the West Texas Triangle formed is an isosceles triangle.

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The initial amount and rate of change given a table for a linear function are $65 and $86, respectively

The table of linear function represents the given parameter

On the table, we have the following points

(x, y) = (6, 476) and (10, 736)

The rate of change is calculated as

Rate = (y2 - y1)/(x2 - x1)

So, we have

Rate = (736 - 476)/(10 - 6)

Evaluate

Rate = 65

This means that the rate of change is $65

The initial amount is calculated as

y = m(x - x1) + y1

Where

m = 65

So, we have

y = 65(x - x1) + y1

Using one of the points, we have

y = 65(x - 6) + 476

Set x = 0

So, we have

y = 65(0 - 6) + 476

Evaluate

y = 86

Hence, the initial amount and rate of change given a table for a linear function are $65 and $86, respectively

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                         Expression                               Property used

Step 1   1 x 3/2 x (-5) x 3 x (-4)        Inverse Property of Multiplication

Step 2  1 x (-4) x 3/2 x (-5) x 3        Associative Property of Multiplication

Step 3  1 x [ (-4) x 3/2 ] x (-5) x 3  Commutative Property of Multiplication

Step 4  1 x [-6] x (-5) x 3                Identity Property of Multiplication

Step 5  -6 x (-5) x 3

The inverse property of multiplication refers to multiplying a number with it's reciprocal. This is applied while transforming from division to multiplication as division is the inverse of multiplication.

Associative property of multiplication is applied while multiplying several values, Hence rearranging the terms will still give same answer.

This property has it that the order of the multiplication do not matter, hence multiplication can start with any order.

This property refers to multiplication of a value with one, such multiplication usually return same value as the product.

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Answer:

The answer is 6.

Step-by-step explanation:

Simply by calculation.

Answer:

the answer is -3

Step-by-step explanation:

I took the quiz on k12

Answer:

Use This it will help

Step-by-step explanation:

The first five terms of each sequence is  20 , 22, 24, 26 ,28.

What is a term:

In algebra, an algebraic expression is formed by a term or a group of terms together. Term in math is defined as the values on which mathematical operations occur in an algebraic expression.

Now , the mathematical expression.

a1 =20 an =an−1​ +2,n>1

putting n=2 a2 =a2−1+2 =a1+2 =20+2=22

h=3 a3 =a3−1 +2 =a2+2 =22+2=24

x=4 a4 =a4−1+2 =a3 +2 =24+2=26

n=5 a5​ =a5−1​ +2 =a4+2 26+2=28

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The slope of the given equation of line is [tex]\frac{A}{B}[/tex] and the y-intercept is [tex]\frac{-C}{B}[/tex]

Given: -Ax + By = -C

=> y = [tex]\frac{A}{B}x+ \frac{-C}{B}[/tex]

As we know that the slope-intercept form of an equation of a line is given by: y = mx + c, where:

On comparing the given equation of the line with this form, we get:

m = [tex]\frac{A}{B}[/tex] and c = [tex]\frac{-C}{B}[/tex]

Hence, The slope of the given equation of line is [tex]\frac{A}{B}[/tex] and the y-intercept is [tex]\frac{-C}{B}[/tex].

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Step-by-step explanation:

slope=m=-4

equation-y=mx+c

equation-y=-4x+c

input y and x to find c

x=-1

y=-1

-1=-4(-1)+c

-5=c

therefore equation is

y=-4x-5