When given a circle with a radius of 4, how do you find the following? explain why.

a. Diameter

b. Circumference

Answer: 50

Step-by-step explanation:

You can plug in 4 for any of the equations given.

y = 10 + 10(4)

y = 10 + 40

y = 50

OR

y = 30 + 5(4)

y = 30 + 20

y = 50

Answer:

y = 50

Step-by-step explanation:

Since x = 4, plug the value into either equation.

[tex]y =10+10x\\y = 10 + 10(4)\\y=10+40\\y=50[/tex]

Therefore, y equals 50.

The first lefty is the fifth person chosen is7.45%

There are some lefties among the 5 people is, 50.16%

The first lefty is the fifth person chosen is

[tex](.87)^4(.13)=.07447=7.45 \%[/tex]

There are some lefties among the 5 people is,

[tex]$$1-(.87)^5=.50157=50.16 \%$$[/tex]

The first lefty is the second or third person.

[tex]$(.87)(.13)+(.87)^2(.13)=.211497=21.15 \%_0$[/tex]

There are exactly 3 lefties in the group.

[tex]$(5, .13,3)=.0166=1.66 \%$[/tex]

There are at least 3 lefties in the group,

[tex]1 \text { - binomadf }(5, .13,2)=.0179=1.79 \%[/tex]

There are no more than 3 lefties in the group

[tex]\text { binomcdf }(5, .13,3)=.9987=99.87 \%[/tex]

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Relative to the mean, there are some school districts where many students are using ipads.

What is called the mean?

The sum of all values divided by the total number of values determines the mean (also known as the arithmetic mean, which differs from the geometric mean) of a dataset. It is sometimes referred to as the "average" and is the most widely used central tendency metric.

Simply dividing the total number of values in a data set by the sum of all of the values yields it. The calculation can be performed on unprocessed data or data that has been combined into a frequency table.

By dividing the sum of the given numbers by the entire number of numbers, the mean—the average of the given numbers—is determined.

Mean: The "average" number; found by adding all data points and dividing by the number of data points. Example: The mean of 4, 1, and 7 is ( 4 + 1 + 7 ) / 3 = 12 / 3 = 4 (4+1+7)/3 = 12/3 = 4 (4+1+7)/3=12/3=4left parenthesis, 4, plus, 1, plus, 7, right parenthesis, slash, 3, equals, 12, slash, 3, equals, 4.

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The inverse demand function is P = 2400 + 5Q

Given that

Q = 480 - 0.2P

We simply make P the subject of the formula

So, we have

0.2P = 480 - Q

Divide by 0.2

P = 2400 + 5Q

To find the marginal revenue function, we can use the inverse demand function P = 2400 + 5Q, and take the derivative of this function with respect to Q.

The derivative of P with respect to Q is dP/dQ = 5. This represents the change in price for a one unit change in the quantity of operations performed.

So the Marginal Revenue function is MR = dP/dQ * Q = 5Q

To maximize profit, the doctor should equate marginal revenue to marginal cost, which is

MC = dAVC/dQ

So, we have

MC = d(2Q² - 15Q + 400)/dQ

Evaluate

MC = 4Q - 15.

So, we have

5Q = 4Q - 15

Q = -15

Take the absolute value

Q = 15

So, the number of operations is 15

We have

P = 2400 + 5Q

This gives

P = 2400 + 5 * 15

Evaluate

P = 2475

To find the profit, we need to subtract the total cost from the total revenue.

The total revenue is found by multiplying the price by the quantity of operations performed: TR = P * Q = 2475 * 15 = 37125

The total variable cost is found by multiplying the average variable cost by the quantity of operations performed: TVC = AVC * Q = (2Q^2 - 15Q + 400) * Q = 2Q^3 - 15Q^2 + 400Q

The total fixed cost is the fixed cost that doesn't change regardless of the level of output : TFC = $8000

The total cost is the sum of the total variable cost and total fixed cost: TC = TVC + TFC = 2Q^3 - 15Q^2 + 400Q + $8000

The profit is the difference between total revenue and total cost:

π = TR - TC = 37125 - (2Q^3 - 15Q^2 + 400Q + $8000)

When Q = 15,

profit is π = 37125 - (2(15)^3 - 15(15)^2 + 400(15) + $8000)

= 19750

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The expansion of 1/4(x - 12) is x/4 - 3

In order to expand and simplify an expression, we need to multiply out the parentheses and then simplify the resulting expression by collecting the like terms. Expanding brackets (or multiplying out) is the process by which we remove parentheses. It is the reverse process of factorisation.

For example 4(3-y) can be expanded by multiplying the factor 4 by 3 and y = 12- 4y

Similarly the expression 1/4(x - 12) can be expanded by firstly multiply the factor ¼ by x and 12

therefore 1/4(x - 12) = 1/4×x -12×1/4

= x/4 - 3

Therefore the expansion of 1/4(x - 12) is x/4 -3

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Answer:

4w - 20

Step-by-step explanation:

hope this help i guess

The total number of seats in the auditorium is 3500.

What is the arithmetic series?

An arithmetic series is a sequence of numbers in which the difference between any two consecutive terms is always the same. It can also be defined as a sum of a finite number of terms of an arithmetic progression.

The seating capacity of the auditorium can be found by using the formula for the sum of an arithmetic series.

The formula for the sum of an arithmetic series is:

S = n/2 (2a + (n-1)d)

Where:

S is the sum of the series (total number of seats)

n is the number of terms in the series (number of rows of seats)

a is the first term in the series (number of seats in the first row)

d is the common difference between terms in the series (increase in number of seats per row)

In this case,

a = 20 (number of seats in the first row)

d = 25 - 20 = 5 (increase in number of seats per row)

n = 35 (number of rows of seats)

So,

S = 35/2 (2(20) + (35-1)(5))

S = 35/2 (40 + 160)

S = 35/2 (200)

S = 35*100

S = 3500

Hence, the total number of seats in the auditorium is 3500.

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The grams of sugar that is in Stefanie's syrup = 3.60g

The grams of sugar that is in John's syrup = 7.50g

The quantity of sugar syrup that Stefanie has = 18grams

The percentage of sugar syrup that is sugar = 20%

That is, 20/100 × 18

= 360/100

= 3.60g

The quantity of sugar syrup that John has = 30 g

The percentage of sugar syrup that is sugar = 25%

That is;

= 25/100 × 30

= 750/100

= 7.50g

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The volume of the solid is equal to the integral of the area of the semi-circular cross sections multiplied by the length of the interval. The area of the semi-circular cross sections is equal to πr²/2, where r is the diameter running from y. Therefore, the volume is equal to π/2∫0,9r²dy.

Step 1: Substitute the expression for the area of the semi-circular cross section into the equation for the volume of the solid:

V = π/2∫0,9r²dy

Step 2: Integrate the equation to find the volume of the solid:

V = π/2[y³/3]|0,9

Step 3: Evaluate the integral:

V = π/2(9³/3 - 0³/3)

step 4: Solve for the volume of the solid:

V = 7π/2

The volume of the solid is equal to the integral of the area of the semi-circular cross sections multiplied by the length of the interval. The area of the semi-circular cross sections is equal to πr²/2, where r is the diameter running from y. Therefore, the volume is equal to π/2∫0,9r²dy. To calculate the volume, we must first substitute the expression for the area of the semi-circular cross sections into the equation for the volume of the solid: V = π/2∫0,9r²dy. Then, we must integrate the equation to find the volume of the solid: V = π/2[y³/3]|0,9. After that, we must evaluate the integral: V = π/2(9³/3 - 0³/3). Finally, we must solve for the volume of the solid: V = 7π/2. The answer is the volume of the solid is 7π/2.

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The chef needed a) 3¾ cups of lemon juice and b) 20 pints olive oil for the larger batch.

A mixed fraction is one that has both its quotient and remainder represented. A mixed fraction like 2 1/3 is one where the remainder is 1 and the quotient is 2. Therefore, a mixed fraction is made up of both a whole number and a correct fraction.

The recipe was for 4 person, but now here are 40

The scale multiple is = 40/4

                                   = 10

a) As 1 cup = 16 tablespoon

The number of tablespoon of lemon required for 40 men = 6 × 10

                                                                                                 = 60

Converting to cup = 60/16

                              = 3¾ cups

b) As 1 cup = 0.5 pints

The number of cups of olive oil required for 40 men = 1 × 10

                                                                                        = 10

Converting to pints = 10/0.5

                              = 20 pints

Thus, The chef needed 3¾ cups of lemon juice and 20 pints olive oil for the larger batch.

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Answer:

Step-by-step explanation:
Let's represent the missing number with "---" -- so we have so far:

--- --- --- 30 --- --- 128 --- ---  ?
Now, let's say 5th position number is x and 6th position number is y
So, we have 30 + x = y and x+ y = 128
Combining these 2 equation, we get: x + 30 + x = 128 or x = 49, so y = 79

thus from 4th position, the series can be written as
30, 49, 79, 128, 207, 335, 542....
Thus, at 10th position we will have 542 !!!

The option that will cost less money from Regina is $8 a class.

A word problem in mathematics simply refers to a question that is written as a sentence or in some cases more than one sentence which requires an individual to use his or her mathematics knowledge to solve the real life scenario given.

Since the cost for the classes at the community center is $72, plus an additional one-time fee of $12 to rent

the yoga equipment used in class. The amount will be:

= $72 + $12

= $84

The other cost at $8 a class for 2 weeks will be:

= $8 × 10 days

= $80

The second option is cheaper.

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Yoga classes are offered 2 days a week for 6 weeks

at both the community center and the local gym.

The cost for the classes at the community center is

$72, plus an additional one-time fee of $12 to rent

the yoga equipment used in class. The cost at the

local gym is $8 a class. Regina wants to know which

class she can take for less money.

The total profit of F_1 in the week was $25920 and the total profit of F_2 in the week was $0.

The profit vector can be expressed as p = [35 62 30]. The total profit of F_1 and F_2 can be calculated by multiplying the matrix A by the vector p. The result, Ap, is a vector whose components give the total profits of the two stores in the week.

For example, the total profit of F_1 can be calculated as Ap_1 = [35 62 30] * [400 60 240] = [14000 3720 7200] = 25920.

Similarly, the total profit of F_2 can be calculated as Ap_2 = [35 62 30] * [0 0 0] = [0 0 0] = 0.

Therefore, the total profit of F_1 in the week was $25920 and the total profit of F_2 in the week was $0.

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The value of the variable x for the given f(x) = 2 by simplifying the antiderivative of  the given function is given by x = 0.4865.

As given in the question,

Given anti derivative of f(x)  :

For the limit 0 to x for the integration of e^4t with respect t

= [tex]\int\limits^x_0 {e^{4t} } \, dt[/tex]

= ( 1/4) e^4x  + ( 1/4 )

Value of the function f (x)  = 2

Now f(x) = 2

Substitute the value of the function f(x) we get,

( 1/4) e^4x  + ( 1/4 ) = 2

⇒ e^4x + 1 = 8

⇒ e^4x = 7

⇒x = log7 / 4

⇒ x= 0.4865

Therefore, the value of the x by simplifying the antiderivative function f(x) for the given f(x) = 2 is equal to 0.4865.

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T = si is an expression that can be used to represent the party's projected cost.

T = si is an expression that can be used to represent the party's projected cost.

It should be remembered that expressions depict how variables relate to one another.

We can use the following phrase to obtain an estimated party cost:

T = s×i

where:

T is the ice cream party's overall budget.

s is the number of ninth-graders.

I = the ice cream unit price.

discover more on expressions;

All ninth graders are invited to an ice cream celebration as a prize for accomplishing their goals.

1) Write an expression that could represent an estimated cost for the party. Use at least one letter. State what each part of the expression represents.

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When opposite sides of a quadrilateral is equal then the quadrilateral is Parallelogram. (PA = RT and PT = AR)

A basic quadrilateral with two sets of parallel sides is known as a parallelogram. In a parallelogram, the opposing or confronting sides are of equal length, and the opposing angles are of equal size.

A quadrilateral is a specific type of polygon known as a parallelogram if it contains two parallel opposed sides. A parallelogram has the following qualities:

Each coordinate of the Parallelogram :

P (-3, 0) , A(3, -1) , R ( 2, -5) and T(-4, -4)

Length of PA = √((3 + 3)² + (-1 - 0)²) = √(36 + 1) = √37

Lenght of TR = √((-4 - 2)² + (-4 + 5)²) = √(36 + 1) = √37

Length of PT = √((-3 + 4)² + (0 + 4)²) = √(16 + 1) = √17

Length of AR = √((3-2)² + (-1 + 5)²) = √(16 + 1) = √17

Here, PA = RT and PT = AR ,

so when opposite sides of a quadrilateral is equal then the quadrilateral is Parallelogram.

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1. 80 people attended only the FSU-Butler game.

2. 165. Since it's not possible to have negative number of people, the answer is 0.

3. 210 people attended at least two of these games.

4. 340 people attended the Marist and Butler games, but not the North Carolina State game.

5. 365 people attended the North Carolina State or the Butler game

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Answer:

  (3n +8) -3n = 8

Step-by-step explanation:

You have the difference (3n+15) -7, and you want its value when it is decreased by the triple of the original number (n).

The phrase "triple the original number" will be translated to 3n. This is the value you want to subtract.

  (3n +15) -7 = 3n +8 . . . . . "the difference"

  (3n +8) -3n = 8 . . . . . . . . "decreased by triple the original number"

This simplifies to 8, which is the point of the exercise: showing the sequence of steps always gives a value of 8.

When working with word problems, students should first read the problem and decide if it is a one-step or two-step problem.

A one-step problem involves solving for a single unknown quantity, such as finding the total cost of 10 pencils at $0.50 each. The formula for this would be C = Pn, where C is the cost, P is the price, and n is the number of items. To solve this problem, the student would multiply the price and number of items, so C = 0.50 x 10 = $5.00. A two-step problem involves solving for two unknowns, such as finding the total cost of 10 pencils at a 10% discount. The formula for this would be C = Pn (1 - r), where r is the discount rate. To solve this problem, the student would first calculate the discount by multiplying the price and number of items by the discount rate, so C = 0.50 x 10 x 0.10 = $0.50. Then the student would subtract the discount from the total cost, so C = 0.50 x 10 - 0.50 = $4.50.

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The P-value of the test is the probability of observing a sample proportion of 80/100 or less, given that the null hypothesis is true.

This can be calculated using the formula P(X <= x) = Σ (n x) p^(x) q^(n-x), where n = 100, x = 80, p = 0.75 and q = 1-0.75. Following this formula, the P-value of the test is calculated to be 0.0009. This means that there is a 0.0009 probability of observing a sample proportion of 80/100 or less, given that the null hypothesis is true. Therefore, the data provide convincing evidence that the proportion of people who lose their balance while standing on one foot and closing their eyes is less than 75%.The P-value of the test is the probability of observing a sample proportion of 80/100 or less, given that the null hypothesis is true.

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[tex]44+\cfrac{7}{8}r\implies 44+\cfrac{7}{8}\left( -\cfrac{1}{2} \right)\implies 44-\cfrac{7}{16}\implies \cfrac{(16)44~~ - ~~(1)7}{\underset{\textit{we'll use this LCD}}{16}} \\\\\\ \cfrac{704~~ - ~~7}{16}\implies \cfrac{697}{16}\implies 43\frac{9}{16}[/tex]

The wheel of the car makes 500.5 revolution per minute

frequency is defined as the number of oscillation or revolution made in one seconds. It measured in Hertz. frequency is denoted as F. And it is expressed as :

F = w/2π

Where w = angular velocity and

2π = 360 which is also a revolution

to calculate w ;

v = wr

r = 35cm = 0.35m

v = 66km/h = 66×1000/60

v= 1100m/mins

therefore from the relation, v = wr

w = v/r

w = 1100/0.35

w = 3142.9rad/mins

therefore F = w/2π

F = 3142.9/ 2×3.14

F = 500.5 revolution per minute

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Answer:

10%

Step-by-step explanation:

if the volume of the water increase by 10 when turns to

ice so it must be decrease by 10 if it changes to water again

Answer: C. 25%

Step-by-step explanation: This is a basic probability problem. First, you must find the total which is in question. 400 grams is the total in this case. The Cs make up 100 grams of this. Next, you put the part over the whole, and divide. 100/400= 0.25. When you want to find the probability with the probability sign, you move the decimal place two points to the right and then add the sign. Hence, 25%.

A Gallup poll conducted in April found that 55% of Americans believe driverless cars will be common in the next 10 years, as presented in a histogram showing the percentage of responses in different time intervals.

A Gallup Poll was conducted in April that surveyed adults aged 18 or older to gauge their perceptions on when fully automated "driverless cars" will be commonly used in the United States.

The question asked was "how soon do you think driverless cars will be commonly used in the United States?" The survey indicated that 55% of Americans believe that driverless cars will be common in the next 10 years.

The results of the survey were presented in a histogram, showing the percentage of responses in different time intervals, which means it shows how many people responded within a certain time frame (e.g. within 5 years, within 10 years, etc.) when they think driverless cars will be commonly used.

This poll gives an insight into how people perceive the future of driverless cars and how soon they think it will become a common sight on the roads.

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The question is -

A Gallup Poll utilizing a random sample of adults ages or older was conducted in April. The survey indicated a majority of Americans () say driverless cars will be common in the next years (). The question asked was: Thinking about fully automated, "driverless cars," cars that use technology to drive and do not need a human driver, based on what you have heard or read, how soon do you think driverless cars will be commonly used in the [United States]? The figure below shows a summary of the results of the survey in a histogram indicating the percentage of the total responses in different time intervals.

Answer:

v = 113.04 [tex]units^{3}[/tex]

Step-by-step explanation:

v = 4/3[tex]\pi r^{3}[/tex]

v = 4/3[tex]\pi 3^{3}[/tex]

v = 113.04 [tex]units^{3}[/tex]

Answer:

0

Step-by-step explanation:

I believe this is correct. Since they don't have the same sign then you will just have to subtract them.

Answer: 6

Step-by-step explanation: