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3 years ago

The circle below is centered at the origin and has a radius of 4. What is its equation?

Mathematics

1 answer:

Alecsey [184]3 years ago

7 0

Answer:

C) x^2 + y^2 = 16

Step-by-step explanation:

<h2>Find the equation </h2>

since the radius is 4 this means that anywhere from the center of the circle to the edge of the circle is 4. hence :

place the horizontal line of the radius where y = 0 .

this means that if y = 0 , then x = 4

therefore :

x^2 + y^2

4^2 + 0^2

= 16

<h3>hence the answer is C ) x^2 + y^2 = 16</h3>

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3 years ago

A box of crayons costs $1.75, including tax. Mr. Valentino wants to purchase boxes of crayons for his class and has a $25 budget

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Answer: A ) $1.75 x ≤ $25,
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3 years ago

Read 2 more answers

I think of a number, add 3 to it and multiply the result by 7.

Alla [95]

Answer:

$7(x + 3)$

Step-by-step explanation

thinked number = x

add 3 = +3

$x + 3$

multiply the result by 7

 $7( x+ 3)$ 

hope this helps

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good luck! have a nice day!

6 0

3 years ago

Differentiate between a fixed and movable pulley.

Tamiku [17]

Answer:

Step-by-step explanation:

A fixed pulley consists of a wheel fixed to a shaft and is used in conjunction with a belt to transfer energy to another fixed pulley. A movable pulley consists of a shell, a movable wheel and a rope. Movable pulleys are also know as block and tackle.

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2 years ago

Which statement correctly compares the mean number of students for the data in the plots?

satela [25.4K]

Answer:

"There are about 2 more students in each class at Oak Middle School than at Poplar Middle School."

Step-by-step explanation:

We need to compute the mean for each.

Poplar Middle School:

Lets list the numbers

20,20,20,21,21,21,21,21,22,22,22,22,22,22,22,23,23,23,23,24

The average is sum of all divided by number of numbers, that will be:

435/20 = 21.75

Oak Middle School:

The numbers are:

20,21,21,22,22,23,23,23,23,24,24,24,25,25,26,26,27,27,28,29

The average is sum divided by number of numbers, that will be:

483/20 = 24.15

The difference in mean is:

24.15 - 21.75 = 2.4

We can say, that is about 2 more students in Oak Middle School, correct answer choice is "2nd answer choice" - "There are about 2 more students in each class at Oak Middle School than at Poplar Middle School."

7 0

3 years ago