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4 years ago

True or false To increase the size os an drawing we multiply the side lengths by a fraction

Mathematics

1 answer:

Aliun [14]4 years ago

5 0

Answer:

true im not sure

Step-by-step explanation:

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Sarah says that you can use the area of a

dimulka [17.4K]

Answer:

Sarah is Correct

Step-by-step explanation:

If we are given the area of a circle as 44 Square Centimeter, we know that:

Area of a Circle $=\pi r^2$

Circumference of a Circle $=2\pi r$

Therefore, from the area, we can obtain the value of the radius to calculate the circumference of the circle:

$\pi r^2=44\\r^2=\dfrac{44}{\pi} \\r=\sqrt{\dfrac{44}{\pi} }$

Therefore:

Circumference of the circle $=2\pi \sqrt{\dfrac{44}{\pi} }$

=23.51 centimeters.

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3 years ago

Which of the following is an equation for the sine wave graphed below?

frutty [35]

Answer:

A $y=8\sin \dfrac{1}{2}x$

Step-by-step explanation:

From the graph you can see that the period of the function is

$720^{\circ}=4\pi$

Now the period of the function $y=8\sin kx$ is

$T=\dfrac{2\pi}{k}$

Thus,

$4\pi=\dfrac{2\pi}{k}\Rightarrow 4\pi k=2\pi\\ \\k=\dfrac{2\pi}{4\pi}=\dfrac{1}{2}$

and the expression for the function is

$y=8\sin \dfrac{1}{2}x$

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3 years ago

What is 2.34 billion in scientific notation

Gre4nikov [31]

2.34 x 10 to the 9th power i think

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3 years ago

Which of the following are valid probability distributions for a discrete random variable ?

trapecia [35]

It’s D I think. Since A and B are not random, C and E are not discrete

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3 years ago

Help past due! Will mark brainlest

Evgesh-ka [11]

I have no clue man maybe ask the teacher

7 0

3 years ago

True or false To increase the size os an drawing we multiply the side lengths by a fraction​

True or false To increase the size os an drawing we multiply the side lengths by a fraction