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2 years ago

SOMEONE PLEASE HELP ME I DONT KNOW HOW TO DO THIS AT ALL

Mathematics

1 answer:

Lina20 [59]2 years ago

6 0

Answer:

$y=2cos(4\pi x)\\
$

Step-by-step explanation:

Since the amplitude of the cosine function is 2, I would put the multiply it by 2. There is no phase shift

The period is 1/2, so it would be 4pi

Plug them in into y=Acos(Bx), y=2cos(4pix)

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Phillip write an integer that is less than -2 and greater than -3.5 Which integer did he write?

Rus_ich [418]

The answer would be -4

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3 years ago

Read 2 more answers

MULTIPLE CHOICE QUESTION

Lostsunrise [7]

Answer: C. 4

Step-by-step explanation:

First, we can prime factorize 52.

52 = 2^2 * 13

13 is not a square number, but 4 is a square number because it equals 2 squared.

Therefore, the correct answer is C. 4

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2 years ago

I need help on this homework

wel

(-9x²-2x) - (-9x²-3x) = (-9x²-2x) +(9x²+3x) = -9x²-2x+9x²+3x = (-9x²+9x²)+(-2x+3x) = x

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3 years ago

Please asap<br>for 10 points!

kari74 [83]

<h3>Given:</h3><h3>Large cone:</h3>

r= 8 cm
h= 20 cm

<h3>Small cone:</h3>

r= 4 cm
h= 10cm

r: radius
h: height

The volume of the frustum of the given cone.

<h3>Solution:</h3>

Frustum is a part of a cone formed by cutting off the top by a parallel plane.

$\large\boxed{Formula: V= \frac{1}{3}\pi{r}^{2}h}$

Let's solve!

First, let's find the volume of the smaller cone.

Substitute the values according to the

formula.

$V= \frac{1}{3}×\pi×{4}^{2}×10$

$V= 167.5516082 \: {cm}^{3}$

Now, we can round off to the nearest hundredth.

The value in the thousandths place is smaller than 5 so we won't have to round up.

$\boxed{V= 167.55 \: {cm}^{3}}$

Next, let's find the volume of the bigger cone.

Substitute the values according to the formula.

$V= \frac{1}{3}×\pi×{8}^{2}×20$

$V= 1340.412866 \: {cm}^{3}$

Now, we can round off to the nearest hundredth.

The value in thousandths place is smaller than 5 so we won't have to round up.

$\boxed{V=1340.41 \: {cm}^{3}}$

Now, we can find the volume of the frustum.

We'll have to minus the volume of the smaller cone from the bigger cone.

$V= 1340.41-167.55$

$\large\boxed{V= 1172.86 \: {cm}^{3}}$

<u>Hence, the volume of the frustum is 1172.86 cubic centimeters.</u>

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1 year ago

Sean, a freelance editor, charges the rates shown in the table below to edit manuscripts. The cost per page increases as the qua

Gnom [1K]

85c - 0.5(85c) = 161.5
85c - 4.25c = 161.5
80.75c = 161.5
c = 161.5 / 80.75
c = 2............so she needs express proofreading
==================
x - 3 < -7 x + 5 > = 8
x < -7 + 3 x > = 8 - 5
x < -4 x > = 3

open circle on -4, shading to the left....closed circle on 3, shading to the right

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3 years ago