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3 years ago

What is the equation for the line that has a slope of -2 and a y-intercept of (0,9)?

Mathematics

1 answer:

VMariaS [17]3 years ago

7 0

Answer:

y=-2x+9

Step-by-step explanation:

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PLEASE HELP! BRAINLIEST!!!!!!! PLEASE

Gnesinka [82]

Hello!

First you have to find the volume of the cylinder

To find the volume of a cylinder you use the equation

$V = \pi r^{2} h$

V is volume
r is radius
h is height

Put in the values you know and 3.14 for pi

$V = 3.14 * 3^{2} * 7$

Square the number

V = 3.14 * 9 * 7

Multiply

V = 197.82
------------------------------------------------------------------------------------------------------
Next you find the volume of the sphere

To find the volume of a sphere you use the equation

$V = \frac{4}{3} \pi r^{3}$

V is volume
r is radius

Put in the values you know and 3.14 for pi

$V = \frac{4}{3} * 3.14 * 3^{3}$

Cube the number

$V = \frac{4}{3} * 3.14 * 27$

Multiply

V = 113.04
------------------------------------------------------------------------------------------------------
Finally you subtract the two volumes from each other

197.82 - 113.04 = 84.78
------------------------------------------------------------------------------------------------------
The answer is C)84.78

Hope this helps!

7 0

3 years ago

Read 2 more answers

The table represents a linear function. Write a rule for this function in the

dangina [55]

Answer:

function is f(x) = x+6

and the missing outputs are 19, 24 and 27

5 0

3 years ago

What is an appropriate scale to graph a credit of $35 and a debit of $40?Explain your reasoning

miss Akunina [59]

A bar graph since I'm only going up by fives it's easy to show as a bar graph

4 0

3 years ago

In ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45. What is the value of the cosine of ∠X to the nearest hundredth?

kotegsom [21]

The value of ∠X = 58.11°, If ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45.

Step-by-step explanation:

The given is,

In ΔWXY, ∠Y=90°

XW = 53

YX = 28

WY = 45

Step:1

Ref the attachment,

Given triangle XWY is right angled triangle.

Trigonometric ratio's,

$Cos$ ∅ $= \frac{Adj}{Hyp}$

For the given attachment, the trigonometric ratio becomes,

$Cos$ ∅ $= \frac{XY}{XW}$ .....................................(1)

Let, ∠X = ∅

Where, XY = 28

XW = 53

Equation (1) becomes,

$Cos$ ∅ $= \frac{28}{53}$

$Cos$ ∅ = 0.5283

∅ = $cos^{-1}$ (0.5283)

∅ = 58.109°

Result:

The value of ∠X = 58.11°, If ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45.

4 0

3 years ago

I don't understand this problem...<br> 1/4 x (-12)=

Nikitich [7]

Answer:

-3

Step-by-step explanation:

When multiplying a positive number with a negative number, the product will <u>always</u> be negative. First, let's solve the problem disregarding the negative sign.

$\frac{1}{4} * 12$
$\frac{12}{4}$
$3$

Now that we know the product of 1/4 x 12 is 3, we can assume that the product of 1/4 x -12 is -3.

4 0

2 years ago

Read 2 more answers