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3 years ago

6

What is the volume of a cylinder with a radius of 479.087 and a height of 29.3

1 answer:

erma4kov [3.2K]3 years ago

6 0

So the formula for volume of a cylinder is pi multiplied by radius squared times height

so the volume would be 6,725,063.56 units squared

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A car travels 45km in an hour. In each of the next two hours, it travels 78km. What is the average speed of the car.

romanna [79]

Answer:

The average speed of car is 67 kilometers per hour.

Step-by-step explanation:

Given that:

Distance travelled in one hour = 45 km

Distance travelled in next 2 hours = 78*2 = 156 km

Total distance = 45+156 = 201

Total time = 1+2 = 3 hours

Average speed of the car = $\frac{Total\ distance}{Total\ time}$

Average speed of the car = $\frac{201}{3}$

Average speed of the car = 67 km/hr

Hence,

The average speed of car is 67 kilometers per hour.

7 0

3 years ago

Pls help me!!<br> Which two equations are equivalent?<br> y= 1/2x+3<br> y=x+6<br> 2y=x+6

Zigmanuir [339]

Answer:

first and third

Step-by-step explanation:

Consider

y = $\frac{1}{2}$ x + 3 ( multiply through by 2 )

2y = x + 6 ← third equation

4 0

3 years ago

Read 2 more answers

Last week, Ms. Herald walked 1.6 miles for 3 nights last week. She walked an

ikadub [295]

Answer:

1.6 + 1.6 + 1.6 + 3.1 = 7.9 miles walked

5 0

3 years ago

Which associations best describe the scatter plot?

Sidana [21]

Answer:

nonlinear association

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Let f(x) = x+2/x+6 <br> f^-1(-6) =

GREYUIT [131]

We can explicitly find the inverse. If $f^{-1}(x)$ is the inverse of $f(x)$ , then

$f\left(f^{-1}(x)\right) = \dfrac{f^{-1}(x)+2}{f^{-1}(x)+6} = x$

Solve for the inverse :

$\dfrac{f^{-1}(x) + 2}{f^{-1}(x) + 6} = x$

$\dfrac{f^{-1}(x) + 6 - 4}{f^{-1}(x) + 6} = x$

$1 - \dfrac4{f^{-1}(x) + 6} = x$

$1 - x = \dfrac4{f^{-1}(x) + 6}$

$f^{-1}(x) + 6 = \dfrac4{1-x}$

$\implies f^{-1}(x) = \dfrac4{1-x} - 6$

Then when x = -6, we have

$f^{-1}(-6) = \dfrac4{1-(-6)} - 6 = \dfrac47-6 = \boxed{-\dfrac{38}7}$

Alternatively, we can first solve for x such that $f(x) = -6$ . Then taking the inverse of both sides, $x = f^{-1}(-6)$ . (The difference in this method is that we don't compute the inverse for all x.)

We have

$\dfrac{x+2}{x+6} = -6$

$x + 2 = -6 (x + 6)$

$x + 2 = -6x - 36$

$7x = -38$

$\implies x = \boxed{-\dfrac{38}7}$

8 0

3 years ago