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2 years ago

7

Hello! if you you can the do following I can follow you and give you a thank you. (Who ever is first to answer ill give "Best an

swer")

1 answer:

Citrus2011 [14]2 years ago

5 0

It requires a circular movement to either left or right to get the figure on the right side of the paper.

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Sandra calculated the height of a cylinder that has a volume of 576 pi cubic centimeters and a radius of 8 centimeters. Her work

r-ruslan [8.4K]

Answer:

The error was made in step 4, $\pi$ should have also been cancelled making the correct answer as 9 cm.

Step-by-step explanation:

Given that:

Volume of cylinder, $V = 576 \pi\ cm^3$

Radius of cylinder, r = 8 cm

To find:

The error in calculating the height of cylinder by Sandra ?

Solution:

We know that volume of a cylinder is given as:

$V = B h$

Where B is the area of circular base and

h is the height of cylinder.

Area of a circle is given as, $B = \pi r^2$

Let us put it in the formula of volume:

$V = \pi r^2 h$

Step 1:

Putting the values of V and r:

$576\pi = \pi 8^2 h$

So, it is correct.

Step 2:

Solving square of 8:

$576\pi = \pi \times 64\times h$

So, step 2 is also correct.

Step 3:

$h=\dfrac{576\pi}{64 \pi} = \dfrac{64 \pi \times 9}{64\pi}$

Step 4:

Cancelling 64 $\times \pi$ ,

h = 9 cm

So, the error was made in step 4, $\pi$ should have also been cancelled making the correct answer as 9 cm.

3 0

3 years ago

Find the quotient of (-5+ i)/(-7 + i)

kari74 [83]

Use the complex conjugate of (-7 + i) to remove the complex number from the denominator and then simplify.
See attached.

6 0

3 years ago

Please help! I really need this other wise I’m going to fail! I can’t figure it out!

dalvyx [7]

I think the answer is d. when you add everything in the punnet square you get 36x^2-3x-14.

7 0

3 years ago

1 tank of propane holds 5 gallons and will last 12 hours. how many gallons of propane is needed for 240 hours.

MAVERICK [17]

5 gallons x gallons

------------- = ----------------

12 hours 240 hours

using cross products

5 * 240 = 12 * x

1200 = 12 x

divide each side by 12

1200/12 = 12x/12

100 =x

You will need 100 gallons

8 0

3 years ago

Read 2 more answers

Frank brought some milk home from the dairy farm. He was able to pour 12 glasses of milk. Each glass held 1/2 pint of milk.

olga2289 [7]

He brought home 6 pints of milk home
hope it helps

5 0

3 years ago