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3 years ago

A bowl shaped like a sphere has a radius of 15 cm. Which is closest to the amount of air needed to fill the ball?

2 answers:

6 0

The formula for a sphere is 4/3*pi*r^3 so we replace 15 with 5 since 15 is the radius and after multiplying everything you get 14,137.17 which can be rounded the 14,130 which is B

SIZIF [17.4K]3 years ago

4 0

I believe it is D not quite sure

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Using the Time Series Data for the US Nuclear Electric Power Production, calculate the exponential smoothing forecasts for 2005

Marat540 [252]

Answer:

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3 years ago

The product of

Basile [38]

Answer:

a= 12

b=-2

Step-by-step explanation:

12 x -2 = -24

12 - (-2) = 14

12 + (-2) = 10

3 0

3 years ago

What number must be added to both sides of the equation to complete the square ?

77julia77 [94]

First consider (x+c)^2 where c is just a random constant. if we expand this by foil (which is distributive property twice), we get x^2 + 2cx+ c^2. we want to find c^2 and to do that, we can first find c. we can find c by looking at the 2cx term. this term should match with 12x, so therefore 2c = 12 so c = 6. this also implies that c^2 = 36.
note that for this problem i was working backwards which is a very powerful problem solving tool: start with what you want to attain, and then see how you can go from where you are now to get to your destination.

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7 0

3 years ago

In the year 2000,there were 8.7 deaths per 1000 reidents in the United States.If there were 281,421,906 residents in the U.S.dur

bekas [8.4K]

$\frac{deaths}{residents} \: \frac{8.7}{1000} \: \frac{x}{281421906}$
Find the "difference" between the residents but division.

281421906/1000 = 281421.906
You always have to do the same to the top
8.7×281421.906 = 2,448,370.5822

There were 2,448,370.5822 deaths

Tell me if it helps!!

7 0

3 years ago

Over the weekend halverson had put together 3/16 if a jigsaw puzzle while jamie put together 10/16 of the puzzle. Who had coplet

Luden [163]

Answer:

Jamie. by 7/16

Step-by-step explanation:

Halverson completed: 3/16

Jamie completed: 10/16.

To understand who completed more, look at the denominator. The common denominator is 16. Assume a puzzle has 16 pieces and Halverson did 3 out of 16 and Jamie did 10 out of 16. This means Jamie did more.

If you want to know by how much Jamie did more, it would be the difference of both the fraction. This means that 10 done by Jamie minus 3 done by Halverson, which is 7. So 7 out of 16 is the difference.

$\frac{10}{16} -\frac{3}{16}$

7 out of 16 can be written as 7/16

6 0

3 years ago