Explain this strategy: 1.4 to the power of 4 times .75 squared equals 2.1609
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The volume of a sphere uses the following formula:
Because the question asks to use 3.14 in place of pi, the formula will now look like this:
We are given a diameter of 118 feet. The radius is half of the diameter, so divide the diameter by 2 to find the radius:
Plug this value into the formula, and solve with a calculator:
Although our result is one cubic foot off, the answer is <span>A. 859,852ft^3.
(859,852 is the result if the constant in the given formula is 4.18666, but the result with infinitely repeating numbers is 859,853.)</span>
Because the question asks to use 3.14 in place of pi, the formula will now look like this:
We are given a diameter of 118 feet. The radius is half of the diameter, so divide the diameter by 2 to find the radius:
Plug this value into the formula, and solve with a calculator:
Although our result is one cubic foot off, the answer is <span>A. 859,852ft^3.
(859,852 is the result if the constant in the given formula is 4.18666, but the result with infinitely repeating numbers is 859,853.)</span>
Your two equations are at the top, in the box is what each variable represents. Below the box is total liters of the 15%, which is going to equal the total liters for 10% plus the total liters for 25%. Make your percentages into decimals. There’s a total of 30 liters so, x+y needs to equal 30. Isolate a variable, I chose y, you can do either or (isolating x would be more math). Y is going to equal 30-x, substitute that for the Y in the second equation, then you need to distribute 0.25 into 30-x. Then it’s simple math, subtract 7.50 from both sides, add like gets, divide both sides by -0.15, making x=20.
