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pentagon [3]
3 years ago
9

Alex collects stamps. He wants to buy a superhero set for $3.88, a president set for $5.88, and a dinosaur set for $3.88. He has

$15 to spend on stamps. Which statement best describes whether an exact total or an approximate total should be calculated? A. Alex must add the 3 amounts exactly so he will know if he has enough money to buy the stamps. B. Alex can round the prices of the stamps to the nearest dollar and then add to estimate if he has enough money.
Mathematics
2 answers:
Anuta_ua [19.1K]3 years ago
6 0
The answer is B because the prices are close enough to the next dollar that it would be too high of an estimate to round up
ohaa [14]3 years ago
4 0

Answer:

b. alex can round the prices of the stamps to the nearest dollar and then add to estimate if he has enough money.

Step-by-step explanation:

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krok68 [10]
Let me tell you the process so that you get to the answer
Remember first that the area of a regular polygon with x sides has  each of them a length which can be represented by y 

<span>A = 1/4 * xy^2 * Cot(180/x) </span>
<span>The purpose is to solve for y, so we get </span>
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<span>y = √(4A/(xCot(180/x)))

The thing we need to change is A in the previous formula and with that we can use the equaation to be a constant. This could be represented by Z
</span><span>Z = √(4/(xCot(180/x)))
so
</span><span>Y = Z√A 
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</span>So if you want to know the triple then you need to increase it by <span> √3 </span> <span>  </span>
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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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