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EastWind [94]
3 years ago
13

James bought 5 boxes of cookies and 2 cakes at the store for his party. The cakes cost $4 each and his total bill was $28.50, ho

w much was each box of cookies?
Mathematics
1 answer:
maxonik [38]3 years ago
7 0
Number of cookie boxes bought by James = 5
Number of cakes bought by James = 2
Cost of each cakes = $4
Total bill paid by James = $28.50
Let us assume the cost of the each boxes of cookies = x
Then
5x + (2 * 4) = 28.50
5x + 8 = 28.50
5x = 28.50 - 8
5x = 20.50
x = 20.50/5
   = 4.10
So we can see from the above deduction that the cost of each boxes of cookies bought by James is $4.10
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Answer:

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Step-by-step explanation:

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Required

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From the question, we understand that both pyramids are equilateral triangular pyramids.

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B = \frac{1}{2} * 4^2 * \frac{\sqrt 3}{2}

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Make h the subject

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h = \frac{3 * 9}{\sqrt 3}

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Since the heights of both pyramids are the same, we can make use of:

h = \frac{27}{\sqrt 3}

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V = \frac{1}{3} * 9 * 27

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