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katen-ka-za [31]

3 years ago

10

Daniel's mom deposits $80 into his savings account for the year. Daniel decides to upgrade his game account which costs $7 per m

onth. How many months will Daniel be able to pay for his game account if his mom doesn't deposit any more money into his savings account?

1 answer:

blagie [28]3 years ago

3 0

Answer:

11.43

Step-by-step explanation:

80÷7= 11.428571428571428571428571428571

i hope this helps

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Answer:

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Step-by-step explanation:

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Pyramid A has a triangular base where each side measures 4 units and a volume of 36 cubic units. Pyramid B has the same height,

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Answer:

The volume of pyramid B is 81 cubic units

Step-by-step explanation:

Given

<u>Pyramid A</u>

$s = 4$ -- base sides

$V = 36$ -- Volume

<u>Pyramid B</u>

$s = 6$ --- base sides

Required

Determine the volume of pyramid B <em>[Missing from the question]</em>

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

The volume is calculated as:

$V = \frac{1}{3} * B * h$

Where B represents the area of the base equilateral triangle, and it is calculated as:

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Where s represents the side lengths

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For Pyramid A, the base area is:

$B = \frac{1}{2} * s^2 * sin(60)$

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$B = \frac{1}{2} * 16 * \frac{\sqrt 3}{2}$

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$V = \frac{1}{3} * B * h$

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Make h the subject

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$V = \frac{1}{3} * B * h$

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

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The base area B, is then calculated as:

$B = \frac{1}{2} * s^2 * sin(60)$

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$B = 9\sqrt 3$ and $h = \frac{27}{\sqrt 3}$

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

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