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d1i1m1o1n [39]
3 years ago
7

The Travers are adding a new room to their house. The room will be a cube with volume

Mathematics
1 answer:
Damm [24]3 years ago
4 0

Answer:

$1620

Step-by-step explanation:

The volume (V) of a cube is calculated as

V = s³ ( s is the length of the side )

Here V = 5832 , then

s³ = 5832 ( take cube root of both sides )

s = \sqrt[3]{5832} = 18 ft

The area of the square floor is then

area = 18² = 324 ft²

cost = 324 × $5 = $1620

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The length of a rectangle is three times its width the length is 3 3/4 feet. What is the area if the rectangle?
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Answer:

A = 4 11/16 or 4.6875

Step-by-step explanation:

3 3/4 = 3W

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Step-by-step explanation:

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2 years ago
The rule of 72 is used to determine how long it will take an investment to ___. For an Investment of $5,000 earning 7% annually,
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Answer:

The rule of 72 is used to determine how long it will take an investment to Double

For an Investment of $5,000 earning 7% annually, this will take about ten years

Step-by-step explanation:

The rule of 72 says that to find the number of years required to double your money at a given interest rate, you just divide 72 by the interest rate

Example:

If you want to know how long it will take to double your money at 9% interest, divide 72 by 9 you will get 8 years

The formula of the rule of 72 is Y = \frac{72}{r}

Let us complete the missing

The rule of 72 is used to determine how long it will take an investment to Double

The missing word is "Double"

∵ The investment is $5,000

∵ The annual interest is 7%

- By using the rule of 72

∵ Y = \frac{72}{r}

∵ r = 7

∴ Y = \frac{72}{7}

∴ Y = 10.29

- Round it to the nearest year

∴ Y ≅ 10 years

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The missing word is "ten"

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Answer:

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Step-by-step explanation:

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