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3 years ago

What is the expanded form of this number?

Mathematics

1 answer:

Yuliya22 [10]3 years ago

8 0

Answer:

A (1×10)+(4×1)+(7×1/10)+(2×1/1,000)

Step-by-step explanation:

In the expanded form, the number is shown as a sum in which each digit is multiplied by its place value.

The decimal fraction digits are in the tenths place (1/10) and the thousandths place (1/1000).

(1×10)+(4×1)+(7×1/10)+(2×1/1,000)

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A rectangular swimming pool is 25 ft long and 20 1/2 ft wide, and it must be filled to a depth of 4 1/2 ft. One cubic foot of wa

bazaltina [42]

ANSWER

307½ gallons of water

EXPLANATION

The volume of the rectangular swimming pool is

$V = l \times w \times h$

where l=25ft and w=20½ ft.

when it is filled to a depth of 4½ ft ,then the height is , h=4½ ft.

We substitute these values into the formula to get:

$V = 25\times 20.5\times 4.5$

$V = 2306.25 {ft}^{3}$

If one cubic foot of water is 7½ gallons, then 2306.25 cubic feet will be

$\frac{2306.25}{7.5} = 307.5gallons$

We need 307.5 gallons of water to fill the pool.

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