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DENIUS [597]
3 years ago
5

When 19 is added to one-quarter of a number, the result is 40. What is the number?

Mathematics
2 answers:
Kaylis [27]3 years ago
6 0

Answer:

5.25

Step-by-step explanation:

1. 19 + 1/4x =40

2. 1/4x=40-19

3. 1/4x=21

4. x= 21/1/4

5. x= 5.25

Alborosie3 years ago
4 0
84. Subtract 19 from 40 and multiply that number times the reciprocal of 1/4... which is 4
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Answer:

\boxed {c= 18.84 \ m}

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Step-by-step explanation:

We are asked to find the circumference and area of a circle with a radius of 3 meters.

<h3>1. Circumference </h3>

The circumference is the perimeter of a circle. It is calculated using the following formula:

c= \pi d

We know the radius of the circle is 3 meters, but we must find the radius. The radius is the line from the center to the circle's edge, while the diameter is the line through the center from edge to edge. Therefore, the diameter is twice the radius.

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<h3>2. Area </h3>

The area is the size of the circle's surface. It is calculated using the following formula.

a= \pi r^2

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a= (3.14)(3 \ m)^2

Solve the exponent.

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a= (3.14)(9 \ m)^2

\bold {a=28.26 \ m^2}

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