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2 years ago

I subtract 3 from a certain number, multiply the result by 5 and then add 9

Mathematics

2 answers:

viktelen [127]2 years ago

4 0

Answer:

Step-by-step explanation:

I subtract 3 from a certain number, multiply the result by 5 and then add 9

Remember PEMDAS

(x - 3) * 5 + 9 =

5x - 15 + 9 =

5x - 6

mr_godi [17]2 years ago

3 0

Answer:

The number is 5x-6

Step-by-step explanation:

Let the number be x.

Then,

Subtracting 3,

x - 3

Multiplying by 5,

(x-3)5
5(x-3)

Adding 9:

5(x-3)+9

Solving Further:

5x-15+9
5x-6

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A contractor has been hired to install flooring for a bandstand in the shape of a circle that is 21 feet across. How many square

SOVA2 [1]

Answer:

A. 346.19 square feet.

Step-by-step explanation:

We have been given that a contractor has been hired to install flooring for a bandstand in the shape of a circle that is 21 feet across.

To find the square feet of flooring required, we will find area of circle.

Since the length across the circle is 21 feet, so radius of circle will be half of 21 feet.

$\text{Radius}=\frac{\text{21 feet}}{2}$

$\text{Radius}=\text{10.5 feet}$

$\text{Area of circle}=\pi r^2$

$\text{Area of circle}=\pi (\text{10.5 feet})^2$

$\text{Area of circle}=3.14*110.25\text{ feet}^2$

$\text{Area of circle}=346.185\text{ feet}^2$

$\text{Area of circle}\approx 346.19\text{ feet}^2$

Therefore, 346.19 square feet of flooring will be required.

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3 years ago

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Answer: the answer is 25 percent

Step-by-step explanation: 25 percent times 48 is 12

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3 years ago

1. If B is between A and C, AB = 12 in., and AC = 19 in., then what is BC?

Oksanka [162]

Answer:

BC = 7.

Step-by-step explanation:

subtract 12 inches from 19 and then you get the result for BC.

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Gelneren [198K]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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