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Mademuasel [1]
3 years ago
5

When a number is increased by 7.1%, the result is 89. What is the original number to the nearest tenth?​

Mathematics
1 answer:
balu736 [363]3 years ago
3 0

Answer:

The original number is 83.1

Step-by-step explanation:

Let

x -----> the original number

Remember that

100\%+7.1\%=107.1\%=107.1/100=1.071

The increased number is equal to multiply the original number by the factor 1.071

so

89=1.071x

Solve for x

Divide by 1.071 both sides

x=83.1

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Viefleur [7K]

The surface area of the cylinder will be 1206.37 square feet.

<h3>What is surface area?</h3>

The space occupied by any two-dimensional figure in a plane is called the area. The area of the outer surface of any body is called as the surface area.

Given that the radius of the cylinder is r = 12 ft and the length of the cylinder is 16 ft.

The volume of the cylinder is calculated as:-

V = 2πrl

V = 2 x π x 12 x 16

V = 1206.37 square feet.

Therefore the surface area of the cylinder will be 1206.37 square feet.

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4 0
2 years ago
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solmaris [256]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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Leo is purchasing a bike that is on sale for 30% off. He knows the function that represents the sale price of his bike is c(p) =
Umnica [9.8K]

Answer:

f[c(p)] = 0.784p

Step-by-step explanation:

sales discount = 30%

sales tax = 12%

c(p) = 0.7p where p is the original price

f(c) = 1.12c where c is the sales price of the bike.

f[c(p)] = 1.12(0.7p)

f[c(p)] = 0.784p    Last option.

Assume: p = 100

c(100) = 0.7(100) = 70

f(70) = 1.12(70) = 78.4

f[70(100)] = 0.784(100) = 78.4

7 0
3 years ago
4n-11=9 replacement set of 4,5,6
Brilliant_brown [7]

Answer:

n = 5

Step-by-step explanation:

4n - 11 = 9

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4n/4   =  20/4

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3 years ago
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lana [24]

Answer:

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Step-by-step explanation:

36.36/0.6

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4 0
3 years ago
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