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cricket20 [7]
2 years ago
8

4) A TV is on sale. The TV has been reduced by 20%. The sale price is £540. What was the

Mathematics
1 answer:
OLga [1]2 years ago
3 0

Answer:

675

Step-by-step explanation:

If the price is 20 % off, then we will pay 100-20 = 80 percent of the original price

Let x be the original price

x* 80% = 540

Change to decimal form

x * .80 = 540

Divide each side by .80

.80x / .80 = 540/.80

x =675

The original price is 675

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Answer:

5127079.21 cubic feet

Step-by-step explanation:

The silo is in the shape of a cylinder and a cone.

The volume of the silo will be the sum of the volumes of the cylinder and the cone.

Therefore, its volume is:

V = \pi r^2h + \frac{1}{3} \pi rH

where r = radius of cylinder and cone

h = height of cylinder

H = height of cone

The radius of the base is 120 feet, the height of the roof (cone) is 25 feet. The height of the entire silo is 130 feet. This means that the height of the cylinder is:

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Therefore, the volume of the silo is:

V = (\pi * 120^2 * 105) + (\frac{1}{3} * 120^2 * 25)\\\\V = 4750088.09 + 376991.12\\\\V = 5127079.21 ft^3

The volume of the silo is 5127079.21 cubic feet.

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2 years ago
Mr.kelly pays $12,564 a year for rent. His rent is a constant amount each month. Which equation represents the amount he pays he
Nuetrik [128]

Answer:

1047 m = c

Step-by-step explanation:

Given : Mr.kelly pays $12,564 a year for rent. His rent is a constant amount each month.

To Find:Which equation represents the amount he pays her month if m=months and c=total rent paid for the year?

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Since he pays for a year (12 months) =  $12,564

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Thus the amount he pays per month $1047

If he pays for m months then the total amount(c) of rent for m months

⇒1047 m = c

Hence equation represents the amount he pays her month if m=months and c=total rent paid for the year: 1047 m = c

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Step-by-step explanation:

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