3 years ago

The price of an item has dropped to $84 today. yesterday it was $120 . find the percentage decrease.

Mathematics

1 answer:

ddd [48]3 years ago

8 0

The price of an item has dropped to $84 today. yesterday it was $120 . find the percentage decrease.

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Find the value of x. The diagram is not to scale.

DiKsa [7]

Sum of interior angles in a pentagon=540°

148+112+2x+2x+10+90=540

360+4x=540

4x=540-360

4x=180

x=180/4

x=45°

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2 years ago

If Amanda walks at an average speed of 2.72 miles per hour how long will it take her to walk 6.8 miles

defon

Two and a half hours

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3 years ago

Write the sentence as an equation.<br> 62 more than the product of 150 and r is 40

Elenna [48]

Answer:

150 • r + 62 = 40

Step-by-step explanation:

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2 years ago

Calculate the simple interest rate. (Round your answer to one decimal place.)

GrogVix [38]

Answer:R = 9.1667%/year

Step-by-step explanation:

Solving our equation

r = 330 / (3600 × 1) = 0.09166667

r = 0.09166667

converting r decimal to a percentage

R = 0.09166667 × 100 = 9.1667%/year

The interest rate required to

accumulate simple interest of $330.00

from a principal of $3,600.00

over 1 years is 9.1667% per year.

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8 0

2 years ago

A heated piece of metal cools according to the function c(x) = (.5)^x − 11, where x is measured in hours. A device is added that

Goryan [66]

Answer:

The temperature of metal after five years = -18.96875

Step-by-step explanation:

Given : Function $c(x) = (0.5)^x-11$

where x is measured in hours

Another function is added h(x)=-x-3

therefore, the resultant function f(x)=h(x)+c(x)

$f(x) = (0.5)^x-11-x-3$

For x=5

$f(5) = (0.5)^5-11-5-3$

$f(5) = (0.03125)-19$

$f(5) = -18.96875$

Therefore, The temperature of metal after five years = -18.96875

5 0

3 years ago

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