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3 years ago

6

alex worked at the library 4 hours each night for 20 nights. he earned a total of $640. how much did he earn per hour working at

the library?

1 answer:

bazaltina [42]3 years ago

4 0

He earned $8 an hour. I hope this helped!

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F (x) =2x -4; find f (-4)

NemiM [27]

Answer:

f(-4) = -12

Step-by-step explanation:

$f(x)=2x-4$

To calculate f(-4), we need to substitute x in our equation above with -4:

$f(x)=2x-4\\f(-4) = 2*(-4) - 4\\f(-4) = -8-4 = -12$

Note that 2*(-4) = -8

Answer: f(-4) = -12

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3 years ago

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vladimir2022 [97]

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3 years ago

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Igoryamba

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Mr. Park paid $85.00 for 4 shirts. Each shirt cost the same amount. What was the cost of each shirt in dollars and cents?

yaroslaw [1]

Answer:

I think you're supposed to do 85/4

Step-by-step explanation:

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2 years ago

9.9 ft 7.2 ft The figure above shows a movie screen with dimensions shown in feet. What is the length of the diagonal of the scr

Temka [501]

Answer:

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use the Pythagorean theorem to determine the diagonal

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