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mestny [16]

3 years ago

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Mathematics

1 answer:

Annette [7]3 years ago

6 0

28 + 7x = 16
7x = 16-28=-12
x = -12/7 Answer

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A plane flies an average of 325 miles per hour for 7 hours. how many miles was the flight?

irakobra [83]

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325 x 7 = 2275.
therefore the flight for 7 hours was 2275 miles.

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AnnZ [28]

Answer:

Kameryn will have more words typed than Joe when the number of minutes exceeds 34.

Step-by-step explanation:

Let

x -----> the number of minutes

y ----> the total words typed

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Kameryn

$y=75x$ -----> equation A

Joe

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Solve the system of equations by substitution

Substitute equation A in equation B and solve for x

$75x=60x+510$

$75x-60x=510$

$15x=510$

$x=34\ minutes$

That means

For x=34 minutes

The amount of words written by Kameryn and Joe are the same.

therefore

For x > 34 minutes

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3 years ago

X varies directly with y. If x is 16 when y is 20, find x when y is 80.

Taya2010 [7]

Answer:

Step-by-step explanation:

16/20 reduces down to 2/5

set 2/5=x/80

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