3 years ago

The sum of twice a number and seven is twenty five

Mathematics

1 answer:

Mama L [17]3 years ago

3 0

9

Because 9x2 is 18+7=25

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Step-by-step explanation:

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Earl has $571 in his checking account. After he writes a check to the bookstore for $285, how much is remaining in his account?

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3 years ago

Read 2 more answers

Given 2x - 9y - 12 = 0, express 5x - 4y + 7 = 0 in terms of x only

olga2289 [7]

Answer:

$4 \frac{1}{9}x$ + $12\frac{1}{3}$ = 0

Step-by-step explanation:

Based on 2x - 9y - 12 = 0

-9y = 12 - 2x

9y = -12 + 2x

y = $-1\frac{1}{3} + \frac{2}{9} x$

Therefore...

5x - 4y + 7 = 0

5x - 4( $-1\frac{1}{3} + \frac{2}{9} x$ ) + 7 = 0

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$4 \frac{1}{9}x$ + $12\frac{1}{3}$ = 0

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2 years ago

According to the line plot, what is the total weight gained by the dogs that gained 1/8 f a pound or 3/4 of a pound?

erik [133]

3 1/8

First you take the all the dogs that gained 3/4 (which is 4)
Then you multiply it by 4

3/4x4=3
Then you add the dogs that gained 1/8 of a pound

3+1/8=3 1/8

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2 years ago

A line is perpendicular to y = 1/4x- 8

postnew [5]

Answer:

perp-9xc

Step-by-step explanation:

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3 years ago