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Llana [10]
2 years ago
5

a copy machine can print 810 copies every 9 minutes. A laser printer printed 1,350 copies. How long did it take to print?

Mathematics
2 answers:
Gre4nikov [31]2 years ago
5 0

Answer:

15

Step-by-step explanation: You would think 15. 810 copies every 9, minutes. Nine divided by 810 equals 90. 90 copies every minute. 1,350 divided by 90 is fifteen. =fifteen.

labwork [276]2 years ago
3 0
810 / 9 = 1350 / x amount of minutes (cross-multiply)

x = 15 minutes
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Answer:

B - y = 2x - 8

Step-by-step explanation:

Step 1: find slope

2x + 4y = 6

4y = -2x + 6

Make y the subject of the formula

y =( -2x + 6)/4

We can separate to get the slope

y = -2x/4 + 6/4

y = -x/2 + 3/2

Slope m = -1/2

Step 2: using a point slope form equation

y - y1 = m ( x - x1)

Note: if two lines are perpendicular to the other, it is always a negative reciprocal of each other

ie m = 2

Substitute m into the equation

y - y1 = 2(x - x1)

Step 3: sub the point

( 6 , 4)

x1 = 6

y1 = 4

y - 4 = 2( x - 6)

Step 4 : using a slope intercept form equation

Open the bracket

y - 4 = 2x - 12

y = 2x - 12 + 4

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The equation of a line is

y = 2x - 8

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3 years ago
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Answer:

Step-by-step explanation:

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at the end of his shift, Bruno had $340 worth of tips all in $10 and $20 bills .if he had two more $20 bills than $10 bill .how
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Angie and Becky each completed a separate proof to show that the measures of vertical angles AKG and HKB are equal. Who complete
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Answer:

Becky, because her justification for the second statement should be "definition of supplementary angles" rather than "angle addition postulate."

Step-by-step explanation:

Becky completed the proof incorrectly because her justification for the second statement is not totally correct.

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2 years ago
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