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3 years ago

NEED HELP FAST!!!!!!!!!!!

Mathematics

1 answer:

erica [24]3 years ago

7 0

Answer:a=3/4

b=3/4

Step-by-step explanation:

3a+5b=6

9a+7b=12

-3(3a+5b)=-3(6)

9a+7b=12

-9a-15b=-18

9a+7b=12

-8b=-6

b=3/4

3a+5(3/4)=6

3a+15/4=6

3a=9/4

a=3/4

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5% did not pass inspection

Step-by-step explanation:

Given

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Required

Determine the percentage of parts that didn't pass inspection.

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