Can someone help me with these word problems?

Mathematics

1 answer:

Jobisdone [24]3 years ago

4 0

1) $375
500 *.25= 125
500-125= 375

2) (5/8)* 32= 20 girls in class
(3/8)* 32= 12 BOYS in class

4) 19+42+X=87
62+X= 87 (add 19 and 42 together )
X=25 ( subtract 87 from 62)

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X, y - the numbers

The numbers add to 9 and multiply to -70.
$x+y=9 \\
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\hbox{substitute 9-x for y in the second equation:} \\
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Answer:

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Step-by-step explanation:

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