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EleoNora [17]
3 years ago
9

2x+5y=-21 , -2x+3y+-27

Mathematics
1 answer:
Elis [28]3 years ago
8 0

Answer:

x=4.5 and y=  -6

Step-by-step explanation:

2x+5y= -21

-2x+3y= -27

add the two equations: 8y= -48

y=-48/8= -6

sub for y in 2x+5y= -21

2x + 5(-6)=-21, 2x-30= -21

2x= -21+30= 9

x= 9/2=4.5

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Step-by-step explanation:

To find this, start by taking the equation for percent change

(New - Old)/Old * 100 = % Change

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3 0
4 years ago
A trapezoid has base lengths of 5 meters and 3.5 meters. If the height of the trapezoid is 4 meters, what is the area of the tra
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Answer:

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Step-by-step explanation:

A trapezoid has base lengths of 5 meters and 3.5 meters. If the height of the trapezoid is 4 meters, what is the area of the trapezoid?

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6 0
3 years ago
what is the slope of the line below? If necessary, enter your answer as a fraction in lowest terms, using the slash as the fract
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6 0
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3 years ago
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