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xenn [34]
3 years ago
11

X-2y=4. -3x+5y=-3. solving linear systems using multiplication and addition show your work

Mathematics
1 answer:
mote1985 [20]3 years ago
5 0
-3x+5y=-3
3x -6y= 12
Multiplied the first equation by 3 so the x's will cancel.
Adding the two equations we get
-y=9
y=-9
Now plug y back in to either equation and solve for x. x-2(-9)=4
x+18=4
x=-14
(-14,-9)
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Two airplanes, which start 3{,}3003,3003, comma, 300 miles apart, fly toward each other. The two planes fly at a constant speed,
castortr0y [4]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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2 years ago
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Which of these sets of angle measures could be the three angles in a triangle?
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Answer:

Okay so this is simple addition, once you know how to do it. 

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A. - 90+42+58=190

B. - 60+60+60=180

C. - 100+48+42=190

D. - 31+75+70=176

Out of these choices the only one that adds up to 180 is B. So your answer would be B. 

Read more on Brainly.com - brainly.com/question/2547568#readmore

Step-by-step explanation:

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