At an archery range each shot cost 20c.if you hit the target you receive 30c.Emma has 20 shots and make aloss of 70c.how many hits did she get
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0
Answer:
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Answered by
0
Answer:
11
=x+y=20//
=x=20-y
=-20x-10y=-70
=-20(20-y)-10y=-70
=-400-20y-10y=-70
=-400-30y=-70
=30y=-70+400
30y=330
y=330÷30
y=11
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