froyg1234
14.03.2020 •
Mathematics
If a coin is flipped 4 times how many different ways are there to get 4 heads?
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Ответ:
x=−8 and y=−4
Step-by-step explanation:
8x−17y=4;−8x+15y=4
add eqn1 and 2
to eliminate x
you will get y=-4
put it zin eqn 1
x=-8