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tiny-mole [99]
4 years ago
10

Solve each system using substitution. -x^2-x+19=y X=y+80

Mathematics
1 answer:
Softa [21]4 years ago
8 0
sub <span> </span> since -x^2+x+19=y <span> </span> x=-x^2+x+19+80 <span> </span> x=-x^2+x+99 <span> </span> 0=-x^2+99 <span> </span> x^2=99 x=3√11

x=y+80
3√11=y+80
minus 80 both sides
-80+3√11=y

x=3√11
y=-80+3√11


solution
(x,y)
(3√11,-80+3√11)
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