Question

Which coordinate pair is a solution to the following system? A- (0.20) B-(1,-3) C(5,5) D-(13,20

Answer 1

x=5/2, y=0 & x=5, y=5. So the answer is C).

Explanation:

2x^2-13x+20=2x-5

2x^2-13x-2x+20-(-5)=0

2x^2-15x+20+5=0

2x^2-15x+25=0

factor out the trinomial

(2x-5)(x-5)=0

zero property

2x-5=0, x-5=0

2x=0+5=5, 2x=5, x=5/2

x=0+5=5

y=2(5/2)-5=5-5=0

y=2(5)-5=10-5=5