Answer:
56.7 mi/h.
Step-by-step explanation:
I took the test
2x^2+4x-30=0
2x^2+10x-6x-30=0
2x(x+5)-6(x+5)=0
(2x-6)(x+5)=0
2x-6=0 x+5=0
x=6/2 x=-5
x=3
The GCF of 28 and 80 is 4.
<u>Distribute 4 for 28 and 80, then solve:</u>