Answer:
I think it should be the 1st one
Step-by-step explanation:
sorry if it is wrong hope it helps
5 (2f+3)=2(5f-1)
10f+15=10f-2
10f-10f=-2-15
f=-17
8/4 should work, because the numerator's higher than the denominator.
Wa=0.5Wb, Ha=20, Hb is unkown
the area of rectangle a is : Wa*20
the area of rectangle b is : Wb*Hb
Rectangle a has 7 times the area of rectangle b: Wa*20=7*Wb*Hb
Replace Wa with 0.5Wb: 0.5Wb*20=7Wb*Hb => Hb=10/7
Answer:
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