Since the area of a triangle is in the form
area=0.5(base)(height)
height=base+7
let base=x
area=0.5(x)(7+x)
30=3.5x+0.5x^2
multiply the equation by 2
60=7x+x^2
subtract 60 from both sides
x^2+7x-60=0
(x-5)(x+12)=0
thus x=5 or x=-12 since we are only considering positive answers
x=-12 is rejected
so base=5 and height=5+7=12
Answer:
54 kg
Step-by-step explanation:
Total weight of 7 boys is 392 kg. And other 6 boys total weight is 338 kg.
So the 7th boy's weight is (392-338)=54 kg
The perimeter would be ≈ 36.797836892947.
Rounded would be about 37, or 36.8.
Hope this helps!!!!
Solving for P:
≈36.79784
Hope this helps!!
Answer:
5.12
Step-by-step explanation:
It's 3.59*0.7÷1 so 5.12
