Step-by-step explanation:
the correct formula for this is the heron's formula
which states that s=√s(s-a)(s-b)(s-c). Where s is a+b+c all divided by 2
s=√(13.5-12)(13.5-9)(13.5-6)
s=√(1.5)(4.5)(7.5)
s=√50.625
s= 7.11 or 7 to the nearest square unit
C.
√8+3√2+√32=2√2+3√2+4√2=9√2
Dude, this is simple addition. 28.35 + 17.26 = 45.61
He now has $45.61
Answer:
5(x+3)........ ...........
If u have 4\3 and 4\5 u add 4+4=8 and then do 5+3=8 and now you have 8\8 and that is how to add ixed fractions