Okay i need to know first is this math or physics ? Cz everyone has a different solution
Answer:
Step-by-step explanation:
Find the area of each shape, then multiply by 20, then round to nearest hundred.
Half circle:
=πr²/2
=50π
=157.08
Large square:
=L•w
=20(22)
=440
Small square:
=L(w)
=12(3)
=36
Triangle:
=b(h)/2
=8(3)/2
=12
Btu req:
=(157.08+440+36+12)(20)
=(645.08)(20)
=12901.6
=12900 BTU
Ans given below
-3r-12=-21
-3r=-21+12
-3r=-9
r=-9\-3
r=3
Answer:
Y= 1/2x+2
Step-by-step explanation:
I believe it should be A.