Answer:
the 3rd one
Step-by-step explanation:
20+17=37
-1/2+(-5/2)= -3
so 37 + ( -3 ) = -3 + 37 have the same value which is 34
62%
of 25
'of' means multiplication.
![\sf 62\%\times 25](https://tex.z-dn.net/?f=%5Csf%2062%5C%25%5Ctimes%2025)
Convert 62% to a decimal, divide it by 100(since percentages are parts of 100):
62/100 = 0.62
![\sf 0.62\times 25](https://tex.z-dn.net/?f=%5Csf%200.62%5Ctimes%2025)
Multiply:
Find X:
38=(3x+4)+(5x-6)
combine like terms
38=8x-2
add 2 to both sides
40=8x
divide both sides by 8
5=x
Find AB:
16=3x+4
subtract 4 from both sides
12=3x
divide by 3
4=x
Find BC:
16=5x-6
add 6 to both sides
22=5x
divide both sides by 5