Step Justification
3
Identify the missing justifications.
2x - 7 = 15
Given
2x + 7 + 7 = 15 + 7
Addition property of
equality
(b) =
2x + 0 = 22
(a)
DONE
2x = 22
Additive identity
(C)2 = ()2
(b)
1.x = 11
Multiplicative inverse
x= 11
Multiplicative identity

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.