The commutative property does not work for which operations? check all that apply. a. b. - c. + d. x

Commutative property works for addition and multiplication

Step-by-step explanation:

A. ÷

We need to check if

Take a = 4 and b = 2

So,

Therefore, commutative property does not work for division.

B. -

Take a = 7 and b = 10

So,

Therefore, commutative property does not work for subtraction

C. +

Take a = 8 and b = 9

So,

Therefore, commutative property works for addition.

D. ×

Take

So,

Therefore,  commutative property works for multiplication.

So, commutative property works for addition and multiplication.

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