Hi there!

We can see this by writing the factors as multipliers. We get the following:


Now we can see that the terms that are in common are 3 and a, and therefore we can bring those outside the parenthesis.
Answer:
53°
Step-by-step explanation:
x + (2x + 21) = 180
(Corresponding angles &
Supplementary angles)
3x + 21 = 180
3x = 159
x = 53°
Answer:
135 square feet
Step-by-step explanation:
area of base and top=2(1/2×6×2.5)=15 square feet.
area of three faces=(2.5+6+6.5)×8=15×8=120 ft
total surface area=15+120=135 square feet.
Answer:
for apex the answer is -6
Step-by-step explanation:
Distributive property, since 3(2x) you distribute and get 6x