Answer:
A
Step-by-step explanation:
The volume (V) of a pyramid is
V =
area of base × perpendicular height (h)
area of square base = 4² = 16 and h = 4, hence
V =
× 16 × 4 =
= 21
ft³
To solve this we need to use this formula:
a(b+c)=ab+ac
5(7+3x)-12=35+15x-12=15x+23
Answer:
I found the x values. Figure out the lengths by substituting the x-values!
Step-by-step explanation:
Feel free to ask if you don't understand what I'm doing here
Answer:
Answer is x= 15
Step-by-step explanation:
(3x+18)+(8x-3)=180
11x+15=180
11x=165
x=15