Answer:
- Add 1 to both sides.
- Distribute the 4
- Subtract 8 from both sides
- Divide both sides by 12
I hope this helps!
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Find volume
vcube=side^3
side=2
vcube=2^3=8cm^3
19 grams per cm^3
19 times 8=152 grams
x = -4 or x = 2.5
Step-by-step explanation:
2x^2 + 3x - 20 = 0
(x + 4) (2x - 5) = 0
either x + 4 = 0 or 2x - 5 = 0
x = -4 or x = 2.5
Answer:
x = 96.23 if x is the area of the base
x =21 if x is the side length of the base
Step-by-step explanation:
The volume of a square pyramid is given by
V=1/3 a^ 2 h
We know the volume is 441 and the area of the base is a^2 which is x
and the height is 1/7x
Substituting these values in
441 = 1/3 (x) 1/7x
441 =1/21 x^2
Multiply each side by 21
441*21 = 21*1/21 x^2
9261 = x^2
Take the square root of each side
sqrt(9261) = sqrt(x^2)
x = 96.23
I am thinking you mean x is the side length on the base
We know the volume is 441 and the area of the base is a^2 which is x^2
and the height is 1/7x
Substituting these values in
441 = 1/3 (x^2) 1/7x
441 =1/21 x^3
Multiply each side by 21
441*21 = 21*1/21 x^3
9261 = x^3
Take the cube root of each side
(9261) ^ (1/3) = (x^3)^(1/3)
21 =x