Answer:
Step-by-step explanation:
- 9x² - 25 = 0
- 9x² = 25
- x² = 25/9
- x = √25/9
- x = ± 5/3
Correct choice is A
Answer:
volume= 251.327 cubic inches
Answer:
225 square centimeters
Step-by-step explanation:
C is false because 30 is both divisible by 5 (30/5=6) and 10 (30/10=3) and is also divisible by 6 since 6*5 is 30
The volume of a Cube/Rectangular Prism is Length times Width times Height, (or for short L*w*h).
For a cube, the length, width, and height are equal. So the volume of a cube is L*L*L
In the question it says that the you know the length of one of the cubes sides, which is (x + 5).
So L = (x + 5).
So, the unsimplified expression is:
L * L * L
= (x + 5) (x + 5) (x + 5)
= (x^2 + 10x + 25)(x + 5)
= x^3 + 10x^2 + 25x + 5x^2 + 50x + 125
= x^3 + 15x^2 + 75x + 125
