Answer:
The correct answer is B) (x - 5)(x + 10)
Step-by-step explanation:
The constants at the end of the parenthesis need to add to the middle term
10 + -5 = 5
And they need to multiply to the end term
-5 * 10 = -50
This makes it the correct choice.
The volume of a pyramid with hight and base is 1/3 the volume of a rectangleular prisim with the same height and base
also the volume of a cone is 1/3 the volume of a cylinder with same height and base so
just fun facts to know (helpful)
so volume of cylinder=1/3 times height tiimes pi times radius^2
subsitute
use pi=3.14
height=12
radius=6
volume=1/3 times 12 times 3.14 times 6^2
volume=4 times 3.14 times 36
volume=452.16 cubic meters
the naswer is the top left choice
Answer: The first interval:0 ≤ x ≤ 20
Procedure
You have to solve this inequality
-2x^2 +40x +600 ≥ 600
-2x^2 +40x ≥ 0
-x^2+20x ≥ 0
x^2 - 20 x ≤ 0
x(x-20) ≤ 0
That is only possible if the two factors have different signs.
Let's examine the possibilities
x ≥ 0 and x -20 ≤ 0⇔x≤20, that is 0≤x≤20
The other possibility is
x ≤ 0 and x - 20 ≥ 0 ⇔x≥20. This conditions is not possible.
So the solution is 0≤x≤20
Answer: D, B, C, A
Step-by-step explanation:
A: ![4^5 = 1024](https://tex.z-dn.net/?f=4%5E5%20%3D%201024)
B: ![6^2=36](https://tex.z-dn.net/?f=6%5E2%3D36)
C: ![5^3=125](https://tex.z-dn.net/?f=5%5E3%3D125)
D: ![9](https://tex.z-dn.net/?f=9)
D, B, C, A