For a regular cube:
side length =
![s[tex] volume = [tex]s^3](https://tex.z-dn.net/?f=s%5Btex%5D%20volume%20%3D%20%5Btex%5Ds%5E3)
This problem has a lot of distributing. I suggest you use a grid to make sure each term is distributed (see attached image on how to do this)
For our problem:
side length =


(use FOIL)

Multiplying 5a(25a²+40ab+16b²) =

Multiplying 4b(25a²+40ab+16b²) =

Combine like terms. (200a²b + 100a²b = 300a²b, 80ab² + 160ab² = 240ab²)
volume = s³ =
Answer:
the formula for the volume of a square pyramid is V=a^2*h/3
so if we just put in the data
12^2*10/3
144*10/3
480
so the answer is B
Hope This Helps!!!
So it gives you the "= 210" part of it so you just need to figure out how to write "40% of a number is added to the number"
the questions already tells you that "the number" is "x"
so that means "40% of x is added to x"
instead of writing "add" you can replace it with a plus sign "+"
(40% of x) + x
another way to write 40% of x is 0.40x
so your equation is .4x + x = 210
Answer:
the first one.
Step-by-step explanation:
DJ and decorations are one time flat costs. they are constant. so, together, they are $300.
that is what decreases the profit.
on the other side, $5 per student = 5n in total increases our profit.
so, in total the sum of both (the decreasing amount has a negative sign, if course) :
5n - 300 = 1,500
is the right equation to calculate how many students are needed to make that much profit.
the solution, but the way :
5n - 300 = 1500
5n = 1800
n = 1800/5 = 360 students
Answer:
The question mark is 10. x is 2.
Step-by-step explanation:
The question mark is 10. Divide Both Sides by five. x=2.