All categories

3 years ago

HElp please need help on some homework

Mathematics

2 answers:

nlexa [21]3 years ago

5 0

Answer:

b) 216y^9

Step-by-step explanation:

Sophie [7]3 years ago

3 0

Answer:

216y^9

Step-by-step explanation:

You might be interested in

Match the equation with the step needed to solve it.

Harman [31]

1 subtract 1 2m - 1 = 3m
2 subtract 2 2m = 1 + m 
3 subtract m m - 1 = 2 
4 add 2 + m = 3 
5 subtract 2m -2 + m = 1 
6 add 1 3 = 1 + m
1.5.
2.4
3.1
42
56
63

3 0

3 years ago

a square has a perimeter of 72 units. if its length measures 3y and its width measures 2x, what is the area of the square

erastova [34]

Answer:

324

Step-by-step explanation:

square has 4 sides.

perimeter adds all sides to make 72

72/4=18 units each side

length * width =area of square

square has all sides equal, so 3y and 2x are tricks to confuse. All sides are 18.

18*18= 324

8 0

3 years ago

Yeah another one ha ha

boyakko [2]

Answer:

16.75 cubic inches

Step-by-step explanation:

Key skills needed: Volume of a cylinder, Volume of a sphere

1) To get the answer to this problem, you need to understand two formulas: The volume of a sphere, and The volume of a cylinder.

Volume of a sphere --> $V= \frac{4}{3}\pi r^3$ (V = volume, and r = radius)
Volume of a cylinder --> $V = \pi r^2h$ (V = volume, r = radius,h = height)

These formulas will be needed.

2) In order to solve this problem, we need to find the volumes of both, and the subtract them from one another to find the difference.

3) Let's start by finding the volumes:

Cylinder --> $V = \pi r^2h$

We have the radius (which is 2) and the height (which is 4)

This means we can solve --> $V = \pi(2^2)(4)$

2 squared is 4, so then it would be --> $V = \pi (4)(4)$
4 times 4 is 16 so $V = 16\pi$ ---> 16 pi is the same as 50.24 cubic inches (if you use 3.14 as pi).
Next is the Sphere--> $V = \frac{4}{3}\pi r^3$

We have the radius (which is 2) so we can solve

$V = \frac{4}{3}\pi (2^3)$
2 cubed is 8, so it would be --> $V = \frac{4}{3}\pi (8)$
8 times 4/3 is 32/3 so --> $V = \frac{32}{3}\pi$ --> which is Around 33.51 cubic inches