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melomori [17]
3 years ago
9

What is the volume of a sphere with a diameter of 9 in.?

Mathematics
2 answers:
N76 [4]3 years ago
7 0
R = d/2 = 9/2 = 4.5
volume of sphere = 4/3*π (r) ^3

= 4/3π(4.5)^3

= 121.5π in^3
a_sh-v [17]3 years ago
6 0
Answer: 121.5 in³

Explanation:

\textnormal{Volume }=  \cfrac{4}{3}  \pi (4.5)^3 = 121.5 \pi \ in^3
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A box contains a collection of triangular and square tiles. There are 25 tiles in the box and 84 edges . How many square tiles a
NikAS [45]
This problem here would be a little tricky. Let us take into account first the variables presented which are the following: a collection of triangular and square tiles, 25 tiles, and 84 edges. Triangles and squares are 2D in shape so they give us a variable of 3 and 4 to work on those edges. Let us say that we represent square tiles with x and triangular tiles with y. There would be two equations which look like these:

x + y = 25                    and               4x + 3y = 84

The first one would refer to the number of tiles and the second one to number of edges.

We will be using the first equation to the second equation and solve for one. So if we will be looking for y for instance, then x in the second equation would be substituted with          x = 25 - y           which would look like this:

4 (25 - y) + 3y = 84

Solve.

100 - 4y + 3y = 84
-4y +3y = 84 - 100
-y = -16
-y/-1 = -16/-1
y = 16

Then:
x = 25 -y
x = 25 - 16
x = 9

So the answer is that there are 9 square tiles and 16 triangular tiles.
4 0
3 years ago
What is the next two number in the pattern?<br><br>1,8,27,64,125,...
kenny6666 [7]
248
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6 0
3 years ago
Plsss help I need answers by today
pentagon [3]

Answer:

E, A, F

Step-by-step explanation:

3 0
2 years ago
I WILL MARK BRAINLIEST A bicycle manufacturing company makes a particular type of bike. Each child bike requires 4 hours to buil
Alona [7]

Using a system of equations, it is found that since 20 child bikes and 6 adult bikes would require more testing than the allocated time, it is not possible to build this amount.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the variables are:

  • Variable c: number of child bikes.
  • Variable a: number of adult bikes.

Each child bike requires 4 hours to build, as do each adult bike. The company has 100 hours of testing, hence:

4c + 4a = 100.

c + a = 25.

With 20 child bikes and 6 adult bikes in a week, we have that c = 20, a = 26, hence:

c + a = 26

20 child bikes and 6 adult bikes would require more testing than the allocated time, it is not possible to build this amount.

More can be learned about a system of equations at brainly.com/question/24342899

#SPJ1

4 0
1 year ago
What percent of the values are between 10 and 30? Round to the nearest tenth of a percent if necessary.
skad [1K]

Answer: 33.3%

Step-by-step explanation: I did this on saavas. also for part b the answer is 32.5.

6 0
2 years ago
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