Ask question

Ask question

All categories

3 years ago

5

A regular dodecagon (12 sided polygon) is rotated n degrees about it's center, carrying the dodecagon onto itself. What is the m

inimum number of degrees it must be rotated to carry the dodecagon onto itself? *
A. 30 degrees
B. 15 degrees
C. 60 degrees
D. 90 degrees
Which one?

1 answer:

mojhsa [17]3 years ago

7 0

Answer:

30 degrees

Step-by-step explanation:

You might be interested in

Which question is a statistics question that anticipates variability

vlabodo [156]

Porpawnąodopwideząi topy tanie est ojdpowediź cna

8 0

3 years ago

Read 2 more answers

7 less than three times the sum of a number and five

Evgen [1.6K]

<u>Expression Form</u>
(3-7)*n+5
n=Unknown Number

4 0

3 years ago

I need an answer QUICK

denpristay [2]

I believe it would be 264

3 0

3 years ago

When a cylindrical tank is filled with water at a rate of 22 cubic meters per hour, the level of water in the tank rises at a ra

Sergeu [11.5K]

Answer:

$r=\sqrt{10}\text{ m}$

Step-by-step explanation:

We have been given that when a cylindrical tank is filled with water at a rate of 22 cubic meters per hour, the level of water in the tank rises at a rate of 0.7 meters per hour. We are asked to find the approximate radius of tank in meters.

We will use volume of cylinder formula to solve our given problem as:

$V=\pi r^2h$ , where,

r = Radius,

h = Height of cylinder.

Since the level of water in the tank rises at a rate of 0.7 meters per hour, so height of cylinder would be $h = 0.7$ meters at $V=22\text{ m}^3$ .

Upon substituting these values in above formula, we will get:

$22\text{ m}^3=\frac{22}{7}\cdot r^2(0.7\text{ m})$

$22\text{ m}^3=\frac{22}{10}\cdot r^2\text{ m}$

$\frac{10}{22}\cdot\frac{22\text{ m}^3}{\text{m}}=r^2$

$r^2=\frac{10}{22}\cdot\frac{22\text{ m}^3}{\text{m}}$

$r^2=10\text{ m}^2$

Now, we will take positive square root of both sides as radius cannot be negative.

$\sqrt{r^2}=\sqrt{10\text{ m}^2}$

$r=\sqrt{10}\text{ m}$

Therefore, radius of tank would be approximately square root of 10 m.

5 0

3 years ago

The weight of a product is normally distributed with a mean of four ounces and a variance of .25 "squared ounces." The company w

pychu [463]

Answer:

Weight=2.835

Step-by-step explanation:

See the attached picture for explanation.

8 0

3 years ago