Ask question

Ask question

All categories

Misha Larkins [42]

3 years ago

15

When an 18-sided, regular polygon is rotated about its center, at which angle of rotation will the image of the polygon coincide

with the preimage? A. 10° B. 18° C. 24° D. 20°

1 answer:

alekssr [168]3 years ago

8 0

Answer:

D. 20

Step-by-step explanation:

Its correct.

You might be interested in

The right line is a 90° clockwise rotation of the left line about the origin. Click the 90° clockwise button. Are these lines th

nikitadnepr [17]

Answer:

Step-by-step explanation:

From the graphs attached,

Let the coordinates of the two points given on the black line in the first graph are (-4, 2) and (-1, 10).

When these points have been rotated by 90° about the origin,

Rule for the rotation will be,

(x, y) → (y, -x)

Therefore, coordinates of the image points will be,

(-4, 2) → (2, 4)

(-1, 10) → (10, 1)

Therefore, red line given given in graph (1) and black line (After rotaion of 90° clockwise) in graph (2) will be same.

4 0

3 years ago

Milan is running a race. He runs at a speed of 7 miles per hour for 11.2 miles. For how many hours does he run?

yaroslaw [1]

7miles---------1hr
11.2miles------- x
cross multiply;
11.2 × 1 = 7 × x
x= 11.2÷7
x=1.6hr

3 0

3 years ago

Simplify the following <br><br> Square root 15 / Square root 3

Elina [12.6K]

Answer:

The answer is √5 .

Step-by-step explanation:

You have to rationalize the fraction in order to get rid of surd in the denorminator by multiplying √3 to both numerator amd denorminator :

$\frac{ \sqrt{15} }{ \sqrt{3} }$

$= \frac{ \sqrt{15} }{ \sqrt{3} } \times \frac{ \sqrt{3} }{ \sqrt{3} }$

$= \frac{ \sqrt{15} \times \sqrt{3} }{ \sqrt{3} \times \sqrt{3} }$

$= \frac{ \sqrt{45} }{3}$

$= \frac{ \sqrt{9 \times 5} }{3}$

$= \frac{3 \sqrt{5} }{3}$

$= \sqrt{5}$

6 0

3 years ago

Read 2 more answers

Find the quotient.<br><br> 48j 5 k 2 ÷ (-3j 3 k)<br><br> A) -16j2k<br> B) -16j3k2<br> C) -16j3k

posledela

For this case we must find the quotient of the following expression:

$\frac {48 * j ^ 5 * k ^ 2} {- 3 * j ^ 3 * k} =$

We have to:

$\frac {48} {- 3} = - 16$

By definition of power properties we have:

$\frac {a ^ m} {a ^ n} = a ^ {m-n}$

So so:

$\frac {48 * j ^ 5 * k ^ 2} {- 3 * j ^ 3 * k} = - 16 * j ^ {5-3} * k^{2-1}=-16*j^2*k$

Answer:

Option A

3 0

3 years ago

Read 2 more answers

Select the statements that describe exponential growth.

Jlenok [28]

Answer:

the answer is B

Step-by-step explanation:

cause exponensial means like a crazy amount very quickly

3 0

3 years ago

Read 2 more answers