Ask question

Ask question

All categories

3 years ago

8

Can someone help me? Does the figure have rotational symmetry? If it does find the angle of rotation

2 answers:

WITCHER [35]3 years ago

5 0

Yes there is rotational symmetry and you can rotate 5 times in a complete circle.

so 360/5 = 72 degrees or C

aksik [14]3 years ago

4 0

It would be the first one, because it is rotational and the angle size isn acute so it'd be 30 degrees. You should try to read the whole lesson to actually understand what you're learning. :)

You might be interested in

Solve this for Brainliest!<br><br>See the attachment [Level - GCSE]

madreJ [45]

Answer:

$x = 3 + 4\sqrt{3}$

Step-by-step explanation:

OPQ is a right angle triangle.

<u>Using Pythagoras</u>

$x^{2} + (x+5)^{2} = (x+8)^{2}\\x^{2} + x^{2} + 10x +25 = x^{2} + 16x + 64\\x^{2} + x^{2} - x^{2} + 10x - 16x + 25 - 64 = 0\\x^{2} - 6x -39 = 0$

<u>Using quadratic formula</u>

<u /> $x = \frac{-b \± \sqrt{b^{2}-4ac}}{2a}\\x = \frac{-(-6) \± \sqrt{(-6)^{2}-4(1)(-39)}}{2(1)}\\x = \frac{6}{2} \± \frac{\sqrt{192}}{2}\\x = 3 \± \frac{8\sqrt{3}}{2}\\x = 3 \± 4\sqrt{3}$

$x = 3 + 4\sqrt{3} = 9.928(4s.f.)$

OR

$x = 3 - 4\sqrt{3} = -3.928(4s.f.)$ (Length can't be negative)

∴ $x = 3 + 4\sqrt{3}$

3 0

2 years ago

Read 2 more answers

6x+4y=12 into y=my+b

kirza4 [7]

6x + 4y = 12...subtract 6x from both sides
4y = -6x + 12 ...divide both sides by 4
(4/4)y = (-6/4)x + 12/4...reduce
y = -3/2x + 4 <== y = mx + b

7 0

3 years ago

Read 2 more answers

Check off the methods of differentiation required, and complete the derivative.

kogti [31]

Given:

$f(x)=\sqrt[]{5x^2-2}$

f(X) will be differentiated by chain rule.

$\begin{gathered} f^{\prime}(x)=\frac{1}{2\sqrt[]{5x^2-2}}\lbrack5(2x)\rbrack \\ f^{\prime}(x)=\frac{5x}{\sqrt[]{5x^2-2}} \end{gathered}$

6 0

1 year ago

in 2001 the average yearly wage was 21842 on average people spent £1644 on their family holiday what percentage of the average y

Vinil7 [7]

The percentage of the average yearly wage is 7.53%.

<h3>What are percentages?</h3>

Percentage can be described as a fraction of an amount that is usually expressed as a number out of hundred.

<h3>What is the percentage of the average yearly wage?</h3>

Percent = (amount spent on family holiday / total yearly wage) x 100

(1644 / 21842) x 100 = 7.53%

To learn more about percentages, please check: brainly.com/question/25764815

8 0

2 years ago

NO LINKS OR FILES i WILL GIVE BRAINLIEST TO WHOEVER DOES IT CORRECTLY WITH NO LINKS OR FILES

katovenus [111]

I believe it would be 10%

6 0

3 years ago

Read 2 more answers