3 years ago

Which figures have rotation symmetry? Select each correct answer

Mathematics

1 answer:

goblinko [34]3 years ago

8 0

Answer:

The both on the right are the correct answers

Step-by-step explanation:

This is because rotational symmetry is defined as the property a shape has when it looks the same after some rotation by partial turns.

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damaskus [11]

Answer:

4(3x+5)(x-2)

Step-by-step explanation:

$12x^2-4x-40\\\\\mathrm{Factor\:out\:common\:term\:}4:\\\quad 4\left(3x^2-x-10\right)\\\\\mathrm{Factor}\:3x^2-x-10:\quad \left(3x+5\right)\left(x-2\right)\\\\=4\left(3x+5\right)\left(x-2\right)$

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3 years ago

In the diagram below, if<br> AEB=50°, find the measure of<br> DEC.

skelet666 [1.2K]

Answer:

DEC = 50

Step-by-step explanation:

AEB and DEC are vertical angles and vertical angles are equal

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3 years ago

Read 2 more answers

How do you solve this?

Naddika [18.5K]

$\dfrac{3+4i}{2+i}=\dfrac{(3+4i)(2-i)}{(2+i)(2-i)^{(*)}}=\dfrac{3\cdot2-3\cdot i+4i\cdot2-4i\cdot i}{2^2-i^2^{(**)}}\\\\=\dfrac{6-3i+8i+4}{4-(-1)}}=\dfrac{10+5i}{4+1}=\dfrac{10+5i}{5}=\dfrac{10}{5}+\dfrac{5i}{5}=\boxed{2+i}\to \boxed{a=2}\\\\used:\\(*)\ (a+b)(a-b)=a^2-b^2\\(**)\ i^2=-1$

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4 years ago

At a carnival Tom bought 27 tickets. If he used 9 tickets trying to win the ring toss game, what is the ratio of tickets he has

Triss [41]

2/3. He has 18/27 tickets after he used 9. 18/27 = 2/3

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4 years ago

If 5 (3x - 7) = 20 what is 6x - 8

garri49 [273]

You would have to solve for x the plug in the answer for c into the next equation to find your answer

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