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Mathematics 4 Online
Lura:

Plz help me with my math ;-;

Lura:

Vocaloid:

it says <A and <B are vertical angles, which means they are equal to each other. so 2x + 19 = 3x - 18. solve for x. *important* because it asks for the measure of angle A, plug x back into 2x + 19 and calculate the measure of angle A.

Lura:

plz explain how to do that

Vocaloid:

2x + 19 = 3x - 18 subtract 2x from both sides then add 18 to both sides you'll be left with x on one side and the value of x on the other side. then plug that x value back into angle A.

Lura:

so 2(37)+19??

Vocaloid:

yes

hunter3506:

Oml 1x =1 1x/1. 1/1. X=1

Lura:

bro dont needs be so mean x-x

hunter3506:

Just explaining not being mean

Lura:

ohhh k srry

hunter3506:

Ur good

Lura:

∠A and \angle B∠B are supplementary angles. If m\angle A=(2x+27)^{\circ}∠A=(2x+27) ∘ and m\angle B=(5x-1)^{\circ}∠B=(5x−1) ∘ , then find the measure of \angle A∠A.

Vocaloid:

it's a similar process, but because these are supplementary, they add up to 180 degrees. (2x + 27) + (5x - 1) = 180. once again, solve for x and plug it back into the angle A expression.

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