The sum of the angle measures in a triangle is 180. The angles of a

Mathematics

2 answers:

Ipatiy [6.2K]3 years ago

5 0

Answer:

20, 40, and 120

Step-by-step explanation:

x, 2x, and 6x have one thing in common: X. X is the same number throughout so if we find x we can just finish the equation by multiplying x by its coefficient.

x+2x+6x = 180. (Sum of angle measures)

9x = 180 (Add up the left side)

9x/9 = 180/9 (Divide both sides by 9 to cancel out the 9 and leave the x)

x = 20

Now we know what x is so:

Angle 1 = 20. (We know x is 20, so that one is easy.)

Angle 2 = 40 (Simply 2*x or 2*20)

Angle 3 = 120 (Simply 6*x or 6*20)

Lera25 [3.4K]3 years ago

3 0

It’s is 20,40 and 120

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A)
The vertex can be determined using the completing square method.
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fomenos

Answer:

a. reflection over y axis, then reflection over x-axis

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Step-by-step explanation:

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Thanks for any help provided to me! :3