What is the value of x?

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(3x-3)° = [6(x-10)]° (vertically opposite angles)

3x-3° = 6x-60°

3x-3°+3° = 6x-60°+3°

3x = 6x-63°

3x-6x = 6x-6x-63°

-3x = -63°

-3x÷(-3) = -63°÷(-3)

x = 21°

Thank you.

BY GERALD GREAT.

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

answer: the center is the median and/or mean of the data. the spread is the range of the data. and, the shape describes the type of graph. the four ways to describe shape are whether it is symmetric, how many peaks it has, if it is skewed to the left or right, and whether it is uniform. good luck

step-by-step explanation: