Problem 1
The two angles 6x and 30 are vertical angles, so they are congruent or the same in measure.
6x = 30
x = 30/6
x = 5 is the answer
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Problem 2
The two angles form a straight angle which is 180 degrees. We consider them a linear pair (since they are adjacent and supplementary).
So,
5x+(3x+12) = 180
8x+12 = 180
8x = 180-12
8x = 168
x = 168/8
x = 21 is the answer
Divide 50 and 20 and you get 2.5 then multiply that with 8 and you’ll get 20
THE ANSWER IS 20
Answer:
The girl which read 3/6 of a chapter book read more pages than the other girl.
Step-by-step explanation:
We need to compare between
so, the denominator of both fractions should be the same number
Factor of 6 = 1 * 2 * * 3
Factor of 8 = 1 * 2 * 2 * 2
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The common denominator = 1 * 2 * 2 * 2 * 3 = 24

Then compare between 
So, the fraction of the great numerator will be the great fraction

∴ 
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<u>Another solution:</u>
Convert both fractions to decimal:
3/8 = 0.375
3/6 = 0.5
0.5 > 0.375
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<u>Third Solution: </u>
As the numerators are equal
The fraction of least denominator is the great fraction
So, 3/6 > 3/8
Answer:
6. -200+75= -125
7. -40+-17= -57
8. 6+-9= -3+7=4+-5= -1
5+3=8+-6= 2
11+-12= -1+-3= -4+4=0
Correct answer: Cory goes first
Step-by-step explanation: