Answer:
x=50
Step-by-step explanation:
This is a vertical angle, so the angle on top and the bottom are equal
[2(x+10)]=3x-30
2(x+10)=3x-30
2x+20=3x-30
50=x
Answer:
42 and 138
Step-by-step explanation:
Supplementary angle mean that the sum of both angle will be 180 degrees. If the angle is X and Y the equation will be:
x + y = 180
x= 180-y
If three times the measure of one angle(X) is 12 degrees less than the measure of the other(Y), the equation will be
3x= y-12
If you insert first equation to second equation, you can find out:
3x= y-12
3(180-y)= y-12
540-3y= y-12
540+12= y+3y
552= 4y
y= 138
x=180- y
x= 180-138
x= 42
Answer:
Your question is VERY hard to read so I'm gonna take the points and go..
Answer:
D.She did not keep the order of the points the same in the numerator
and the denominator
Step-by-step explanation:
Slope of a line is given as
Here we can see that the order of the points to be taken are in the same in numerator and the denominator
our student found the slope of the line between (8, 17) and (1, 4). and She wrote
Hence we can see that the order is not the same . It should be
Hence our answer is D.