It would be X=-5, because you add 12x to both sides and you get -7x-1=34, then you add one to both sides and you get -7x=35, after that you divide -7 and 35 and that equals -5, so then you get x=-5
Answer:
130
Step-by-step explanation:
sum of supplementary angle is 180
180-50
130
9.
By the Segment Addition Postulate, SAP, we have
XY + YZ = XZ
so
YZ = XZ - XY = 5 cm - 2 cm = 3 cm
10.
M is the midpoint of XZ=5 cm so
XM = 5 cm / 2 = 2.5 cm
11.
XY + YM = XM
YM = XM - XY = 2.5 cm - 2 cm = 0.5 cm
12.
The midpoint is just the average of the coordinate A(-3,2), B(5,-4)
![M = (A+B)/2 = \left( \dfrac{-3 + 5}{2}, \dfrac{2 + -4}{2} \right)](https://tex.z-dn.net/?f=M%20%3D%20%28A%2BB%29%2F2%20%3D%20%5Cleft%28%20%5Cdfrac%7B-3%20%2B%205%7D%7B2%7D%2C%20%5Cdfrac%7B2%20%2B%20-4%7D%7B2%7D%20%5Cright%29)
Answer: M is (1,-1)
You'll have to plot it yourself.
13.
For distances we calculate hypotenuses of a right triangle using the distnace formula or the Pythagorean Theorem.
![AB^2 =(5 - -3)^2 + (-4 - 2)^2 = 8^2 + 6^2 = 100](https://tex.z-dn.net/?f=AB%5E2%20%3D%285%20-%20-3%29%5E2%20%2B%20%28-4%20-%202%29%5E2%20%3D%208%5E2%20%2B%206%5E2%20%3D%20100)
Answer: AB=10
M is the midpoint of AB so
Answer: AM=MB=5
14.
B is the midpoint of AC. We have A(-3,2), B(5,-4)
B = (A+C)/2
2B = A + C
C = 2B - A
C = ( 2(5) - -3, 2(-4) - 2 ) = (13, -10)
Check the midpoint of AC:
(A+C)/2 = ( (-3 + 13)/2, (2 + -10)/2 ) = (5, -4) = B, good
Answer: C is (13, -10)
Again I'll leave the plotting to you.
Answer:
49:28
Step-by-step explanation:
7+4=11
77/11=7
7*7=49
4*7=28
7 is slope I am sure so go ahead and be happy