Answer:
As Given, x+y=w+z
To Prove: AOB is a line or x+y=180
∘
(linear pair.)
According to the question,
x+y+w+z=360
∘
∣ Angles around a point.
(x+y)+(w+z)=360
∘
(x+y)+(x+y)=360
∘
∣ Given x+y=w+z
2(x+y)=360
∘
(x+y)=180
∘
Hence, x+y makes a linear pair.
Therefore, AOB is a straight line
Answer:

Step-by-step explanation:
times in the y+9 and y+7 and get y squared + 16x+ 63+80.
Answer:
D. The mean will shift to the left.
Because if they sell lower priced cars it will bring the average price down causing the mean to move to the left
Answer: 1014.2
Step-by-step explanation: you look to the right of 1 and if it is 5 or greater you round up. If it is 4 or less you keep it the same number as it is.
Answer:
2 • (x2 - 2y)
Step-by-step explanation:
Step 1 :
Equation at the end of step 1 :
2x2 - 4y
Step 2 : See below
Step 3 : See below
Pulling out like terms :
3.1 Pull out like factors :
Answer: 2 • (x2 - 2y)
<em><u>Hope this helps.</u></em>