You have two crossed lines. They form a total of 4 angles. The x and 78 are straight across from each other. When that happens, the two angles are labeled as vertically opposite angles.
Vertically opposite angles are always equal
x = 78 <<<<<<<< answer
Answer:
Its A just explan the work like 129.6/64.8x98
Answer:
2
Step-by-step explanation:
X^2 - 8x + 13 = 0
subtract 13 from both sides
x^2 - 8x = -13
-8/2 = -4, (-4)^2 = 16, add 16 to both sides
x^2 - 8x + 16 = -13 + 16
factor the left side
(x - 4)^2 = 3