9514 1404 393
Answer:
x = -7, x = 9
Step-by-step explanation:
We presume your equation is ...
x² -2x -63 = 0
Factors of -63 that have a sum of -2 are -9 and +7. Then the factored equation is ...
(x -9)(x +7) = 0
Solutions make the factors zero.
x -9 = 0 ⇒ x = 9
x +7 = 0 ⇒ x = -7
The solutions to the quadratic equation are x = -7 and x = 9.
Answer:
The correct answers on edg are 2) AE and CE are always equal 3) BE and DE are always equal 4) Segment AC and segment BD always bisect each other
Step-by-step explanation:
47 1/2 divided by 50 1/3
= 95/2 …………. 151/3
= 95/2 times by 3/151
= 285/302 of an hour.
0.9437 as a decimal.
Which is 56.6 minutes.
Answer:
A
Step-by-step explanation:
∠ AOC = 90° and
∠ AOB + ∠ BOC = ∠ AOC , that is
x + 8 + 2x = 90
3x + 8 = 90 ( subtract 8 from both sides )
3x = 82 ( divide both sides by 3 )
x =
Then
∠ BOC = 2x = 2 × = ≈ 54.67° ( to 2 dec. places )