Solve x2 + 8x + 22 = 0 by completing the square.
1 answer:
Answer:
A)
Step-by-step explanation:
the solution of a squared equation is
x = (-b ± sqrt(b² - 4ac)) / (2a)
in our case
a = 1
b = 8
c = 22
x = (-8 ± sqrt(64 - 88))/2 = (-8 ± sqrt(-24))/2 =
= (-8 ± sqrt(4×-6))/2 = (-8 ± 2×sqrt(-6))/2 =
= -4 ± sqrt(-6) = -4 ± i×sqrt(6)
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Here is my answer = B draw a diagram
Answer:
102
Step-by-step explanation:
Since 2 + 8 = 10, then the cube root of 5x+2 = 8
Since 8×8×8=512, then 5x+2=512
5x=510, so x=102
That is a G major. The hashtag means major and it is located on the in the middle of he top line.
Answer:
Step-by-step explanation:
<u>Use the law of sines:</u>
- AC / sin B = AB / sin C
- 100 / sin B = 250 / sin 95°
- sin ∠B = 100 sin 95° / 250
- sin ∠B = 0.39847787923
- m∠B = arcsin 0.39847787923
- m∠B = 23.5° (rounded up)
