4x - (9 - 3x) = 8x - 1
4x - (9) - -(3x) = 8x - 1
4x - 9 + 3x = 8x - 1
7x - 9 = 8x - 1 (-8x from each side)
-x - 9 = -1 (+9 to each)
-x = 8 (divide -1 from each side)
x = -8
Answer:
i would see the number but the most likely one is C since it comes a goes and makes some sense when it looks at the same motion at this
Step-by-step explanation:
like C seema too be the right one because it looks alike the one i did a couple years back in math but yeah my pick would be (C)
Answer:
A
Step-by-step explanation:
8/(-2+2) is just 8/0 and anything divided by 0 is undefined
Answer:
2^3.3^2
Step-by-step explanation:

Answer:
A/C
Step-by-step explanation:
Since the sum of the angles in a triangle equals 180°, and angle C is 90°.
That means angles A and B add up to 90°, that is, they are complementary angles. Therefore the cosine of B equals the sine of A.
We saw on the last page that sin A was the opposite side over the hypotenuse, that is, a/c. Hence, cos B equals a/c.
Your welcome! :)