PLS HELP ASAP WILL GIVE BRAINLIEST Look at the figure below:
If sin y° = 9/c and tan y° = 9/d, what is the value of cos y°?

Step-by-step explanation:

Given:

We know that

Solving for cos y°, by substituting values:

the answer to your question is d/c

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.

b. f(x) = –√x + 3this is the correct answer