Answer:
the answer is C
Step-by-step explanation:
Because no one cares and your question makes no sense.
Answer:

Step-by-step explanation:

Multiply both sides by 4:


Divide both sides by 3:


Answer:
x = 15
Step-by-step explanation:
Assuming 3x and x-60 are in degrees, you can use:
cos(a) = sin(a+90)
To rewrite the equation as:
sin(3x) = sin(x-60+90)
sin(3x) = sin(x+30)
3x = x+30
2x = 30
x = 15
But, solving 3x = x+30 which simplifies to x=15 is not the only solution to this equation, as you can see in below picture. Finding all solutions is a bit more work, but maybe that is not required in your case.
Answer:
See below
Step-by-step explanation:
5) y = x + 7
6) y = -x + 1