R-7=7 add the seven from both sides, leaving the r alone, because this is what you are trying to find. Thus the answer is r=14.
Answer:
2(2y+9)
Step-by-step explanation:
6y+10-2y+8
4y+18
2(2y+9)
hope it helps.
just sitting here waiting for brainliest.
Answer:
i got 275.664
Step-by-step explanation:
Csc x · sec x - tan x =
= 1 / sin x · 1 / cos x - sin x / cos x =
= 1 / sinx cos x - sin² x / sin x cos x =
= ( 1 - sin² x ) / (sin x cos x) =
= cos² x / ( sin x cos x ) =
= cos x / sin x = cot x
