Which of the following are identities? Check all that apply.
I
A. sin 6x=2 sin 3x cos3x
| sin3x - sirik = tang
CDs3x + CD5X
C.
sin 3x
2 = 4 CŨsX - SECX
sin XCOS X
D. (sinx + cos x) = 1 + sin 2x

Solve the system of equations. y= 2x y= x^2 - 15

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

Consider the following equation -167 + 37 = 49 - 21p select the equation that has the same solution as the given equation. o a. p - 5 + ip = 7 - p ob. +55 + 12p = 5p + 16 c. 2 + 1.25p = -3.75p + 10 d. -14 + 6p = -9 - 6p reset next