Answer:
cosx = sqrt(15)/4, -sqrt(15)/4
Step-by-step explanation:
cos²x = 1 - sin²sin x
cos²x = 1 - (1/4)²
cos²x = 15/16
cosx = sqrt(15)/4, -sqrt(15)/4
Answer:
It's C
Step-by-step explanation:
Ex. y = 9x
x = 2
y = 18
:)
We can round the check up to $20
15% of 20
= 0.15 x 20 = $3
The tip is about $3
Answer:
2x+12=64; x=26
Step-by-step explanation:
2x+12=64
2x=52
x=26
