Answer:
10 hours
Step-by-step explanation:
320 = 30x + 20
300 = 30x
x = 10
2x+3=7
2x+3-3=7-3
Whenever moving a number to the other side you have to change the sign .
2x= 4
x=2
Answer:
cos(O) = 39 / 89
Step-by-step explanation:
Given:
ΔOPQ, where
∠Q=90°
PO = 89
OQ = 39
QP = 80
cosine of ∠O?
cos(O) = Adjacent / Hypotenuse
cos(O) = 39 / 89
Answer:
You would have to add the expression so we know what you're talking about.
Any multiple of those numbers is equivalent though.
Step-by-step explanation:
