Answer: 1,3,4
Step-by-step explanation:
Answer: 12
Step-by-step explanation: If it was 60km in 1 hour it would 6 but since its half an hour just double the 6.
Well, the speed is 45mph (divided 270 by 6). It would take her 9 hours (divided 405 by 45).
Step-by-step explanation:
sin(2x) + cos(3x)
Use double angle formula sin(2x) = 2 sin x cos x.
Use triple angle formula cos(3x) = 4 cos³x − 3 cos x.
Substitute:
2 sin x cos x + 4 cos³x − 3 cos x
Answer:
C
Step-by-step explanation:
10/4=2.5
2.5x38=95
95 minutes= 1 hour 35 minutes
