Answer:
56
Step-by-step explanation:
Answer:
No
Step-by-step explanation:
1. Plug the values into the equation: 
2. Expand the inequality: 
3. Determine if true/false.
4x=21-1
4x=20
x=5 is the correct rounded answer
Since t is from 0 to 1 second, the time length is 1 second total.
replace t in the given equation with 1 and solve for x:
x = 4 cos(PI x 1 + PI/4)
X = 4cos(PI + PI/4)
x = 4cos(5PI/4)
x = 4(-cos(PI/4))
x = -2√2
Answer:
the second one is correct.
Step-by-step explanation: