8. Because when you add or subtract a negative it’s always the other way around.
X(t) = 1/2sin t + cos (2t)
speed = x'(t) = 1/2cos t - 2sin(2t)
acceleration = x''(t) = -1/2sin t - 4cos(2t)
When t = pi/2,
acceleration = -1/2sin(pi/2) - 4cos(pi) = -1/2 - 4(-1) = -1/2 + 4 = 3 1/2 = 7/2 m/s^2
I think its 4.8 miles, dont hold me to that though
Answer:
4
Step-by-step explanation:
A=ch
then,
2ft×2ft
4ft
If two angles are congruent, then the angles are right angles.