Answer:
16
Step-by-step explanation:
20 + 16=36 36x2=72
150-4[3+9/4-1*(14-11)^2]
150-4[12/3*(3)^2]
150-4[4*3^2]
150-4[4*9]
150-4*36
150-144
6
(I think)
Answer:
A. 3 < t < 9
Step-by-step explanation:
When the particle is moving to the right, the velocity is positive.
To find the velocity, take the derivative of s(t) with respect to t.
s(t) = -t³/3 + 13t²/2 − 30t
s'(t) = -t² + 13t − 30
Find when the velocity is 0.
0 = -t² + 13t − 30
0 = t² − 13t + 30
0 = (t − 3) (t − 10)
t = 3, 10
Check the sign of s'(t) in each interval.
0 < t < 3, s'(t) < 0
3 < t < 9, s'(t) > 0
The particle moves to the right when 3 < t < 9.
Use the Pythagorean Theorem (which is only true for right triangles)
a^2 + b^2 = c^2
where
a = 25
b = 312
and c = 313
25^2 + 312^2 = 313^2
625 + 973244 = 97969
97969 = 97969
this is a true statement
therefore your ramp Is indeed a Right Triangle
7+7=14
Hope this helps!! <3
