Answer:
x = 0
Step-by-step explanation:
The axis of the symmetry has the same x coordinate of the vertex
V (x) = -b/2a
in both equations b is equal to 0 and a 0/a number different from 0 gives always 0 as a result
Answer:

Step-by-step explanation:
Given

Required
The sample mean
This is calculated using:

So, we have:



Answer:
-300
Step-by-step explanation:
z = -21/0.07
z = -300
Answer:
Acceleration: 2.2 m/s^2
Step-by-step explanation:
F=M/A
7.92/ 3.6
2.2.