Answer:
a = -1
Step-by-step explanation:
The line of symmetry for the parabola given by ...
y = ax² +bx +c
is
x = -b/(2a)
Using the given values, we have ...
-2 = -(-4)/(2a)
Multiplying by -a/2, we get ...
a = (4/2)(-1/2) = -1
The value of "a" is -1.
C
The slope of a displacement-time graph gives the velocity. If the slope is positive, it shows that the person or object is moving away from the reference or the starting point (in this case Lisa’s the reference point is her home as she’s going from home —> school and back). If the slope is negative, the body is coming to the initial point. In this case, In Part C we see that the slope is negative showing Lisa is coming back home
Answer:
1/6
Step-by-step explanation:
there is only one side in which there is 3 out of total six sides so 1/6