Answer:
An angle that measures less than 90 degrees.
Step-by-step explanation:
68% of the data will be within one standard deviation of the mean, so 68% of delivery times will be at least 27-3=24 and at most 27+3=30.
He travels approximately 45 miles
The compound equation is -2<x<2 (or -1 is less than or equal to x, which is less than or equal to 1)
Answer:
.
Step-by-step explanation:
Since vertices lie on y-axis. So, it is a vertical parabola of the form
where, (h,k) is center, is focus and is vertex.
Center is (0,0). So, h=0 and k=0.
Foci are . So .
Vertices are . So .
We know that,
Put h=0,k=0, a=8 and b=3 in equation (1).
Therefore, the required equation is
.