Answer:
450 miles per hour
Step-by-step explanation:
Kelly flies at a distance of 2,100 miles
The time taken for the trip is 4 2/3 hours
Therefore the rate of speed can be calculated as follows
= 2,100 ÷ 4 2/3
= 2,100 ÷ 14/3
= 2100 × 3/14
= 150 × 3
= 450 miles per hour
Answer:
1 seconds after being thrown, the stone reaches its max height
Step-by-step explanation:
The parabolic (quadratic) equation is:

Lets expand this in the form
, so we have:

We can say the values of a,b, and c, now to be:
a = -5
b = 10
c = 40
The number of seconds at which the max would occur is given by the point, x, at:

We know a and b, let's find the seconds, x,

Hence,
1 seconds after being thrown, the stone reach its max height
Answer:
0.0723 cubic feet < 1 cubic foot.
Step-by-step explanation:
A cube-shaped salt lick is ordered by a rancher and the length of each salt lick is
foot.
Therefore, the side length of each salt lick of cube-shape is
foot.
So, the volume of each salt lick is
cubic feet.
Hence, this volume is less than 1 cubic foot. (Answer)
We are given this

write it as the difference of cubes

use the formula for the difference of cubes

Now use the formula for the difference of squares as 

Answer:
Step-by-step explanation:
x= -8,-11