Setting f(x) = 0, we have:
-x2 -7x +30 =0
The roots of this quadratic equation are:
x = 3 and -10
Since the diver is on a diving board, the -10 is somewhere behind him. We use the root x = 3 since this distance is in front of the board.
Therefore, the answer is:
x = 3; the diver hits the water 3 feet away horizontally from the board
Step-by-step explanation:
215÷3=71
143÷6=23.9
71+23.9+60=154.9
It would be $18.94, because the hundredths place is the penny.
The equation of the line is
.
Solution:
The points on the line are (–6, –3) and (4, –5).

Slope of the line:





Point-slope formula:




Subtract 3 from both sides of the equation.

The equation of the line is
.