|
|
Solve
each of the following quadratic equations.
Each problem has a "hint" box
if you need help getting started. When you have
solved each problem, check your
answer by clicking the answer box. |
 |
| 1. |
Solve
for y: y2 - 81= 0
|
|
|
|
| 3. |
Solve
for x: x2 - 3x - 10 = 0
|
|
|
|
| 4. |
Solve
for y: 2y2 + 4 = 9y
|
|
|
|
On to the harder problems!
| 6. |
Solve
for x:
|
|
|
|
| 7. |
Solve
for x:
|
|
|
|
| 8. |
The
square of a number is decreased by 15. This value is twice the
original number. Find the number(s).
|
|
|
|
| 9. |
The
product of two consecutive integers is 56. Find the integers. |
|
|
|
| 10. |
During
practice, a
softball pitcher throws a ball whose height can be modeled by the
equation h = -16t 2 +
24t +1, where h = height in feet and t = time in
seconds. How long does it take for the ball to reach a height of 6
feet? |
|
|
|
| 11. |
One
leg of a right triangle exceeds the other leg by four inches. The
hypotenuse is 20 inches. Find the length of the shorter leg of the
right triangle. |
|
|
|
| 12. |
A
baseball diamond is a square whose side is 90 feet. Approximate
the distance from home plate to second base, to the nearest foot. |
|
|
|
|
