Some students were making golf ball catapults. The flight of the ball is modeled by the equation y=-0.014x^2+0.68x, where x is time in seconds. When will the ball reach it's maximum height?
What is 24.29 seconds.
200
x^2-10x+24=0
What is (x-6)(x-4)
x=6,4
200
5r^2-80=0
What is +/-4
200
6x^2-13x-28=0
What is -4/3, 3.5
200
Some students were making golf ball catapults. The equation d=-0.014x^2+0.68x models the flight of the ball where d is distance above the ground and x is time in seconds. What is the maximum height the ball will reach?
What is 8.26 feet.
300
x^2-196=0
What is (x-14)(x+14)
+/-14
300
2x^2-x-36=0
What is 9/2, -4
300
4x^2+27x+12=0
What is -.48, -6.27
300
A projectile is shot into the air with an initial velocity of 92 ft/s. Its distance d in feet after t seconds is given by the equations d=-16t+92t. How long does it take before it reaches its maximum height?
What is 2.87 seconds
400
x^2+10x+9=0
What is (x+9)(x+1)
x=-9, -1
400
x^2+2x-3=0
What is 1, -3
400
x^2+24x+10
What is -23.58, -.42
400
A projectile is shot into the air with an initial velocity of 92 ft/s. Its distance d in feet after t seconds is given by the equations d=-16t+92t. What is the maximum height of the object?
What is 132.25 feet.
500
x^2+x-12=0(x+4)(x-3)
x=-4, 3
What is (x+4)(x-3)
x=-4, 3
500
2m^2-7m-3=0
What is 3.89, -.39
500
x^2+2x+10=0
What is complex/non real solution
500
A projectile is shot into the air with an initial velocity of 92 ft/s. Its distance d in feet after t seconds is given by the equations d=-16t+92t. How long does it take for the projectile to hit the ground?