Square roots
Solve for x
x2=81
+9 and -9
How do you know what a, b, and c are in the quadratic formula?
ax2+bx+c=0
a is in front of x2
b is in front of x
c is alone
What are the four suits for playing cards?
Any object dropped should have what inital velocity?
v0=0
If an object was thrown up and follows this model:
h(t)=-16t2+3t+30
What velocity was the object thrown with?
3 feet per second
Solve for x
x2-5=11
+4 and -4
Can you use the quadratic formula right now on this equation?
3x2+2x-3=1
No. It has to equal zero
What planet is closest to the sun
Mercury
What makes objects fall down?
Gravity
What is an object's height at ground level?
zero
Solve for x
3x2+1=5x2-1
+1 and -1
What is in the denominator of the quadratic formula?
2a
What colors are the flashlights on my desk?
Red Green and Blue
If an object is dropped and follows this model:
h(t)=-16t2+20
What is the ending height after 1 second passes?
4 feet above the ground
A cannon is setup on a cliff and fires at a target. The cannon ball follows this model:
h(t)=-16t2+50t+123
How high is the cliff?
123 feet above the ground
Solve for x
(x-5)2=25
0 and 10
Solve for x
x2-2x+1=0
1
What temperature does water freeze?
0 degrees Celsius
32 degrees Fahrenheit
If an object follows according to this model:
h(t)=-16t2+64
How long will it take for the object to hit the ground?
2 seconds
A ball is 2 feet above ground and is thrown up with a velocity of 8 feet per second.
What is the model for height that the ball will follow?
h(t)=-16t2+8t+2
Solve for x
2-5(x-1)2=-18
-1 and 3
Solve for x
2x2-3x-5=0
-1 and 2.5
A red man lives in the red house, a blue man lives in the blue house, a yellow man lives in the yellow house. Who lives in the white house?
The president
An object is dropped from 100 feet high.
h(t)=-16t2+100
How long will it take to get half way down?
1.77 seconds
John kicks a soccer ball to Jane. The soccer ball starts on the ground and is kicked up with a velocity of 33 feet per second. Jane caught the soccer ball when it was 2 feet above the ground.
How long was the ball in the air for?
2 seconds