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Algebera L9-6 Quiz v3

Last updated about 2 years ago

5 questions

1

1

1

Question 3

3.

Use the quadratic formula to solve the equation.
2x^{2}-3x-5=0

1

Question 4

4.

What is the solution set of the equation 9y^{2}-11=6y?

2

Question 1

1.

How many real solutions does the equation 4k^{2}+5k+4=-3k have?

No real solution

One real solution

Two real solutions

More than two real solutions

Question 2

2.

The graph of y=ax^{2}+bx+c is shown below. Which of the following statements must be true? Select all that apply.

b^{2}-4ac=0

The equation ax^{2}+bx+c=0 has two real solutions.

b^{2}-4ac>0

The equation ax^{2}+bx+c=0 has no real solutions.

b^{2}-4ac<0

Question 5

5.

A basketball player take a shot at a three-pointer and sends the ball on a parabolic path. It is 8.5 ft high when it leaves the player's hands. After reaching its maximum height somewhere in between the player and the basket, it's downward arc is genlty interrupted when it swooshes perfectly through the hoop, 10 feet above the floor.

If the hight of the ball t seconds after the ball leaves the player's hands is modeled by the equation h(t)=-5t^{2}+12t+8.5, how many seconds does it take for the ball to reach the basket? Round your answer to the nearest tenth of a second.