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Algebera L9-6 Quiz v2

Last updated about 2 years ago

5 questions

1

1

1

Question 3

3.

Use the quadratic formula to solve the equation.
m^{2}-5m+6=0

1

Question 4

4.

What is the solution set of the equation 4x^{2}-12x+9=0?

1

Question 1

1.

How many real solutions does the equation 7x^{2}-4x-12=0 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.

The function has two real roots.

The related equation has exactly one solution.

The leading coefficient is negative (a<0).

The discriminant is 0.

Question 5

5.

A waterfall has a height of 1500 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 12 feet per second. The height of the pebble h in feet after t seconds is given by the equation h(t)=−16t^{2}+12t+1500. How long after the pebble is thrown will it hit the ground?

You do not need to convert your square root expression into decimal form. You may leave your answer as x= \frac{-b \pm \sqrt{\textrm{something}}}{2a}.