Solving Quadratic Equations: Quadratic Formula

Question 1

Question 1

Revolt · Accepted Answer

10 cm

Question 2

Question 2

Revolt · Accepted Answer

24 cm

Question 3

Which solution can be simplified to determine when the object will hit the ground?

Revolt · Accepted Answer

t =

Question 4

A triangle’s height is 6c meters and the base is c – 1 meters. Brian knows that the area of the triangle is 18 square meters and is trying to find the height. Which shows the equation Brian can use and the correct measure of the height of the triangle?Area of a triangle = 0.5(base)(height)

Revolt · Accepted Answer

0.5(c – 1)(6c) = 18; height = 18 meters

Question 5

An object is launched into the air. The projectile motion of the object can be modeled using the functionh(t) = –16t2 + 72t + 5, where t is the time in seconds since the launch and h(t) represents the height in feet of the object after t seconds. What is true about the projectile motion of this object? Check all that apply.The initial height is 5 feet.The initial velocity of the object is –72 feet/second.The object will hit the ground after approximately 4.57 seconds.After 3 seconds, the object is 173 feet high.At t = 0, h(t) = 0.

Revolt · Accepted Answer

The initial height is 5 feet.; The object will hit the ground after approximately 4.57 seconds.

Question 6

What is the approximate value of the hypotenuse?

Revolt · Accepted Answer

10.25 inches

Question 7

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

Use x and x + 1 to model the two consecutive integers.; The quadratic equation is x(x + 1) = 1,332.; x = 36 and –37.; –37 is not a viable solution since it is negative.; The larger number is 37.

Solving Quadratic Equations: Quadratic Formula Answers

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