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1/14/14 2.3 Homework (Quadratic Equations)

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Online Homework System Assignment Worksheet

1/14/14 - 10:05 AM

Name: ____________________________ Class: Post University - College Algebra

(MAT120.37, MOD 3) (1qaq3b2)

Class #: ____________________________ Section #: ____________________________

Instructor:Maple T.A. Administrator Assignment:2.3 Homework (Quadratic Equations)

Question 1: (1 point)

Solve by factoring.

If there are multiple solutions, separate the answers with semicolons (;).

__________

Question 2: (1 point)

Solve by factoring.

If there are multiple solutions, separate the answers with semicolons (;).

__________

Question 3: (1 point)

Find the discriminant and identify the best description of the equation's root(s).

(a)1 real and 1 complex root

= 3x+18x2

x =

6 +13x = 5x2

x =

+5 = x−2x2 7√

1/14/14 2.3 Homework (Quadratic Equations)

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(b) 2 complex solutions

(c) 1 complex solution

(d) 1 real solution

(e) 2 real solutions

Question 4: (1 point)

At a tennis club, a 15,000 ft2 rectangular area is partitioned into three rectangular courts of equal size. A total of 800

feet of fencing is used to enclose the three courts, including the interior sides.

What are the possible dimensions, in feet, of the entire rectangular area?

Select all that apply.

(a) feet by feet

(b) feet by feet

(c) feet by feet

(d) feet by feet

feet by feet

25 600

100 150

100 50

100 300

300 50

1/14/14 2.3 Homework (Quadratic Equations)

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(e)

Question 5: (1 point)

A ladder of length 2x+1 feet is positioned against a wall such that the bottom is x−1 feet away from a wall. The distance

between the floor and the top of the ladder is 2x feet.

Find the length, in feet, of the ladder.

The length of the ladder is ____________feet.

Assume that a right angle is formed by the wall and the floor.

Question 6: (1 point)

A small rock sits on the edge of a tall building. A strong wind blows the rock off the edge. The distance, in feet, between

the rock and the ground seconds after the rock leaves the edge is given by

How many seconds after the rock leaves the edge is it feet from the ground?

If the answer is not an integer, enter it as a decimal. Round to the nearest hundredth, if needed.

____________ seconds

How many seconds after the rock leaves the edge does it hit the ground?

If the answer is not an integer, enter it as a decimal. Round to the nearest hundredth, if needed.

____________ seconds

t d = −16 − 4t + 472.t2

460