Learn how to solve a word problem by using factoring a quadratic

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Mathematics
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11th Grade - University
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula used to calculate the area of a rectangle?
Length times width
Length plus width
Length divided by width
Length minus width
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the new dimensions of the patio in terms of X?
(20 / X) and (30 / X)
(20 * X) and (30 * X)
(20 - X) and (30 - X)
(20 + X) and (30 + X)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in solving the quadratic equation for the new patio area?
Add the terms
Set the equation to zero
Divide the terms
Multiply the terms
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method is used to solve the quadratic equation in this context?
Factoring
Graphing
Completing the square
Using the quadratic formula
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the variable X represent in the context of the patio problem?
The width of the patio
The length of the patio
The extension of the patio
The area of the patio
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is a negative value for X not a valid solution?
Because it would make the width negative
Because it would make the length negative
Because it would make the perimeter negative
Because it would make the area negative
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the new side lengths of the patio when X equals 8?
20 and 30
28 and 38
18 and 28
38 and 48
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