| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.68 |
| Score | 0% | 74% |
Which of the following expressions contains exactly two terms?
monomial |
|
binomial |
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quadratic |
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polynomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
If BD = 24 and AD = 29, AB = ?
| 3 | |
| 15 | |
| 14 | |
| 5 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDSolve for c:
c2 + 5c - 39 = 4c + 3
| 6 or -7 | |
| 6 or -8 | |
| 7 or -5 | |
| -5 or -9 |
The first step to solve a quadratic expression that's not set to zero is to solve the equation so that it is set to zero:
c2 + 5c - 39 = 4c + 3
c2 + 5c - 39 - 3 = 4c
c2 + 5c - 4c - 42 = 0
c2 + c - 42 = 0
Next, factor the quadratic equation:
c2 + c - 42 = 0
(c - 6)(c + 7) = 0
For this expression to be true, the left side of the expression must equal zero. Therefore, either (c - 6) or (c + 7) must equal zero:
If (c - 6) = 0, c must equal 6
If (c + 7) = 0, c must equal -7
So the solution is that c = 6 or -7
A quadrilateral is a shape with __________ sides.
4 |
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5 |
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3 |
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2 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
h x l x w |
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lw x wh + lh |
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2lw x 2wh + 2lh |
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h2 x l2 x w2 |
A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.