| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.43 |
| Score | 0% | 69% |
Simplify 8a x 8b.
| 64\( \frac{a}{b} \) | |
| 64ab | |
| 64a2b2 | |
| 64\( \frac{b}{a} \) |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
8a x 8b = (8 x 8) (a x b) = 64ab
If side a = 9, side b = 8, what is the length of the hypotenuse of this right triangle?
| \( \sqrt{26} \) | |
| \( \sqrt{80} \) | |
| \( \sqrt{52} \) | |
| \( \sqrt{145} \) |
According to the Pythagorean theorem, the hypotenuse squared is equal to the sum of the two perpendicular sides squared:
c2 = a2 + b2
c2 = 92 + 82
c2 = 81 + 64
c2 = 145
c = \( \sqrt{145} \)
Which of the following statements about a parallelogram is not true?
the area of a parallelogram is base x height |
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a parallelogram is a quadrilateral |
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the perimeter of a parallelogram is the sum of the lengths of all sides |
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opposite sides and adjacent angles are equal |
A parallelogram is a quadrilateral with two sets of parallel sides. Opposite sides (a = c, b = d) and angles (red = red, blue = blue) are equal. The area of a parallelogram is base x height and the perimeter is the sum of the lengths of all sides (a + b + c + d).
If the base of this triangle is 6 and the height is 8, what is the area?
| 24\(\frac{1}{2}\) | |
| 24 | |
| 25 | |
| 49 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 6 x 8 = \( \frac{48}{2} \) = 24
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Inside |
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Odd |
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Last |
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First |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses.