| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.53 |
| Score | 0% | 51% |
If the length of AB equals the length of BD, point B __________ this line segment.
intersects |
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trisects |
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midpoints |
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bisects |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.
If the base of this triangle is 5 and the height is 6, what is the area?
| 15 | |
| 52 | |
| 65 | |
| 45 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 5 x 6 = \( \frac{30}{2} \) = 15
The formula for the area of a circle is which of the following?
c = π r2 |
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c = π d |
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c = π r |
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c = π d2 |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.
Which of the following statements about math operations is incorrect?
you can subtract monomials that have the same variable and the same exponent |
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all of these statements are correct |
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you can add monomials that have the same variable and the same exponent |
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you can multiply monomials that have different variables and different exponents |
You can only add or subtract monomials that have the same variable and the same exponent. For example, 2a + 4a = 6a and 4a2 - a2 = 3a2 but 2a + 4b and 7a - 3b cannot be combined. However, you can multiply and divide monomials with unlike terms. For example, 2a x 6b = 12ab.
Solve for c:
-7c + 4 < -9 + 4c
| c < 3\(\frac{1}{2}\) | |
| c < -\(\frac{5}{9}\) | |
| c < 1\(\frac{2}{11}\) | |
| c < \(\frac{2}{3}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the < sign and the answer on the other.
-7c + 4 < -9 + 4c
-7c < -9 + 4c - 4
-7c - 4c < -9 - 4
-11c < -13
c < \( \frac{-13}{-11} \)
c < 1\(\frac{2}{11}\)