| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
Solve for b:
-2b - 2 > \( \frac{b}{1} \)
| b > -\(\frac{2}{3}\) | |
| b > -2\(\frac{4}{5}\) | |
| b > \(\frac{3}{7}\) | |
| b > -1\(\frac{17}{28}\) |
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.
-2b - 2 > \( \frac{b}{1} \)
1 x (-2b - 2) > b
(1 x -2b) + (1 x -2) > b
-2b - 2 > b
-2b - 2 - b > 0
-2b - b > 2
-3b > 2
b > \( \frac{2}{-3} \)
b > -\(\frac{2}{3}\)
A coordinate grid is composed of which of the following?
origin |
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y-axis |
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all of these |
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x-axis |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
What is 8a9 + 3a9?
| 11a9 | |
| 11a18 | |
| 24a9 | |
| 5 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
8a9 + 3a9 = 11a9
A quadrilateral is a shape with __________ sides.
2 |
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3 |
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5 |
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4 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
Which of the following statements about parallel lines with a transversal is not correct?
all acute angles equal each other |
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same-side interior angles are complementary and equal each other |
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angles in the same position on different parallel lines are called corresponding angles |
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all of the angles formed by a transversal are called interior angles |
Parallel lines are lines that share the same slope (steepness) and therefore never intersect. A transversal occurs when a set of parallel lines are crossed by another line. All of the angles formed by a transversal are called interior angles and angles in the same position on different parallel lines equal each other (a° = w°, b° = x°, c° = z°, d° = y°) and are called corresponding angles. Alternate interior angles are equal (a° = z°, b° = y°, c° = w°, d° = x°) and all acute angles (a° = c° = w° = z°) and all obtuse angles (b° = d° = x° = y°) equal each other. Same-side interior angles are supplementary and add up to 180° (e.g. a° + d° = 180°, d° + c° = 180°).