| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.21 |
| Score | 0% | 64% |
A(n) __________ is to a parallelogram as a square is to a rectangle.
trapezoid |
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triangle |
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rhombus |
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quadrilateral |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
What is 6a + 2a?
| 8a | |
| 4a2 | |
| 12a | |
| 8a2 |
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.
6a + 2a = 8a
Solve for a:
-9a + 4 < \( \frac{a}{4} \)
| a < \(\frac{9}{23}\) | |
| a < \(\frac{16}{37}\) | |
| a < 1\(\frac{1}{4}\) | |
| a < -1\(\frac{6}{29}\) |
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.
-9a + 4 < \( \frac{a}{4} \)
4 x (-9a + 4) < a
(4 x -9a) + (4 x 4) < a
-36a + 16 < a
-36a + 16 - a < 0
-36a - a < -16
-37a < -16
a < \( \frac{-16}{-37} \)
a < \(\frac{16}{37}\)
Which types of triangles will always have at least two sides of equal length?
equilateral and right |
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equilateral and isosceles |
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isosceles and right |
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equilateral, isosceles and right |
An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.
A coordinate grid is composed of which of the following?
y-axis |
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x-axis |
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origin |
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all of these |
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.