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|---|---|---|
| Questions | 5 | 5 |
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A(n) __________ is to a parallelogram as a square is to a rectangle.
triangle |
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quadrilateral |
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rhombus |
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trapezoid |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
What is 5a3 + 3a3?
| 2 | |
| 8a3 | |
| 8 | |
| 8a6 |
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.
5a3 + 3a3 = 8a3
Solve for y:
-8y + 1 < -1 - 7y
| y < 1 | |
| y < -4 | |
| y < 2 | |
| y < -\(\frac{2}{7}\) |
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.
-8y + 1 < -1 - 7y
-8y < -1 - 7y - 1
-8y + 7y < -1 - 1
-y < -2
y < \( \frac{-2}{-1} \)
y < 2
Solve for a:
-9a + 6 = 5 - 6a
| \(\frac{1}{3}\) | |
| -\(\frac{1}{2}\) | |
| 1\(\frac{1}{2}\) | |
| 2\(\frac{1}{4}\) |
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 equal sign and the answer on the other.
-9a + 6 = 5 - 6a
-9a = 5 - 6a - 6
-9a + 6a = 5 - 6
-3a = -1
a = \( \frac{-1}{-3} \)
a = \(\frac{1}{3}\)
Which of the following statements about a parallelogram is not true?
the perimeter of a parallelogram is the sum of the lengths of all sides |
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a parallelogram is a quadrilateral |
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the area of a parallelogram is base x height |
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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).