| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 4.01 |
| Score | 0% | 80% |
A quadrilateral is a shape with __________ sides.
5 |
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3 |
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4 |
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2 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
A right angle measures:
360° |
|
45° |
|
180° |
|
90° |
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.
A(n) __________ is two expressions separated by an equal sign.
problem |
|
expression |
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equation |
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formula |
An equation is two expressions separated by an equal sign. The key to solving equations is to 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.
If a = 5, b = 5, c = 3, and d = 4, what is the perimeter of this quadrilateral?
| 13 | |
| 22 | |
| 17 | |
| 11 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 5 + 5 + 3 + 4
p = 17
Solve for z:
-5z - 3 > 2 + 9z
| z > \(\frac{1}{9}\) | |
| z > -\(\frac{1}{3}\) | |
| z > -\(\frac{5}{14}\) | |
| z > 1\(\frac{4}{5}\) |
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.
-5z - 3 > 2 + 9z
-5z > 2 + 9z + 3
-5z - 9z > 2 + 3
-14z > 5
z > \( \frac{5}{-14} \)
z > -\(\frac{5}{14}\)