| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
A trapezoid is a quadrilateral with one set of __________ sides.
parallel |
|
right angle |
|
equal angle |
|
equal length |
A trapezoid is a quadrilateral with one set of parallel sides.
What is the circumference of a circle with a radius of 2?
| 14π | |
| 38π | |
| 16π | |
| 4π |
The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:
c = πd
c = π(2 * r)
c = π(2 * 2)
c = 4π
Simplify 2a x 2b.
| 4\( \frac{a}{b} \) | |
| 4ab | |
| 4\( \frac{b}{a} \) | |
| 4a2b2 |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
2a x 2b = (2 x 2) (a x b) = 4ab
Solve for c:
4c + 1 > \( \frac{c}{-1} \)
| c > 1\(\frac{3}{5}\) | |
| c > -\(\frac{1}{5}\) | |
| c > -\(\frac{3}{7}\) | |
| c > -1\(\frac{7}{25}\) |
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.
4c + 1 > \( \frac{c}{-1} \)
-1 x (4c + 1) > c
(-1 x 4c) + (-1 x 1) > c
-4c - 1 > c
-4c - 1 - c > 0
-4c - c > 1
-5c > 1
c > \( \frac{1}{-5} \)
c > -\(\frac{1}{5}\)
Which of the following is not true about both rectangles and squares?
all interior angles are right angles |
|
the lengths of all sides are equal |
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the area is length x width |
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the perimeter is the sum of the lengths of all four sides |
A rectangle is a parallelogram containing four right angles. Opposite sides (a = c, b = d) are equal and the perimeter is the sum of the lengths of all sides (a + b + c + d) or, comonly, 2 x length x width. The area of a rectangle is length x width. A square is a rectangle with four equal length sides. The perimeter of a square is 4 x length of one side (4s) and the area is the length of one side squared (s2).