| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.74 |
| Score | 0% | 75% |
If a = 6, b = 4, c = 7, and d = 3, what is the perimeter of this quadrilateral?
| 14 | |
| 22 | |
| 24 | |
| 20 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 6 + 4 + 7 + 3
p = 20
A(n) __________ is to a parallelogram as a square is to a rectangle.
triangle |
|
rhombus |
|
quadrilateral |
|
trapezoid |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
Solve for z:
z2 - z - 12 = 0
| 8 or -3 | |
| 5 or -1 | |
| -3 or 4 | |
| 9 or -5 |
The first step to solve a quadratic equation that's set to zero is to factor the quadratic equation:
z2 - z - 12 = 0
(z + 3)(z - 4) = 0
For this expression to be true, the left side of the expression must equal zero. Therefore, either (z + 3) or (z - 4) must equal zero:
If (z + 3) = 0, z must equal -3
If (z - 4) = 0, z must equal 4
So the solution is that z = -3 or 4
A quadrilateral is a shape with __________ sides.
3 |
|
5 |
|
4 |
|
2 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
Simplify 5a x 9b.
| 14ab | |
| 45\( \frac{a}{b} \) | |
| 45ab | |
| 45a2b2 |
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.
5a x 9b = (5 x 9) (a x b) = 45ab