| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.85 |
| Score | 0% | 77% |
If a = 4, b = 1, c = 8, and d = 7, what is the perimeter of this quadrilateral?
| 22 | |
| 20 | |
| 32 | |
| 21 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 4 + 1 + 8 + 7
p = 20
If a = c = 9, b = d = 5, what is the area of this rectangle?
| 35 | |
| 10 | |
| 21 | |
| 45 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 9 x 5
a = 45
Solve for z:
6z + 2 = 3 + 5z
| 1\(\frac{3}{4}\) | |
| 1 | |
| -2\(\frac{2}{3}\) | |
| 4\(\frac{1}{2}\) |
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.
6z + 2 = 3 + 5z
6z = 3 + 5z - 2
6z - 5z = 3 - 2
z = 1
Simplify (6a)(4ab) + (4a2)(5b).
| 44a2b | |
| -4ab2 | |
| 4ab2 | |
| 44ab2 |
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.
(6a)(4ab) + (4a2)(5b)
(6 x 4)(a x a x b) + (4 x 5)(a2 x b)
(24)(a1+1 x b) + (20)(a2b)
24a2b + 20a2b
44a2b
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.