| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.43 |
| Score | 0% | 69% |
A trapezoid is a quadrilateral with one set of __________ sides.
parallel |
|
equal length |
|
equal angle |
|
right angle |
A trapezoid is a quadrilateral with one set of parallel sides.
If a = c = 7, b = d = 9, what is the area of this rectangle?
| 18 | |
| 36 | |
| 15 | |
| 63 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 7 x 9
a = 63
What is 9a8 + 5a8?
| 14a8 | |
| a816 | |
| 45a8 | |
| 4a16 |
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.
9a8 + 5a8 = 14a8
Which types of triangles will always have at least two sides of equal length?
isosceles and right |
|
equilateral and isosceles |
|
equilateral and right |
|
equilateral, isosceles and right |
An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.
Simplify (7a)(5ab) - (6a2)(3b).
| -17ab2 | |
| 17a2b | |
| 53ab2 | |
| 53a2b |
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.
(7a)(5ab) - (6a2)(3b)
(7 x 5)(a x a x b) - (6 x 3)(a2 x b)
(35)(a1+1 x b) - (18)(a2b)
35a2b - 18a2b
17a2b