| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.11 |
| Score | 0% | 62% |
A(n) __________ is to a parallelogram as a square is to a rectangle.
triangle |
|
rhombus |
|
trapezoid |
|
quadrilateral |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
Simplify (y + 3)(y - 5)
| y2 + 8y + 15 | |
| y2 - 8y + 15 | |
| y2 + 2y - 15 | |
| y2 - 2y - 15 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y + 3)(y - 5)
(y x y) + (y x -5) + (3 x y) + (3 x -5)
y2 - 5y + 3y - 15
y2 - 2y - 15
If the base of this triangle is 5 and the height is 5, what is the area?
| 12\(\frac{1}{2}\) | |
| 25 | |
| 82\(\frac{1}{2}\) | |
| 32 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 5 x 5 = \( \frac{25}{2} \) = 12\(\frac{1}{2}\)
The formula for the area of a circle is which of the following?
a = π r |
|
a = π r2 |
|
a = π d |
|
a = π d2 |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.
Simplify (9a)(2ab) - (8a2)(6b).
| 154ab2 | |
| 66a2b | |
| -30a2b | |
| 30ab2 |
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.
(9a)(2ab) - (8a2)(6b)
(9 x 2)(a x a x b) - (8 x 6)(a2 x b)
(18)(a1+1 x b) - (48)(a2b)
18a2b - 48a2b
-30a2b