| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.63 |
| Score | 0% | 73% |
The dimensions of this cube are height (h) = 5, length (l) = 8, and width (w) = 3. What is the surface area?
| 22 | |
| 382 | |
| 158 | |
| 68 |
The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):
sa = 2lw + 2wh + 2lh
sa = (2 x 8 x 3) + (2 x 3 x 5) + (2 x 8 x 5)
sa = (48) + (30) + (80)
sa = 158
A right angle measures:
45° |
|
180° |
|
360° |
|
90° |
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Inside |
|
Last |
|
First |
|
Odd |
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.
If angle a = 29° and angle b = 50° what is the length of angle c?
| 82° | |
| 72° | |
| 126° | |
| 101° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 29° - 50° = 101°
Simplify (9a)(4ab) + (5a2)(5b).
| 61a2b | |
| -11ab2 | |
| -11a2b | |
| 130ab2 |
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)(4ab) + (5a2)(5b)
(9 x 4)(a x a x b) + (5 x 5)(a2 x b)
(36)(a1+1 x b) + (25)(a2b)
36a2b + 25a2b
61a2b