| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.49 |
| Score | 0% | 70% |
Simplify (5a)(3ab) - (7a2)(6b).
| 57ab2 | |
| 104a2b | |
| 27ab2 | |
| -27a2b |
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)(3ab) - (7a2)(6b)
(5 x 3)(a x a x b) - (7 x 6)(a2 x b)
(15)(a1+1 x b) - (42)(a2b)
15a2b - 42a2b
-27a2b
If the base of this triangle is 2 and the height is 5, what is the area?
| 56 | |
| 45\(\frac{1}{2}\) | |
| 105 | |
| 5 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 2 x 5 = \( \frac{10}{2} \) = 5
The dimensions of this cube are height (h) = 2, length (l) = 6, and width (w) = 5. What is the volume?
| 243 | |
| 315 | |
| 12 | |
| 60 |
The volume of a cube is height x length x width:
v = h x l x w
v = 2 x 6 x 5
v = 60
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.
Which types of triangles will always have at least two sides of equal length?
isosceles and right |
|
equilateral and isosceles |
|
equilateral, isosceles and right |
|
equilateral 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.