| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.81 |
| Score | 0% | 56% |
Which types of triangles will always have at least two sides of equal length?
equilateral, isosceles and right |
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isosceles and right |
|
equilateral and isosceles |
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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.
If the base of this triangle is 3 and the height is 9, what is the area?
| 13\(\frac{1}{2}\) | |
| 24 | |
| 32 | |
| 52\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 3 x 9 = \( \frac{27}{2} \) = 13\(\frac{1}{2}\)
Simplify (5a)(5ab) + (3a2)(5b).
| -10ab2 | |
| 10a2b | |
| 10ab2 | |
| 40a2b |
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)(5ab) + (3a2)(5b)
(5 x 5)(a x a x b) + (3 x 5)(a2 x b)
(25)(a1+1 x b) + (15)(a2b)
25a2b + 15a2b
40a2b
The dimensions of this cube are height (h) = 2, length (l) = 4, and width (w) = 2. What is the surface area?
| 214 | |
| 174 | |
| 82 | |
| 40 |
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 4 x 2) + (2 x 2 x 2) + (2 x 4 x 2)
sa = (16) + (8) + (16)
sa = 40
A(n) __________ is to a parallelogram as a square is to a rectangle.
trapezoid |
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triangle |
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quadrilateral |
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rhombus |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.