| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.47 |
| Score | 0% | 69% |
If a = c = 7, b = d = 2, what is the area of this rectangle?
| 36 | |
| 12 | |
| 81 | |
| 14 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 7 x 2
a = 14
The dimensions of this trapezoid are a = 5, b = 8, c = 8, d = 6, and h = 4. What is the area?
| 26 | |
| 28 | |
| 7 | |
| 7\(\frac{1}{2}\) |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(8 + 6)(4)
a = ½(14)(4)
a = ½(56) = \( \frac{56}{2} \)
a = 28
If side x = 10cm, side y = 9cm, and side z = 6cm what is the perimeter of this triangle?
| 36cm | |
| 25cm | |
| 24cm | |
| 21cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 10cm + 9cm + 6cm = 25cm
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
lw x wh + lh |
|
h2 x l2 x w2 |
|
h x l x w |
|
2lw x 2wh + 2lh |
A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.
Simplify (6a)(2ab) + (3a2)(8b).
| 36a2b | |
| 36ab2 | |
| 12ab2 | |
| 88ab2 |
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.
(6a)(2ab) + (3a2)(8b)
(6 x 2)(a x a x b) + (3 x 8)(a2 x b)
(12)(a1+1 x b) + (24)(a2b)
12a2b + 24a2b
36a2b