| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.84 |
| Score | 0% | 57% |
The dimensions of this cube are height (h) = 9, length (l) = 4, and width (w) = 7. What is the surface area?
| 64 | |
| 144 | |
| 42 | |
| 254 |
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 7) + (2 x 7 x 9) + (2 x 4 x 9)
sa = (56) + (126) + (72)
sa = 254
A(n) __________ is to a parallelogram as a square is to a rectangle.
quadrilateral |
|
triangle |
|
trapezoid |
|
rhombus |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
Find the value of c:
-c + x = 9
-7c + 6x = 5
| 6\(\frac{1}{2}\) | |
| -1\(\frac{4}{19}\) | |
| -\(\frac{17}{64}\) | |
| 49 |
You need to find the value of c so solve the first equation in terms of x:
-c + x = 9
x = 9 + c
then substitute the result (9 - -1c) into the second equation:
-7c + 6(9 + c) = 5
-7c + (6 x 9) + (6 x c) = 5
-7c + 54 + 6c = 5
-7c + 6c = 5 - 54
-c = -49
c = \( \frac{-49}{-1} \)
c = 49
What is the circumference of a circle with a diameter of 19?
| 12π | |
| 13π | |
| 5π | |
| 19π |
The formula for circumference is circle diameter x π:
c = πd
c = 19π
A trapezoid is a quadrilateral with one set of __________ sides.
right angle |
|
parallel |
|
equal angle |
|
equal length |
A trapezoid is a quadrilateral with one set of parallel sides.