| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.51 |
| Score | 0% | 70% |
What is 4a6 + 3a6?
| 12a6 | |
| 7a6 | |
| 1 | |
| 7a12 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
4a6 + 3a6 = 7a6
Which of the following statements about a parallelogram is not true?
the area of a parallelogram is base x height |
|
opposite sides and adjacent angles are equal |
|
a parallelogram is a quadrilateral |
|
the perimeter of a parallelogram is the sum of the lengths of all sides |
A parallelogram is a quadrilateral with two sets of parallel sides. Opposite sides (a = c, b = d) and angles (red = red, blue = blue) are equal. The area of a parallelogram is base x height and the perimeter is the sum of the lengths of all sides (a + b + c + d).
If a = c = 6, b = d = 9, what is the area of this rectangle?
| 18 | |
| 54 | |
| 81 | |
| 72 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 6 x 9
a = 54
What is the area of a circle with a diameter of 10?
| 8π | |
| 7π | |
| 4π | |
| 25π |
The formula for area is πr2. Radius is circle \( \frac{diameter}{2} \):
r = \( \frac{d}{2} \)
r = \( \frac{10}{2} \)
r = 5
a = πr2
a = π(52)
a = 25π
If BD = 16 and AD = 17, AB = ?
| 13 | |
| 1 | |
| 16 | |
| 18 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BD