| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
Which of the following statements about a parallelogram is not true?
the perimeter of a parallelogram is the sum of the lengths of all sides |
|
the area of a parallelogram is base x height |
|
a parallelogram is a quadrilateral |
|
opposite sides and adjacent angles are equal |
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).
Solve for y:
y + 1 > \( \frac{y}{9} \)
| y > 3 | |
| y > -\(\frac{30}{41}\) | |
| y > -1\(\frac{1}{8}\) | |
| y > -5\(\frac{2}{5}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the > sign and the answer on the other.
y + 1 > \( \frac{y}{9} \)
9 x (y + 1) > y
(9 x y) + (9 x 1) > y
9y + 9 > y
9y + 9 - y > 0
9y - y > -9
8y > -9
y > \( \frac{-9}{8} \)
y > -1\(\frac{1}{8}\)
What is the area of a circle with a radius of 2?
| 81π | |
| 64π | |
| 49π | |
| 4π |
The formula for area is πr2:
a = πr2
a = π(22)
a = 4π
The formula for the area of a circle is which of the following?
a = π r2 |
|
a = π r |
|
a = π d |
|
a = π d2 |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.
A quadrilateral is a shape with __________ sides.
3 |
|
5 |
|
4 |
|
2 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.