| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.51 |
| Score | 0% | 70% |
Order the following types of angle from least number of degrees to most number of degrees.
acute, right, obtuse |
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acute, obtuse, right |
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right, obtuse, acute |
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right, acute, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
Find the value of b:
-6b + z = -8
b - 5z = -9
| 1\(\frac{20}{29}\) | |
| 6\(\frac{1}{3}\) | |
| -\(\frac{4}{11}\) | |
| -7\(\frac{1}{2}\) |
You need to find the value of b so solve the first equation in terms of z:
-6b + z = -8
z = -8 + 6b
then substitute the result (-8 - -6b) into the second equation:
b - 5(-8 + 6b) = -9
b + (-5 x -8) + (-5 x 6b) = -9
b + 40 - 30b = -9
b - 30b = -9 - 40
-29b = -49
b = \( \frac{-49}{-29} \)
b = 1\(\frac{20}{29}\)
The dimensions of this cube are height (h) = 5, length (l) = 5, and width (w) = 1. What is the volume?
| 25 | |
| 36 | |
| 135 | |
| 72 |
The volume of a cube is height x length x width:
v = h x l x w
v = 5 x 5 x 1
v = 25
Which of the following statements about a triangle is not true?
sum of interior angles = 180° |
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perimeter = sum of side lengths |
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exterior angle = sum of two adjacent interior angles |
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area = ½bh |
A triangle is a three-sided polygon. It has three interior angles that add up to 180° (a + b + c = 180°). An exterior angle of a triangle is equal to the sum of the two interior angles that are opposite (d = b + c). The perimeter of a triangle is equal to the sum of the lengths of its three sides, the height of a triangle is equal to the length from the base to the opposite vertex (angle) and the area equals one-half triangle base x height: a = ½ base x height.
A coordinate grid is composed of which of the following?
all of these |
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origin |
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x-axis |
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y-axis |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.