| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.31 |
| Score | 0% | 66% |
Order the following types of angle from least number of degrees to most number of degrees.
acute, obtuse, right |
|
right, obtuse, acute |
|
right, acute, obtuse |
|
acute, right, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
The dimensions of this cylinder are height (h) = 3 and radius (r) = 6. What is the surface area?
| 60π | |
| 108π | |
| 48π | |
| 140π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(62) + 2π(6 x 3)
sa = 2π(36) + 2π(18)
sa = (2 x 36)π + (2 x 18)π
sa = 72π + 36π
sa = 108π
Solve for y:
6y - 5 = -2 - 3y
| -\(\frac{1}{3}\) | |
| -1\(\frac{1}{3}\) | |
| 2\(\frac{2}{3}\) | |
| \(\frac{1}{3}\) |
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 equal sign and the answer on the other.
6y - 5 = -2 - 3y
6y = -2 - 3y + 5
6y + 3y = -2 + 5
9y = 3
y = \( \frac{3}{9} \)
y = \(\frac{1}{3}\)
If a = 9, b = 3, c = 4, and d = 7, what is the perimeter of this quadrilateral?
| 23 | |
| 16 | |
| 28 | |
| 15 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 9 + 3 + 4 + 7
p = 23
Simplify (5a)(2ab) - (8a2)(2b).
| 26ab2 | |
| 26a2b | |
| -6a2b | |
| 6ab2 |
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.
(5a)(2ab) - (8a2)(2b)
(5 x 2)(a x a x b) - (8 x 2)(a2 x b)
(10)(a1+1 x b) - (16)(a2b)
10a2b - 16a2b
-6a2b