| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.29 |
| Score | 0% | 66% |
If c = 5 and x = 5, what is the value of c(c - x)?
| 30 | |
| -8 | |
| -40 | |
| 0 |
To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
c(c - x)
1(5)(5 - 5)
1(5)(0)
(5)(0)
0
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 trapezoid are a = 6, b = 2, c = 8, d = 3, and h = 4. What is the area?
| 10 | |
| 26 | |
| 22\(\frac{1}{2}\) | |
| 20 |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(2 + 3)(4)
a = ½(5)(4)
a = ½(20) = \( \frac{20}{2} \)
a = 10
What is the area of a circle with a radius of 5?
| 3π | |
| 5π | |
| 8π | |
| 25π |
The formula for area is πr2:
a = πr2
a = π(52)
a = 25π
Simplify (y + 3)(y + 1)
| y2 - 2y - 3 | |
| y2 - 4y + 3 | |
| y2 + 2y - 3 | |
| y2 + 4y + 3 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y + 3)(y + 1)
(y x y) + (y x 1) + (3 x y) + (3 x 1)
y2 + y + 3y + 3
y2 + 4y + 3