| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.88 |
| Score | 0% | 78% |
If a = -2 and y = 3, what is the value of -8a(a - y)?
| 0 | |
| 36 | |
| -576 | |
| -80 |
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.)
-8a(a - y)
-8(-2)(-2 - 3)
-8(-2)(-5)
(16)(-5)
-80
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Odd |
|
Last |
|
Inside |
|
First |
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.
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
pairs |
|
division |
|
addition |
|
exponents |
When solving an equation with two variables, 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.)
If a = c = 4, b = d = 2, what is the area of this rectangle?
| 9 | |
| 40 | |
| 24 | |
| 8 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 4 x 2
a = 8
If side a = 5, side b = 9, what is the length of the hypotenuse of this right triangle?
| \( \sqrt{5} \) | |
| \( \sqrt{106} \) | |
| \( \sqrt{130} \) | |
| \( \sqrt{82} \) |
According to the Pythagorean theorem, the hypotenuse squared is equal to the sum of the two perpendicular sides squared:
c2 = a2 + b2
c2 = 52 + 92
c2 = 25 + 81
c2 = 106
c = \( \sqrt{106} \)