| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.44 |
| Score | 0% | 69% |
Simplify 8a x 8b.
| 64\( \frac{a}{b} \) | |
| 64\( \frac{b}{a} \) | |
| 64a2b2 | |
| 64ab |
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.
8a x 8b = (8 x 8) (a x b) = 64ab
Solve for c:
-2c + 6 > \( \frac{c}{-1} \)
| c > \(\frac{36}{55}\) | |
| c > \(\frac{3}{5}\) | |
| c > 6 | |
| c > 5\(\frac{1}{3}\) |
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 > sign and the answer on the other.
-2c + 6 > \( \frac{c}{-1} \)
-1 x (-2c + 6) > c
(-1 x -2c) + (-1 x 6) > c
2c - 6 > c
2c - 6 - c > 0
2c - c > 6
c > 6
c > \( \frac{6}{1} \)
c > 6
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
First |
|
Odd |
|
Inside |
|
Last |
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.
Simplify (4a)(7ab) + (5a2)(4b).
| 8a2b | |
| 8ab2 | |
| 99ab2 | |
| 48a2b |
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.
(4a)(7ab) + (5a2)(4b)
(4 x 7)(a x a x b) + (5 x 4)(a2 x b)
(28)(a1+1 x b) + (20)(a2b)
28a2b + 20a2b
48a2b
If side a = 8, side b = 9, what is the length of the hypotenuse of this right triangle?
| \( \sqrt{145} \) | |
| \( \sqrt{117} \) | |
| \( \sqrt{58} \) | |
| \( \sqrt{113} \) |
According to the Pythagorean theorem, the hypotenuse squared is equal to the sum of the two perpendicular sides squared:
c2 = a2 + b2
c2 = 82 + 92
c2 = 64 + 81
c2 = 145
c = \( \sqrt{145} \)