| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
\({b + c \over a} = {b \over a} + {c \over a}\) defines which of the following?
distributive property for division |
|
commutative property for multiplication |
|
distributive property for multiplication |
|
commutative property for division |
The distributive property for division helps in solving expressions like \({b + c \over a}\). It specifies that the result of dividing a fraction with multiple terms in the numerator and one term in the denominator can be obtained by dividing each term individually and then totaling the results: \({b + c \over a} = {b \over a} + {c \over a}\). For example, \({a^3 + 6a^2 \over a^2} = {a^3 \over a^2} + {6a^2 \over a^2} = a + 6\).
What is \( \frac{-8y^6}{7y^4} \)?
| -\(\frac{7}{8}\)y-2 | |
| -1\(\frac{1}{7}\)y10 | |
| -1\(\frac{1}{7}\)y\(\frac{2}{3}\) | |
| -1\(\frac{1}{7}\)y2 |
To divide terms with exponents, the base of both exponents must be the same. In this case they are so divide the coefficients and subtract the exponents:
\( \frac{-8y^6}{7y^4} \)
\( \frac{-8}{7} \) y(6 - 4)
-1\(\frac{1}{7}\)y2
Simplify \( \sqrt{18} \)
| 6\( \sqrt{2} \) | |
| 6\( \sqrt{4} \) | |
| 2\( \sqrt{4} \) | |
| 3\( \sqrt{2} \) |
To simplify a radical, factor out the perfect squares:
\( \sqrt{18} \)
\( \sqrt{9 \times 2} \)
\( \sqrt{3^2 \times 2} \)
3\( \sqrt{2} \)
What is \( \frac{2}{6} \) x \( \frac{3}{8} \)?
| 1 | |
| \(\frac{1}{18}\) | |
| \(\frac{1}{7}\) | |
| \(\frac{1}{8}\) |
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{2}{6} \) x \( \frac{3}{8} \) = \( \frac{2 x 3}{6 x 8} \) = \( \frac{6}{48} \) = \(\frac{1}{8}\)
What is the next number in this sequence: 1, 5, 13, 25, 41, __________ ?
| 63 | |
| 70 | |
| 67 | |
| 61 |
The equation for this sequence is:
an = an-1 + 4(n - 1)
where n is the term's order in the sequence, an is the value of the term, and an-1 is the value of the term before an. This makes the next number:
a6 = a5 + 4(6 - 1)
a6 = 41 + 4(5)
a6 = 61