| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
What is 9c5 + 6c5?
| 15c5 | |
| 15c25 | |
| -3c-5 | |
| 3c5 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so add the coefficients and retain the base and exponent:
9c5 + 6c5
(9 + 6)c5
15c5
Which of the following is an improper fraction?
\({a \over 5} \) |
|
\({7 \over 5} \) |
|
\({2 \over 5} \) |
|
\(1 {2 \over 5} \) |
A rational number (or fraction) is represented as a ratio between two integers, a and b, and has the form \({a \over b}\) where a is the numerator and b is the denominator. An improper fraction (\({5 \over 3} \)) has a numerator with a greater absolute value than the denominator and can be converted into a mixed number (\(1 {2 \over 3} \)) which has a whole number part and a fractional part.
The __________ is the greatest factor that divides two integers.
greatest common factor |
|
least common multiple |
|
greatest common multiple |
|
absolute value |
The greatest common factor (GCF) is the greatest factor that divides two integers.
Convert c-5 to remove the negative exponent.
| \( \frac{-5}{c} \) | |
| \( \frac{-5}{-c} \) | |
| \( \frac{1}{c^{-5}} \) | |
| \( \frac{1}{c^5} \) |
To convert a negative exponent to a positive exponent, calculate the positive exponent then take the reciprocal.
Bob loaned Frank $300 at an annual interest rate of 5%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $72 | |
| $21 | |
| $10 | |
| $15 |
The yearly interest charged on this loan is the annual interest rate multiplied by the amount borrowed:
interest = annual interest rate x loan amount
i = (\( \frac{6}{100} \)) x $300
i = 0.05 x $300
i = $15