| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.29 |
| Score | 0% | 66% |
What is \( \frac{7y^5}{6y^3} \)?
| 1\(\frac{1}{6}\)y-2 | |
| 1\(\frac{1}{6}\)y8 | |
| 1\(\frac{1}{6}\)y1\(\frac{2}{3}\) | |
| 1\(\frac{1}{6}\)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:
\( \frac{7y^5}{6y^3} \)
\( \frac{7}{6} \) y(5 - 3)
1\(\frac{1}{6}\)y2
Solve for \( \frac{2!}{3!} \)
| \( \frac{1}{3} \) | |
| 56 | |
| 120 | |
| \( \frac{1}{9} \) |
A factorial is the product of an integer and all the positive integers below it. To solve a fraction featuring factorials, expand the factorials and cancel out like numbers:
\( \frac{2!}{3!} \)
\( \frac{2 \times 1}{3 \times 2 \times 1} \)
\( \frac{1}{3} \)
\( \frac{1}{3} \)
Frank loaned Monty $600 at an annual interest rate of 4%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $54 | |
| $24 | |
| $5 | |
| $28 |
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 $600
i = 0.04 x $600
i = $24
Which of the following statements about exponents is false?
b1 = 1 |
|
b0 = 1 |
|
b1 = b |
|
all of these are false |
A number with an exponent (be) consists of a base (b) raised to a power (e). The exponent indicates the number of times that the base is multiplied by itself. A base with an exponent of 1 equals the base (b1 = b) and a base with an exponent of 0 equals 1 ( (b0 = 1).
What is the distance in miles of a trip that takes 1 hour at an average speed of 25 miles per hour?
| 120 miles | |
| 45 miles | |
| 480 miles | |
| 25 miles |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for distance:
distance = \( \text{speed} \times \text{time} \)
distance = \( 25mph \times 1h \)
25 miles