| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.64 |
| Score | 0% | 73% |
What is -2y2 x 7y6?
| -14y6 | |
| -14y2 | |
| -14y4 | |
| -14y8 |
To multiply terms with exponents, the base of both exponents must be the same. In this case they are so multiply the coefficients and add the exponents:
-2y2 x 7y6
(-2 x 7)y(2 + 6)
-14y8
Simplify \( \frac{24}{44} \).
| \( \frac{9}{16} \) | |
| \( \frac{6}{11} \) | |
| \( \frac{10}{11} \) | |
| \( \frac{3}{7} \) |
To simplify this fraction, first find the greatest common factor between them. The factors of 24 are [1, 2, 3, 4, 6, 8, 12, 24] and the factors of 44 are [1, 2, 4, 11, 22, 44]. They share 3 factors [1, 2, 4] making 4 their greatest common factor (GCF).
Next, divide both numerator and denominator by the GCF:
\( \frac{24}{44} \) = \( \frac{\frac{24}{4}}{\frac{44}{4}} \) = \( \frac{6}{11} \)
What is \( \frac{6x^9}{4x^3} \)?
| 1\(\frac{1}{2}\)x\(\frac{1}{3}\) | |
| 1\(\frac{1}{2}\)x6 | |
| 1\(\frac{1}{2}\)x27 | |
| \(\frac{2}{3}\)x12 |
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:
\( \frac{6x^9}{4x^3} \)
\( \frac{6}{4} \) x(9 - 3)
1\(\frac{1}{2}\)x6
How many 6-passenger vans will it take to drive all 53 members of the football team to an away game?
| 7 vans | |
| 9 vans | |
| 3 vans | |
| 14 vans |
Calculate the number of vans needed by dividing the number of people that need transported by the capacity of one van:
vans = \( \frac{53}{6} \) = 8\(\frac{5}{6}\)
So, it will take 8 full vans and one partially full van to transport the entire team making a total of 9 vans.
Monty loaned Jennifer $100 at an annual interest rate of 8%. If no payments are made, what is the total amount owed at the end of the first year?
| $104 | |
| $102 | |
| $105 | |
| $108 |
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 $100
i = 0.08 x $100
No payments were made so the total amount due is the original amount + the accumulated interest:
total = $100 + $8