| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
A bread recipe calls for 3\(\frac{3}{8}\) cups of flour. If you only have \(\frac{1}{8}\) cup, how much more flour is needed?
| 3\(\frac{1}{4}\) cups | |
| 2\(\frac{3}{8}\) cups | |
| 2\(\frac{5}{8}\) cups | |
| 1\(\frac{5}{8}\) cups |
The amount of flour you need is (3\(\frac{3}{8}\) - \(\frac{1}{8}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{27}{8} \) - \( \frac{1}{8} \)) cups
\( \frac{26}{8} \) cups
3\(\frac{1}{4}\) cups
Which of the following is not an integer?
\({1 \over 2}\) |
|
1 |
|
-1 |
|
0 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
If a mayor is elected with 82% of the votes cast and 85% of a town's 15,000 voters cast a vote, how many votes did the mayor receive?
| 10,583 | |
| 10,455 | |
| 10,073 | |
| 7,140 |
If 85% of the town's 15,000 voters cast ballots the number of votes cast is:
(\( \frac{85}{100} \)) x 15,000 = \( \frac{1,275,000}{100} \) = 12,750
The mayor got 82% of the votes cast which is:
(\( \frac{82}{100} \)) x 12,750 = \( \frac{1,045,500}{100} \) = 10,455 votes.
If there were a total of 450 raffle tickets sold and you bought 9 tickets, what's the probability that you'll win the raffle?
| 2% | |
| 9% | |
| 12% | |
| 7% |
You have 9 out of the total of 450 raffle tickets sold so you have a (\( \frac{9}{450} \)) x 100 = \( \frac{9 \times 100}{450} \) = \( \frac{900}{450} \) = 2% chance to win the raffle.
What is \( \frac{4y^9}{2y^3} \)?
| 2y27 | |
| \(\frac{1}{2}\)y12 | |
| 2y6 | |
| 2y12 |
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:
\( \frac{4y^9}{2y^3} \)
\( \frac{4}{2} \) y(9 - 3)
2y6