| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.07 |
| Score | 0% | 61% |
What is the next number in this sequence: 1, 5, 9, 13, 17, __________ ?
| 30 | |
| 14 | |
| 21 | |
| 20 |
The equation for this sequence is:
an = an-1 + 4
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
a6 = 17 + 4
a6 = 21
Simplify \( \sqrt{12} \)
| 5\( \sqrt{6} \) | |
| 7\( \sqrt{3} \) | |
| 2\( \sqrt{3} \) | |
| 8\( \sqrt{3} \) |
To simplify a radical, factor out the perfect squares:
\( \sqrt{12} \)
\( \sqrt{4 \times 3} \)
\( \sqrt{2^2 \times 3} \)
2\( \sqrt{3} \)
If a mayor is elected with 88% of the votes cast and 86% of a town's 32,000 voters cast a vote, how many votes did the mayor receive?
| 24,218 | |
| 21,190 | |
| 17,062 | |
| 15,962 |
If 86% of the town's 32,000 voters cast ballots the number of votes cast is:
(\( \frac{86}{100} \)) x 32,000 = \( \frac{2,752,000}{100} \) = 27,520
The mayor got 88% of the votes cast which is:
(\( \frac{88}{100} \)) x 27,520 = \( \frac{2,421,760}{100} \) = 24,218 votes.
A bread recipe calls for 2\(\frac{1}{4}\) cups of flour. If you only have \(\frac{3}{4}\) cup, how much more flour is needed?
| 2\(\frac{1}{2}\) cups | |
| 3\(\frac{1}{8}\) cups | |
| 1\(\frac{1}{2}\) cups | |
| 1\(\frac{1}{8}\) cups |
The amount of flour you need is (2\(\frac{1}{4}\) - \(\frac{3}{4}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{18}{8} \) - \( \frac{6}{8} \)) cups
\( \frac{12}{8} \) cups
1\(\frac{1}{2}\) cups
Cooks are needed to prepare for a large party. Each cook can bake either 2 large cakes or 11 small cakes per hour. The kitchen is available for 2 hours and 40 large cakes and 410 small cakes need to be baked.
How many cooks are required to bake the required number of cakes during the time the kitchen is available?
| 5 | |
| 10 | |
| 29 | |
| 9 |
If a single cook can bake 2 large cakes per hour and the kitchen is available for 2 hours, a single cook can bake 2 x 2 = 4 large cakes during that time. 40 large cakes are needed for the party so \( \frac{40}{4} \) = 10 cooks are needed to bake the required number of large cakes.
If a single cook can bake 11 small cakes per hour and the kitchen is available for 2 hours, a single cook can bake 11 x 2 = 22 small cakes during that time. 410 small cakes are needed for the party so \( \frac{410}{22} \) = 18\(\frac{7}{11}\) cooks are needed to bake the required number of small cakes.
Because you can't employ a fractional cook, round the number of cooks needed for each type of cake up to the next whole number resulting in 10 + 19 = 29 cooks.