| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.77 |
| Score | 0% | 55% |
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 30% off." If Roger buys two shirts, each with a regular price of $44, how much will he pay for both shirts?
| $66.00 | |
| $30.80 | |
| $13.20 | |
| $74.80 |
By buying two shirts, Roger will save $44 x \( \frac{30}{100} \) = \( \frac{$44 x 30}{100} \) = \( \frac{$1320}{100} \) = $13.20 on the second shirt.
So, his total cost will be
$44.00 + ($44.00 - $13.20)
$44.00 + $30.80
$74.80
What is 8\( \sqrt{2} \) x 2\( \sqrt{7} \)?
| 16\( \sqrt{2} \) | |
| 16\( \sqrt{14} \) | |
| 16\( \sqrt{7} \) | |
| 10\( \sqrt{2} \) |
To multiply terms with radicals, multiply the coefficients and radicands separately:
8\( \sqrt{2} \) x 2\( \sqrt{7} \)
(8 x 2)\( \sqrt{2 \times 7} \)
16\( \sqrt{14} \)
What is \( \frac{4}{5} \) x \( \frac{2}{8} \)?
| \(\frac{8}{25}\) | |
| \(\frac{1}{56}\) | |
| \(\frac{1}{5}\) | |
| 1\(\frac{3}{5}\) |
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{4}{5} \) x \( \frac{2}{8} \) = \( \frac{4 x 2}{5 x 8} \) = \( \frac{8}{40} \) = \(\frac{1}{5}\)
If there were a total of 50 raffle tickets sold and you bought 1 tickets, what's the probability that you'll win the raffle?
| 12% | |
| 2% | |
| 14% | |
| 17% |
You have 1 out of the total of 50 raffle tickets sold so you have a (\( \frac{1}{50} \)) x 100 = \( \frac{1 \times 100}{50} \) = \( \frac{100}{50} \) = 2% chance to win the raffle.
Which of the following statements about exponents is false?
all of these are false |
|
b0 = 1 |
|
b1 = 1 |
|
b1 = b |
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).