| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.39 |
| Score | 0% | 68% |
If there were a total of 200 raffle tickets sold and you bought 4 tickets, what's the probability that you'll win the raffle?
| 2% | |
| 16% | |
| 12% | |
| 5% |
You have 4 out of the total of 200 raffle tickets sold so you have a (\( \frac{4}{200} \)) x 100 = \( \frac{4 \times 100}{200} \) = \( \frac{400}{200} \) = 2% chance to win the raffle.
What is -2x7 x 9x3?
| 7x3 | |
| 7x10 | |
| 7x21 | |
| -18x10 |
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:
-2x7 x 9x3
(-2 x 9)x(7 + 3)
-18x10
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 20% off." If Damon buys two shirts, each with a regular price of $48, how much will he pay for both shirts?
| $86.40 | |
| $67.20 | |
| $38.40 | |
| $55.20 |
By buying two shirts, Damon will save $48 x \( \frac{20}{100} \) = \( \frac{$48 x 20}{100} \) = \( \frac{$960}{100} \) = $9.60 on the second shirt.
So, his total cost will be
$48.00 + ($48.00 - $9.60)
$48.00 + $38.40
$86.40
Which of the following is not an integer?
-1 |
|
0 |
|
\({1 \over 2}\) |
|
1 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
What is \( \sqrt{\frac{64}{16}} \)?
| 2 | |
| \(\frac{2}{3}\) | |
| \(\frac{2}{9}\) | |
| 1\(\frac{1}{8}\) |
To take the square root of a fraction, break the fraction into two separate roots then calculate the square root of the numerator and denominator separately:
\( \sqrt{\frac{64}{16}} \)
\( \frac{\sqrt{64}}{\sqrt{16}} \)
\( \frac{\sqrt{8^2}}{\sqrt{4^2}} \)
\( \frac{8}{4} \)
2