| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.43 |
| Score | 0% | 69% |
7 members of a bridal party need transported to a wedding reception but there are only 2 3-passenger taxis available to take them. How many will need to find other transportation?
| 2 | |
| 7 | |
| 6 | |
| 1 |
There are 2 3-passenger taxis available so that's 2 x 3 = 6 total seats. There are 7 people needing transportation leaving 7 - 6 = 1 who will have to find other transportation.
What is \( \frac{8\sqrt{35}}{4\sqrt{7}} \)?
| \(\frac{1}{5}\) \( \sqrt{2} \) | |
| 5 \( \sqrt{\frac{1}{2}} \) | |
| 2 \( \sqrt{5} \) | |
| 2 \( \sqrt{\frac{1}{5}} \) |
To divide terms with radicals, divide the coefficients and radicands separately:
\( \frac{8\sqrt{35}}{4\sqrt{7}} \)
\( \frac{8}{4} \) \( \sqrt{\frac{35}{7}} \)
2 \( \sqrt{5} \)
Which of these numbers is a factor of 64?
| 39 | |
| 1 | |
| 57 | |
| 62 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 64 are 1, 2, 4, 8, 16, 32, 64.
What is -7z5 + z5?
| -6z-10 | |
| -6z5 | |
| 8z5 | |
| -6z10 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so add the coefficients and retain the base and exponent:
-7z5 + 1z5
(-7 + 1)z5
-6z5
Convert 5,025,000 to scientific notation.
| 5.025 x 106 | |
| 5.025 x 10-5 | |
| 0.503 x 107 | |
| 5.025 x 10-6 |
A number in scientific notation has the format 0.000 x 10exponent. To convert to scientific notation, move the decimal point to the right or the left until the number is a decimal between 1 and 10. The exponent of the 10 is the number of places you moved the decimal point and is positive if you moved the decimal point to the left and negative if you moved it to the right:
5,025,000 in scientific notation is 5.025 x 106