| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.58 |
| Score | 0% | 72% |
What is \( 2 \)\( \sqrt{28} \) - \( 3 \)\( \sqrt{7} \)
| 6\( \sqrt{4} \) | |
| \( \sqrt{7} \) | |
| 6\( \sqrt{196} \) | |
| -1\( \sqrt{7} \) |
To subtract these radicals together their radicands must be the same:
2\( \sqrt{28} \) - 3\( \sqrt{7} \)
2\( \sqrt{4 \times 7} \) - 3\( \sqrt{7} \)
2\( \sqrt{2^2 \times 7} \) - 3\( \sqrt{7} \)
(2)(2)\( \sqrt{7} \) - 3\( \sqrt{7} \)
4\( \sqrt{7} \) - 3\( \sqrt{7} \)
Now that the radicands are identical, you can subtract them:
4\( \sqrt{7} \) - 3\( \sqrt{7} \)Damon loaned Monty $100 at an annual interest rate of 7%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $50 | |
| $88 | |
| $7 | |
| $25 |
The yearly interest charged on this loan is the annual interest rate multiplied by the amount borrowed:
interest = annual interest rate x loan amount
i = (\( \frac{6}{100} \)) x $100
i = 0.07 x $100
i = $7
Which of the following is not an integer?
0 |
|
1 |
|
\({1 \over 2}\) |
|
-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 the next number in this sequence: 1, 5, 9, 13, 17, __________ ?
| 26 | |
| 21 | |
| 15 | |
| 13 |
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
10 members of a bridal party need transported to a wedding reception but there are only 2 4-passenger taxis available to take them. How many will need to find other transportation?
| 9 | |
| 3 | |
| 5 | |
| 2 |
There are 2 4-passenger taxis available so that's 2 x 4 = 8 total seats. There are 10 people needing transportation leaving 10 - 8 = 2 who will have to find other transportation.