| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.56 |
| Score | 0% | 71% |
Roger loaned Alex $600 at an annual interest rate of 9%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $84 | |
| $54 | |
| $48 | |
| $2 |
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 $600
i = 0.09 x $600
i = $54
A sports card collection contains football, baseball, and basketball cards. If the ratio of football to baseball cards is 5 to 2 and the ratio of baseball to basketball cards is 5 to 1, what is the ratio of football to basketball cards?
| 1:4 | |
| 1:1 | |
| 25:2 | |
| 5:6 |
The ratio of football cards to baseball cards is 5:2 and the ratio of baseball cards to basketball cards is 5:1. To solve this problem, we need the baseball card side of each ratio to be equal so we need to rewrite the ratios in terms of a common number of baseball cards. (Think of this like finding the common denominator when adding fractions.) The ratio of football to baseball cards can also be written as 25:10 and the ratio of baseball cards to basketball cards as 10:2. So, the ratio of football cards to basketball cards is football:baseball, baseball:basketball or 25:10, 10:2 which reduces to 25:2.
What is the next number in this sequence: 1, 4, 7, 10, 13, __________ ?
| 11 | |
| 16 | |
| 18 | |
| 15 |
The equation for this sequence is:
an = an-1 + 3
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 + 3
a6 = 13 + 3
a6 = 16
What is \( \frac{8}{6} \) + \( \frac{5}{14} \)?
| 1 \( \frac{8}{42} \) | |
| 1 \( \frac{5}{42} \) | |
| 1\(\frac{29}{42}\) | |
| 2 \( \frac{2}{5} \) |
To add these fractions, first find the lowest common multiple of their denominators. The first few multiples of 6 are [6, 12, 18, 24, 30, 36, 42, 48, 54, 60] and the first few multiples of 14 are [14, 28, 42, 56, 70, 84, 98]. The first few multiples they share are [42, 84] making 42 the smallest multiple 6 and 14 share.
Next, convert the fractions so each denominator equals the lowest common multiple:
\( \frac{8 x 7}{6 x 7} \) + \( \frac{5 x 3}{14 x 3} \)
\( \frac{56}{42} \) + \( \frac{15}{42} \)
Now, because the fractions share a common denominator, you can add them:
\( \frac{56 + 15}{42} \) = \( \frac{71}{42} \) = 1\(\frac{29}{42}\)
Which of the following is not an integer?
1 |
|
0 |
|
-1 |
|
\({1 \over 2}\) |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.