| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.67 |
| Score | 0% | 73% |
Which of the following is a mixed number?
\({5 \over 7} \) |
|
\(1 {2 \over 5} \) |
|
\({7 \over 5} \) |
|
\({a \over 5} \) |
A rational number (or fraction) is represented as a ratio between two integers, a and b, and has the form \({a \over b}\) where a is the numerator and b is the denominator. An improper fraction (\({5 \over 3} \)) has a numerator with a greater absolute value than the denominator and can be converted into a mixed number (\(1 {2 \over 3} \)) which has a whole number part and a fractional part.
Which of the following is not an integer?
1 |
|
-1 |
|
0 |
|
\({1 \over 2}\) |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 5% off." If Roger buys two shirts, each with a regular price of $12, how much will he pay for both shirts?
| $23.40 | |
| $14.40 | |
| $16.80 | |
| $0.60 |
By buying two shirts, Roger will save $12 x \( \frac{5}{100} \) = \( \frac{$12 x 5}{100} \) = \( \frac{$60}{100} \) = $0.60 on the second shirt.
So, his total cost will be
$12.00 + ($12.00 - $0.60)
$12.00 + $11.40
$23.40
How many 12-passenger vans will it take to drive all 48 members of the football team to an away game?
| 6 vans | |
| 4 vans | |
| 17 vans | |
| 10 vans |
Calculate the number of vans needed by dividing the number of people that need transported by the capacity of one van:
vans = \( \frac{48}{12} \) = 4
What is the next number in this sequence: 1, 4, 10, 19, 31, __________ ?
| 47 | |
| 46 | |
| 53 | |
| 51 |
The equation for this sequence is:
an = an-1 + 3(n - 1)
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(6 - 1)
a6 = 31 + 3(5)
a6 = 46