| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.74 |
| Score | 0% | 75% |
How many hours does it take a car to travel 140 miles at an average speed of 35 miles per hour?
| 5 hours | |
| 8 hours | |
| 2 hours | |
| 4 hours |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for time:
time = \( \frac{\text{distance}}{\text{speed}} \)
time = \( \frac{140mi}{35mph} \)
4 hours
A tiger in a zoo has consumed 28 pounds of food in 4 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 77 pounds?
| 5 | |
| 8 | |
| 7 | |
| 10 |
If the tiger has consumed 28 pounds of food in 4 days that's \( \frac{28}{4} \) = 7 pounds of food per day. The tiger needs to consume 77 - 28 = 49 more pounds of food to reach 77 pounds total. At 7 pounds of food per day that's \( \frac{49}{7} \) = 7 more days.
4! = ?
4 x 3 |
|
5 x 4 x 3 x 2 x 1 |
|
4 x 3 x 2 x 1 |
|
3 x 2 x 1 |
A factorial has the form n! and is the product of the integer (n) and all the positive integers below it. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.
Which of the following is not an integer?
0 |
|
\({1 \over 2}\) |
|
1 |
|
-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, 4, 10, 19, 31, __________ ?
| 46 | |
| 51 | |
| 37 | |
| 45 |
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