| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.64 |
| Score | 0% | 73% |
A triathlon course includes a 200m swim, a 40.4km bike ride, and a 15.4km run. What is the total length of the race course?
| 40.9km | |
| 62km | |
| 60.8km | |
| 56km |
To add these distances, they must share the same unit so first you need to first convert the swim distance from meters (m) to kilometers (km) before adding it to the bike and run distances which are already in km. To convert 200 meters to kilometers, divide the distance by 1000 to get 0.2km then add the remaining distances:
total distance = swim + bike + run
total distance = 0.2km + 40.4km + 15.4km
total distance = 56km
What is the next number in this sequence: 1, 5, 13, 25, 41, __________ ?
| 61 | |
| 59 | |
| 53 | |
| 66 |
The equation for this sequence is:
an = an-1 + 4(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 + 4(6 - 1)
a6 = 41 + 4(5)
a6 = 61
If a car travels 300 miles in 4 hours, what is the average speed?
| 50 mph | |
| 45 mph | |
| 75 mph | |
| 40 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)What is 3a5 - 7a5?
| -4a5 | |
| 10a10 | |
| 4a-5 | |
| -4a-5 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so subtract the coefficients and retain the base and exponent:
3a5 - 7a5
(3 - 7)a5
-4a5
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 30% off." If Ezra buys two shirts, each with a regular price of $18, how much money will he save?
| $3.60 | |
| $6.30 | |
| $2.70 | |
| $5.40 |
By buying two shirts, Ezra will save $18 x \( \frac{30}{100} \) = \( \frac{$18 x 30}{100} \) = \( \frac{$540}{100} \) = $5.40 on the second shirt.