Hello!
The independent variable here is <u>whether or not the group received a calculator.</u> This is the factor that is being changed, and this is what is going to affect the results of the test.
The dependent variable in this case is the seventh graders' <u>speed solving the integer problems.</u> This is because this is the variable being affected by the independent variable - whether they have a calculator.
The controlled variables in this case would be both groups are <u>seventh graders, and they are both solving integer problems.</u> These need to maintain constant as if not, they can affect the dependent variable as well.
Hope this helps!
1 lap = 400 meters
Therefore, we can use something called "dimensional analysis" to convert from laps to meters. We use equivalent quantities to do so. Since 1 lap = 400 meters, we can say
1 = 400 meters / 1 lap.
This gives us a "conversion factor" between laps and meters. Since we know we have traveled 8 laps, we can multiply this by our conversion factor (which we have defined to be equal to 1!):
8 laps * 1 = 8 laps * 400 meters / 1 lap
Now we can cancel words the same way we cancel numbers in a fraction. If we have 4 / 4, we cancel the 4's and get 1. Similarly, in the above we can cancel the "lap" with the "lap" on the bottom of the fraction of the conversion factor. Then we have:
8 laps = 3200 meters
Answer is: 60x=240
240/60=40
Answer:
They averaged 79 km per hour
Step-by-step explanation:
To find the average distance, take the kilometers and divide by the hours
1106 km/ 14 hours
79 km / hours
They averaged 79 km per hour
W= 3 because 5 times 3 equals 15.