Respuesta :
Answer:
10.23
Step-by-step explanation:
I took this test like 5 minutes ago the rest are pretty easy questions!
The mean value she would use to compare with the other cars is 10.23 seconds
How to find mean of values
- Mass of the car = 250 grams
- Number of trials = 3
Time recorded = 10 seconds, 10.3 seconds and 10.4 seconds respectively.
Mean = Total time recorded Γ· Number of trials
= (10 + 10.3 + 10.4) Γ· 3
= 30.7 Γ· 3
= 10.2333333333333
Approximately,
10.23
Learn more about mean of values:
https://brainly.com/question/14532771