The asnwer will be in the picture down below ^^
Answer: Ok, let's think our dependent variable like the position of a car with velocity of 50km/h, and our independent variable the time.
so, you can choose any time you want, and for each time, the car will be in a different position, so the position is a variable dependent of the time.
let's suppose you don't know the velocity of the car.
first you see the position at a time t₁ and the position is r₁.
then you see the position at time t₂, and the result is r₂.
here you changed the independent variable and observed how the dependent variable changed. And in this case, with the 4 numbers you observed you can obtain the velocity of the car.
So yes, you can call it an experiment.
Hope it can help u, but i dont known it right or wrong, if any wrong, it is very sorry for you...
x=3/7 Decimal is x=<em><u>0.428571</u></em><em> wanted to take an extra step and im glad to help</em>
0.073.
2SF is 2 numbers excluding preliminary zeros,
In this case you look at the third digit, 8, and then round up to 0.073.
:)