Answer:
2.9106
Step-by-step explanation:
According to the information of the problem
Year 75 76 77 78 79 80 81 82 83 84 85 86 87
Lean 642 644 656 667 673 688 696 698 713 717 725 742 757
If you use a linear regressor calculator you find that approximately
![y = 9.318 x - 61.123](https://tex.z-dn.net/?f=y%20%3D%209.318%20x%20-%2061.123)
so you just find
and then the predicted value would be 106mm
therefore the predicted value for the lean in 1918 was 2.9106
Answer:
3
Step-by-step explanation:
because if you look closely at the graph you see
Answer:
![D(t)=100(0.4)^t](https://tex.z-dn.net/?f=D%28t%29%3D100%280.4%29%5Et)
Step-by-step explanation:
The temp is 100 at time t = 0
After 1 sec, the temp difference would be:
![100-(\frac{100-60}{100})](https://tex.z-dn.net/?f=100-%28%5Cfrac%7B100-60%7D%7B100%7D%29)
After 2 sec, the temp difference would be:
![100-(\frac{100-60}{100})^2](https://tex.z-dn.net/?f=100-%28%5Cfrac%7B100-60%7D%7B100%7D%29%5E2)
Similarly for 3 seconds, 4 seconds etc.
We notice that the parenthesis part is 40% of it, so we can also write:
100(40%)^t,
where
t is the time
40% can be written as 40/100 = 0.4
SO, the function is:
![d(t)=100(0.4)^t](https://tex.z-dn.net/?f=d%28t%29%3D100%280.4%29%5Et)
Answer:
Sorry bro I didn't understand