The method of least squares is a widely used method of fitting curve for a given data
Step-by-step explanation:
It is the most popular method used to determine the position of the trend line of a given time series. The trend line is technically called the best fit. ... The sum of the deviations of y from their corresponding trend values is zero.
The answer is -2 because -5m=10
10/-5=-2 m=-2
Answer:
100 revolitions
Step-by-step explanation:
180s = 3min
50s = 1min
50 * 2 = 100
(a)
Let's assume
number of nickels is n
total number of coins is 21
so, number of dines will be 21-n
1 nickel =$0.05
1 dimes=$0.10
total value is 1.65
so, we can set up equation
![0.05*n+0.10*(21-n)=1.65](https://tex.z-dn.net/?f=0.05%2An%2B0.10%2A%2821-n%29%3D1.65)
now, we can solve for n
![n=9](https://tex.z-dn.net/?f=n%3D9)
so, number of nickels is 9
number of dimes is 21-9=12..........Answer
(b)
we are given
value of the nickels =5n
we know that
value of dimes =2* value of nickels
so, we can plug it
value of dimes =2*5n
value of dimes =10n...............Answer
![\sf\dfrac{2}{13}+\dfrac{5}{13}](https://tex.z-dn.net/?f=%5Csf%5Cdfrac%7B2%7D%7B13%7D%2B%5Cdfrac%7B5%7D%7B13%7D)
Add the numerators and keep the denominator: