Answer: y=38
x=38
z=109
Step-by-step explanation:
because
When a negative number is divided by another negative number, <span>sign of the quotient would be positive and always positive</span>
Given:
.
Exponential regression model is
To find:
The exponential regression representing the population of Lazy Town as a function of time in years.
Solution:
Exponential regression model is
...(i)
We have, .
Substituting and in (i), we get.
Therefore, the exponential regression representing the population of Lazy Town as a function of time in years, is .
x+y-z+w = 10--------(1)
x+3y-4z+5w=26------(2)
x+4y-7z+7w = 37-------(3)
x+2y-3z+6w = 22--------(4)
Subtract equation (1) from (2)
x+3y-4z+5w - (x+y-z+w) = 26 - 10
2y + -3z - 4w = 16-----------------------------(5)
Subtract equation (1) from (3)