Answer:
(c) 8597
Step-by-step explanation:
A tool for regression analysis shows the given population values fit an exponential curve better than they fit a line. The exponential function for the population can be written as approximately ...
p(x) = 6211.54(1.02998^x) . . . . . x is years after 2000
Then for x=11, the population is about ...
p(11) ≈ 8596.4
The closest answer choice is 8597.
The square root is about 5.66 (that is rounded)
Because the last equation already has the y eliminated so just need to get the other two to eliminate the y too
multiply 4 to the first equation to eliminate y, and you get
-4x-4y-4z=-32
-4x+4y+5z=7
now get rid of y so all you have left is
-8x+z=-25 (let call this equation #4)
now take equation #3 and #4 together to solve for one of the variables, i’ll solve for z first so i’ll get rid of x by multiply the equation #4 all by 4, you get
8x+8z=16
-8x+z=-25
solve it and get 9z= -9; z=-1
now you have z so take it and ply it into equation #3
2x+2(-1)=4
2x=6; x=3
take both of them, plug it in equation #1
-3-y-(-1)=-8
-y=-6 ; y=6
done so the answer is (x,y,z) = (3,6,-1)
Answer:
No solution
Step-by-step explanation:
There are no values of x that make the equation true; hence making it have no solution.
