Solving the system we get, x= -1, y= -2 and z= 0
Step-by-step explanation:
Solving the equations to find x, y and z

Adding eq(1) and eq(2)

Adding eq(2) and eq(3)

Multiplying eq(4) by 3 and eq(5) by 2

So, value of z =0
Putting value of z in eq(4)

So, value of x = -1
Now putting value of z=0 and x =-1 in equation 1

So, value of y = -2
So, solving the system we get, x= -1, y= -2 and z= 0
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The first term of this series (a+1) is 1 and the common ratio (r) is -3.
Thus, the explicit formula is a_n = 1*(-3)^(n-1).
Must check this! suppose we try to calculate the 3rd term. Then n = 3.
a_3 = 1*(-3)^(3-1) = (-3)^2 = 9. This is correct.
Answer:
$31.5
Step-by-step explanation:
they have the same amount of sides as they do angles,