The easiest way to solve this is to create an equation. Let's let the variable n represent the unknown number.
1/3(4n - 4) = -6
First, we should divide both sides by 1/3, to cancel it out on the left side of the equation.
4n - 4 = -18
Next, we should add 4 to both sides to cancel out the -4 on the left side.
4n = -14
Finally, we should divide both sides by 4, to get the variable n alone on the left side.
n = -3.5
Therefore, the number is -3.5.
You know that this is the answer because if you plug it back into the orginal equation it works.
:)
The n-th term a[n] is given by
.. a[n] = 4*(-5)^(n -1)
Then
.. a[7] = 4*(-5)^6 = 62,500
The 3rd selection is appropriate.
Answer:
Step-by-step explanation:
when adding a negative plus a positive, count forward the amount you're adding from the negative number. Like -5+2, -5--> -4--> -3