Answer:
a(87) = -590
Step-by-step explanation:
Notice how each term of this arithmetic sequence is equal to the sum of the previous term and the common difference, -12.
The general formula a(n) = a(1) + (n - 1)d becomes:
a(n) = 12 - 7(n - 1)
and the 87th term a(87) = 12 - 7(87 - 1), or
a(87) = 12 - 7(86)
a(87) = -590
Answer:
Where did 15 and 16 come from?
Grid lines on maps define the coordinate system, and are numbered to provide a unique reference to each location on the map
Answer:
Identity property on multiplication
Step-by-step explanation:
If you multiply any number by 1, you will get the same number.
15 * 1 = 15 ; 25* 1 = 25