If −20 is the 15th term in an arithmetic sequence with a common difference of −7, what is the first term in the sequence?
1 answer:
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ANSWER: 11, 12, 13
3 consecutive integers:
"Sum" means Add
Combine like-terms
Solve for X
Subtract 3 from both sides
Divide by 3 on both sides
11 + 1 = 12
11 + 2 = 13
3 consecutive integers:
"Sum" means Add
Combine like-terms
Solve for X
Subtract 3 from both sides
Divide by 3 on both sides
11 + 1 = 12
11 + 2 = 13
The simplest form of an interest equation is A = P(1+rt)
where A = the total amount of money at the end, P = the principal (or amount of money you started with), r = the rate in percent, and t = the time in years.
In this case, P = 15000, r = 0.03 (because 3% in decimal form is 0.03), and t = 1:
So, after 1 year he will get $15450 back, making him $450 more.
where A = the total amount of money at the end, P = the principal (or amount of money you started with), r = the rate in percent, and t = the time in years.
In this case, P = 15000, r = 0.03 (because 3% in decimal form is 0.03), and t = 1:
So, after 1 year he will get $15450 back, making him $450 more.