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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

1. What must be the value of k so that 5k-3, k+2, and 3k-11 will form an arithmetic sequence?

2. which term of the arithmetic sequence whose first term is -3,common difference is 2, and last term is 23? 3. find a sub 1 if a sub 8=54 and a sub 9=60. 4. find the 9th term of the arithmetic sequence with asub1 =10 and d= -1/2 5. give the arithmetic sequence of 5 terms if the first term is 8 and the last term is 100.

For number 1: m-1=2-m that's the solution. Where m is the Mean or the middle term.

For number 3: an=a1+(n-1)d is the solution. Where an is the last term, n is the number of term used in the last term and d is the common difference.

Number 4 is the same with number 3: an=a1+(n-1)d where a1 is the first term which is 10, n is the specific term that you are finding which is 9 and d as the common difference which is -½