The following is an arithmetic sequence.
2, 5, 8, 10 true or false

FALSE

Step-by-step explanation:

In an arithmetic sequence, the difference between two consecutive numbers is the same.

5-2=8-5 but not equal to 10-8

So FALSE

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.