A certain arithmetic sequence has this explicit formula for the nth term: an = 11 + (n - 1)(4)
The same sequence has this recursive formula:
an = an-1 +
What number belongs in the blank space in the recursive formula?

Asilkworm winds its cocoon out of one long silk fiber. to make silk thread, 3 to 10 of these silk fibers are unwound from their cocoons and combined into aa single thread with a typical length of 300 yards. choose a reasonable number of silk fibers in a thread write an equation to find the total length of the silk fibersused in 300 yards of the thread

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t