早教吧 育儿知识 作业答案 考试题库 百科 知识分享

一道SAT数学题,求解!P769/58,17,26,35,44,...Thefirst5termsinasequenceareshownabove.Eachtermafterthefirstisfoundbyadding9tothetermimmediatelyprecedingit.Whichterminthissequenceisequalto8+(26-1)9?答案选(D

题目详情
一道SAT数学题,求解!P769/5
8,17,26,35,44,...
The first 5 terms in a sequence are shown above. Each term after the first is found by adding 9 to the term immediately preceding it. Which term in this sequence is equal to 8+(26-1)9?
答案选(D)第26项
为什么啊?总也想不通!
▼优质解答
答案和解析
哪里不懂?
项的公式可以简略为
8+9(N-1)
当然是第26项嘛