Question

By the common difference of an Ap is 5, then a18-a13
is ​

Answer 1

Answer:

Given, common difference of the AP,

d=5

We know that,

an =a1 +(n−1)d

Then,

a18 =a1 +17×da13 =a1 +12×d

Solving the two equations,

a18−a13=a1 +17d−a1−12d

a18−a13 =5d,

Substituting d=5,

a18 −a13 =25

Answer 2

Answer:

ᴛʜᴜɴᴅᴇʀsᴛᴏʀᴍs ᴅᴇᴠᴇʟᴏᴘ ɪɴ ʜᴏᴛ ᴀɴᴅ ʜᴜᴍɪᴅ ᴀʀᴇᴀs. ʜɪɢʜ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ɪɴ ᴛʜɪs ᴀʀᴇᴀs ᴄᴀᴜsᴇ ʜᴏᴛ ʜᴜᴍɪᴅ (ᴡɪᴛʜ ᴡᴀᴛᴇʀ ᴠᴀᴘᴏᴜʀs) ᴀɪʀ ᴛᴏ ʀɪsᴇ ᴜᴘ. sᴏ, sᴛʀᴏɴɢ ᴜᴘᴡᴀʀᴅ ʀɪsɪɴɢ ᴡɪɴᴅs ᴡɪᴛʜ ᴡᴀᴛᴇʀ ᴅʀᴏᴘʟᴇᴛs ᴀʀᴇ ɢᴇɴᴇʀᴀᴛᴇᴅ. ... ᴜᴘᴡᴀʀᴅ ᴍᴏᴠᴇᴍᴇɴᴛ ᴏғ ᴀɪʀ ᴀɴᴅ ᴅᴏᴡɴᴡᴀʀᴅ ᴍᴏᴠᴇᴍᴇɴᴛ ᴏғ ᴡᴀᴛᴇʀ ᴅʀᴏᴘs, ᴛᴏɢᴇᴛʜᴇʀ, ᴄᴀᴜsᴇ ʟɪɢʜᴛɴɪɴɢ ᴀɴᴅ sᴏᴜɴᴅ.