Question

Check whether -150 is a term of the A.P. 11, 8, 5, 2, …

Find the 31st term of an A.P. whose 11th term is 38 and the 16th term is 73.

Answer 1

$\fbox\red{A}\fbox\orange{N}\fbox\purple{S}\fbox\green{W}\fbox\blue{E}\fbox\pink{R}$

Required answer-:

1. Check whether -150 is a term of the A.P. 11, 8, 5, 2, …

$\rightarrow$The given sequence is 11, 8, 5, 2,.... –151. Hence, 55th term is number –151.

2. Find the 31st term of an A.P. whose 11th term is 38 and the 16th term is 73.

$\rightarrow$We know that

a 11 = 38 so ,

a+ 10d =38

a16=73 so,

a+15d = 73

by equating them by elimination method we get d =7

now substitute the vale of d in any of the eq.

we get :

a +10d=38

a +10[7] =38

a= -32

now we should find out the 31st term so

a31=a +[n-1]d

= -32 +30 * 7

=-32+210

=178

Therefore the 31st term is 178.

❥____________________________________

ᴘʟᴇᴀsᴇ ᴛʜᴀɴᴋ ᴍʏ ᴀɴsᴡᴇʀs

⬇⬇⬇⬇

Answer 2

Answer:

ohk

can u say what r they

I mean what type of video's do they put