Question

Identify the 25th term of the arithmetic sequence 2, 1 and 3 over 5,
1 and 1 over 5 …
@ranga

Answer 1

1. Find the common difference d.
2. Calculate the value of a+24d (a is the first term)

Answer 2

rmb each arithmetic sequence has a common difference :)
the first term is a
the second term is a+d
the third term is a+2d
the nth term is a+(n-1)d

Answer 3

is the common difference is -2/5

Answer 4

@kc_kennylau

Answer 5

yes

Answer 6

then what's the 25th term?

Answer 7

Ok hold up.

Answer 8

ok

Answer 9

-19 1/5

Answer 10

@kc_kennylau

Answer 11

um no

Answer 12

umm lol what did i do wrong

Answer 13

@kc_kennylau

Answer 14

How did you get your answer?

Answer 15

never mind let me try agaain i saw my mistake

Answer 16

-8

Answer 17

@kc_kennylau

Answer 18

nope, you forgot to minus one (a+24d not a+25d)

Answer 19

ugh so what would it be

Answer 20

@kc_kennylau

Answer 21

i did it with 24 idk what ur talking about @kc_kennylau

Answer 22

Can you show me your steps? :)

Answer 23

24*-2/5= -9 3/5+ 1 3/5=-8

Answer 24

@kc_kennylau can you reply with not having to tag you each time

Answer 25

sorry i'm doing two questions at once, so please tag me

Answer 26

How did you get -9 3/5 and 1 3/5 why are you complicating everything

Answer 27

pls can you jst show me ur steps @kc_kennylau

Answer 28

Common difference
=\(1\dfrac35-2\)
=\(\dfrac25\)

The 25th term
=\(a+24d\)
=\(2-24\times\dfrac25\)
=\(2-\dfrac{48}5\)
=\(2-9\dfrac35\)
=\(-\left(9\dfrac35-2\right)\)
=\(-7\dfrac35\)

Answer 29

so if you dont follow order of operation you would get this wrong?
@kc_kennylau

Answer 30

oh i see what you did there

Answer 31

you used the second term to add the 24*difference

Answer 32

you should use the first term

Answer 33

thank you