Question

help?

http://prntscr.com/9imw66

Answer 1

@Directrix

Answer 2

t1=100, t2=105,t3=110,t4 =115
can u find common difference (d) = t2-t1

Answer 3

the common difference is 5

Answer 4

good
first term = t1 =a =

tn = a+(n-1)d
find it

Answer 5

r u doing

Answer 6

should i solve for t?

Answer 7

yes ,substitute a and d in tn

Answer 8

t= a/n+d-d/n

Answer 9

a=100,d=5 from the problem
tn = a+(n-1)d [ replace a with 100 and d with 5 and simplify]

Answer 10

tn = 100+(n-1)5 [simplify it]

Answer 11

i got http://prntscr.com/9imz2c

Answer 12

what it related about?

Answer 13

huh?

Answer 14

n th term in A.P is tn =a+(n-1)d
= 100+(n-1)5
= 100+5n- 5
= ?

Answer 15

= 5n+95

Answer 16

very good ,this is first question answer

Answer 17

ok ty

Answer 18

t1=1,t2= -5, t3= 25, t4 = -125 are i G.P


first term = t1 =a = 1

common ratio (r) = t2/t1

can u find it r

Answer 19

n th term in G.P = tn = a*r^n-1

Answer 20

-5^n-1

Answer 21

1*5^n-1

Answer 22

would the answer be C?

Answer 23

tn =1* (- 5)^n-1

tn = 1 . (-5)^n-1

Answer 24

is it clear

Answer 25

yes