Question

Find

Answer 1

@karim728 @Nnesha @imqwerty

Answer 2

@hadeel

Answer 3

@helpppp

Answer 4

Yeahh I don't remember this stuff

Answer 5

General form for nth term =a+(n-1)d
a_14=a+13d=-33
a_15=a+14d=9

Solve for a & d and replace their respective values in the general form for nth term.

Answer 6

an = a + (n - 1)b

-33 = a + (14-1)b -> -35 = a + 13b
9 = a + (15-1)b ---> 9 = a + 14b

Use elimination
-33 = a + 13b
9 = a + 14b
------------- --
- 42 = -b
b = 42

9 = a + 14b
9 = a + 14*(42)
a = -579

an = a + (n-1)b
an = -579 + 42(n-1)

Answer 7

nice job @Kevin - really very nice

Answer 8

@jhonyy9 Thx..