Question

in an ap d=3.6,n=5,an=7.5 what is a?​

Answer 1

hey!

7.5=a+12.4

=>a= -4.9

thanks!

Answer 2

Step-by-step explanation:

An=a+(n-1)d

7.5=a+(4)3.6

a=7.5-14.4

a=-6.9