Question 195585
solution for 1st question
sol:
1st term in arithematic sequence (a)=4
commom difference (d)= -0.8

the nth term in arithematic sequence is
tn= a+(n-1)*d
now we find out the 11th term in arithematic sequence
n=11
a=4
d= -0.8
substitute these values in the above formula we get
t11= 4+(11-1)*(-0.8)
t11=4+(10)*(-0.8)
t11=4-8
t11= -4
11 th term in arithematic sequence is -4