Question

given a=5:d=3and an=50 find n and 5n​

Answer 1

Step-by-step explanation:

if a=5 than an=50

5n=50

n=50/5

n=10

n=10. so 5n=5*10=50.

hope it helps you...........

Answer 2

Answer:

Step-by-step explanation:

an=a+(n-1)d

50=5+(n-1)3

45=(n-1)3

15=n-1

16=n

And 5n=5*16=80

a5=a+(5-1)d

a5=5+4(3)

=5+12

=17