Find the first term of the arithmetic sequence in which a28=423/4 and the common difference is 5/4

B) 72

Step-by-step explanation:

The n-th term of an arithmetic sequence An = a1 + (n - 1) d

Given :

a28 = 423/4 and d = 5/4

So

a28 = a1 + (28 - 1)5/4

Now plug in a28 = 423/4

423/4 = a1 + 27(5/4)

a1 = 423/4 - 27(5/4)

= 423/4 - 135/4

a1 = (423-135)/4

a1 = 288/4

a1 = 72

Thank you.

step- i d k and i d c : )

you: : 0

bye

answer: a. 13/44

step-by-step explanation: judging by the information given to us, we are looking for experimental probability. we can see that 13 males have chosen chocolate ice cream. there are 44 ice creams in total (remember that the total is always the denominator). so our answer is 13/44.