This is an arithmetic sequence with the common difference being 1
and if u have 1 cent on day 1 and 2 cents on day 2....then on day 40, u would have 40 cents....but we need the sum of all the days..
the sum of an arithmetic sequence can be found using the formula :
sn = n(a1 + an) / 2
n = number of terms = 40
a1 = first term = 1
an = last term = 40
now we sub
s(40) = 40(1 + 40) / 2
s(40) = 40(41)/2
s(40) = 1640/2
s(40) = 820.....820 cents = $ 8.20 <== the sum
7! = 7*6*5*4*3*2*1 = 5040
None of the above
Answer:
4.422 (2 repeats)
Step-by-step explanation:
68/9 - 47/15 = 4.422
Answer:
5/4
Step-by-step explanation:
y increases by 5 for every 4 increase of x.
