Step-by-step explanation:
this is an arithmetic sequence :
a1 = 1
an = an-1 + 2 = a1 + (n-1)×2
the sum of n terms of an arithmetic sequence is
S = n×(a1 + an)/2
n = 5000
an = a1 + 4999×2 = 9999
S = 5000×(1 + 9999)/2 = 5000×5000 = 25,000,000
Answer:
6 pages a day
Step-by-step explanation:
3 + 5 + 10 = 18 pages
18 pages / 3 days = 6 pages a day
Answer:
enlargement and the scale factor is 6.4 feet per inch
Step-by-step explanation:
Answer:
a-6+4=10
Step-by-step explanation:
b-6+4=10