To find your missing angle:
180-126 = 54
so 9x must equal 54
54= 9x
6 = x
You have too divide 2 and 7 and 8 divided by the sum and that’s your answer
514 divided by 28 equals 18.3571429
The problem is an arithmetic sequence with:
a₁ = 206,300
an = 208,400
n = 2013 - 2000
n = 13
To find the annual increase, use this following formula
an = a₁ + d(n - 1)
d represents the annual increase
Input the numbers
an = a₁ + d(n - 1)
289,400 = 206,300 + d(13 - 1)
289,400 = 206,300 + 12d
289,400 - 206,300 = 13d
83,100 = 12d
12d = 83,100
d = 83,100/12
d = 6,925
The annual increase is $6925
The answer is c. its very simple.
