The arithmetic sequence general formula is an = a1 + d *(n-1) where d is the arithmetic difference and n is an integer. In this case, upon derivation, the formula that represents the sum of the series is S = (a1 + an)*(n/2). Substituting, S = (3+75)*(10/2) equal to 390
Answer:
im not sure but i got 30.1
Step-by-step explanation:
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Answer: 55
The angles that measures 125 and y make a linear pair (equal 180)
So you just do 180-125 to get y
Answer:
11%
Step-by-step explanation:
The percentage of the discount is 1012/9200 x 100 = 11%