72b384 is a number in which one of its digits is ‘b'. If the number is a multiple of 9, what is the numerical value of ‘b'?
1 answer:
A number is divisible by 9 if and only if the sum of its digits is divisible by 9.
So, the sum of the digits of your number is
Since b ranges from 0 to 9 (it is a digit and it can't have any other values), 24+b ranges from 24 to 33. The only multiple of 9 in this range is 27, which we obtain by choosing b=3.
So, the only way to choose a value for b in order to make your number divisible by 9 is choosing b=3 and thus getting the number 723384, and indeed we have
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Answer:
The 75th term of the arithmetic sequence -17, -13, -9.... is:
Step-by-step explanation:
Given the sequence
An arithmetic sequence has a constant difference 'd' and is defined by
computing the differences of all the adjacent terms
The difference between all the adjacent terms is the same and equal to
The first element of the sequence is:
now substitute and
in the nth term of the sequence
Now, substitute n = 75 in the sequence to determine the 75th sequence
Therefore, the 75th term of the arithmetic sequence -17, -13, -9.... is: