Solve this simultaneous equation 4x+3y=18 x-3y=7
2 answers:
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Answer:
<em>Answer: D</em>
Step-by-step explanation:
<u>Arithmetic Sequences </u>
The arithmetic sequences are those where any term n is obtained by adding or subtracting a fixed number to the previous term. That number is called the common difference.
The equation to calculate the nth term of an arithmetic sequence is:
Where
an = nth term
a1 = first term
r = common difference
n = number of the term
We are given the arithmetic sequence:
10, 12, 14, 16, ...
Where a1=10 and
r = 12 - 10 = 2
Thus the general term is:
Operating:
Answer: D
Unit rate always have the denominator of 1 so:
= 360 ÷ 30 = 12 customer in 1 day so the answer is:
12 is costumer and 1 is day.