Answer:
3
Step-by-step explanation:
<h3>What is sequence ?</h3>
- A sequence is a set of the objects or numbers in a specific order.
- It is a function whose domain is a set of natural numbers or non-negative integers i.e. {1, 2, 3,..}
- Sequence and series is one of the basic topics in Arithmetic.
- An itemized collection of elements in which repetitions of any sort are allowed is known as a sequence, whereas series is the sum of all elements.
- An arithmetic progression is one of the common examples of sequence and series.
"An arithmetic sequence is a linear function whose domain is restricted to the set of non-negative integers."
The general form an arithmetic sequence is:

- The function is linear.
- The sequence consists of either numbers that are increasing or decreasing based on the value of d, the common difference.
So, the statement provided is True.
Learn more about arithmetic sequence
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Answer:-2
Step-by-step explanation:
(n + 3) 5 = 3 x 1 - n
distribute so 5n + 15= 3 - n
subtract three from both sides
5n - 12 = -n
subtract 5n from both sides
12 = −6n
Divide both sides by -6
n=-2
Answer: x ≈ 18 ft
Step-by-step explanation:
We will use our trig knowledge to solve this.
The man is standing 10 ft away, but we also need to add the 5 ft shadow as well as that is a point on our triangle.
We can set up a simple trig equation of: tan(50) = x/15
x being the height of the lamppost.
Now we solve.
tan(50) = 1.1918
1.1918 *15 = x
x = 17.876
Now round to the nearest foot.
x ≈ 18 ft
3000000
Move the decimal 6 places to the right.
Hope this helps.