The equation of nth term will be written as for n as will be (
- a₁ + d) / d. Then the correct option is D.
The missing options are attached to the picture given below.
<h3>What is a sequence?</h3>
A sequence is a list of elements that have been ordered in a sequential manner, such that members come either before or after.
The formula for the nth term of an arithmetic sequence can be found using the formula given below.

Then arrange the equation for n, we have

Then the correct option is D.
More about the sequence link is given below.
brainly.com/question/21961097
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Answer: A
Step-by-step explanation:
points
If the value of x-y is negative, and x and y are both positive.
x and y are positive numbers. To get negative number while subtracting , the value of x should be less than the value of y.
For example, 5 - 9 = -4
x is 5 and y is 9 both are positive. 5 - 9 is -4 that is negative.
5 is less than 9
From this we can conclude that the value of x is less than the value of y.
Answer:
60°
Step-by-step explanation:
All the side lengths of the triangle have the same measurement. This makes it an equilateral triangle. By the definition of an equilateral triangle, all the angles are congruent, therefore all their measurements are the same. There are 3 total angles in a triangle, and the total sum of the angel measurements of a triangle is 180. Divide 180 with 3:
180/3 = 60
60° is your answer.
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