Whats the formula of the sequence 13, 27, 41, 55, ?
A. a^n = 13 + 14(n-1) B. a^n = 13(n-1) C. a^n = 13(14)^(n-1)
D. a^n = 14 + 13(n-1)

A

Step-by-step explanation:

Note the common difference between consecutive terms in the sequence.

d = 27 - 13 = 41 - 27 = 55 - 41 = 14

This indicates the sequence is arithmetic with n th term

= a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 13 and d = 14, thus

= 13 + 14(n - 1) → A

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.

just get this app called photo math it should be able to do those