A formula for determining the finite sum, S, of an arithmetic sequence of numbers is S = [(a+b), where n is the number of terms, a is the first term, and b is the last term.
Express b in terms of a, S, and n.

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2

3 qrs + 3/2 xy hope this : /

step-by-step explanation:

96 cm is the answer.