Answer:
<u>-53</u>, f(n) = -6(n-1) + 13
Step-by-step explanation:
given the equation to this linear/arithmetic sequence for the nth term: f(n) = -6(n-1) + 13
f(12) = -6(12-1) + 13
f(12) = -6(11) + 13
f(12) = -66 + 13
f(12) = -53
*substitute and simplify*
______________
f(n) = f(1) + d(n-1)
given f(1) = 13, f(2) = 7, and f(3) = 1
7-13 = 1-7 = <u>-6</u> = d
= f(1) + d(n-1)
f(1) = <u>13</u> so
the equation must be f(n) = <u>13</u> <u>-</u><u> </u><u>6</u>(n-1) or -6(n-1) + 13
<span>3 times the sum of b and f can also be written as </span>
Answer:
12 maybe I think But I'm not surr
Answer:
Step-by-step explanation:
The exterior angles of any n-gon is 360 degrees. Remember that we are talking about convex polygons.
The exterior angles of quadrilateral is going to be 360 degrees
If the choices are the following:
tan(22.6o) = a/13
tan(22.6o) =13/a
tan(22.6o) = a/12
tan(22.6o) = 12/a
Then the equation correctly uses the value of b to solve for a is
tan(22.6o) = a/12
