Answer:
10*(2)^(n-1)
Step-by-step explanation:
The common ratio of the sequence is 20/10=40/20=2.
The first term is 10 so the equation is 10*(2)^(n-1)
-5, because when plugging the -1 in for x then multiplying it by 5, you get -5
X + Y = 89
X - Y = 13
So, X = 13 +Y
(13 +Y) + Y = 89
2Y = 89 - 13
Y = 38
X= 51 (13+38)
The sum of the interior angles of a quadrilateral is 360:

Which means that

Plug the values for R, T and Q to get
