Find inverse of the matrix.  figure 1.png)
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Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.
+ 
+ 
+ ... + 
+ ...
A. 
; 2
B. 
; 1
C. 
; 1
D. 
; 2
All references are to the figure below. The distance between A and P is x, and the distance between A and C is y. 
Assuming that B = 63° and x = 24, find A and r.
A. A = 27°, r ? 20. B. A = 37°, r ? 20 C. A = 27°, r ? 20 D. A = 37°, r ? 19
Solve.While traveling at a constant speed in a car, the centrifugal acceleration passengers feel while the car is turning is inversely proportional to the radius of the turn. If the passengers feel an acceleration of 4 feet per second per second when the radius of the turn is 40 feet, find the acceleration the passengers feel when the radius of the turn is 80 feet.
A. 2 feet per second per second B. 4 feet per second per second C. 3 feet per second per second D. 5 feet per second per second
Use the order of operations to simplify the expression.
2 ? 
A. 
B. 
C. 
D. 