Solve.
+ 4 = 5
A. 81
B. -1
C. 1
D. empty set solution
Answer: C
You might also like to view...
Evaluate the polynomial.3x2 - 6x - 1, when x = 2
A. -7 B. -11 C. -5 D. -1
Provide an appropriate response.
A fisherman wants to know the distance across a river. He sights a tree that he calls point A, and then walks down the river 40 feet at a ninety-degree angle. He then sights the same tree (point A) at an angle of 47°. How wide is the river? 
A. 27 ft B. 37 ft C. 43 ft D. 29 ft
Simplify by factoring. Assume that any variable in a radicand represents a positive real number.
A. 2xy
B. x4y4
C. 2x4y4
D. 2x4y4
Provide an appropriate response.It can be shown that an ellipse with foci (c, 0) and (-c, 0) where the sum of the distances from any point (x, y) of the ellipse to the two foci is 2a has equation 
+ 
= 1. Use this result to find an equation of an ellipse with foci (3, 0) and (-3, 0), where the sum of the distances from any point of the ellipse to the two foci is 10.
A. x2 + y2 = 100
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1