Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.55 m = ____ ft
A. 180.4 ft
B. 60.0 ft
C. 50.5 ft
D. 16.8 ft
Answer: A
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Evaluate the algebraic expression for the given value(s) of the variable(s).7xy ; x = -4, y = -1
A. 28 B. -28y C. -28 D. 27
Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.
A. 10
B. 4
C. 4x
D. 10x
The foci F1 and F2, the vertices V1 and V2, and the endpoints U1 and U2 of the minor axis are as labeled in the figure. Graph the ellipse and find its standard equation. (The coordinates of V1, V2, U1, and U2 are integers, and the coordinates of F1 and F2 are given.)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
- 
= 1
D. 
- 
= 1
Give the focus, directrix, and axis for the parabola.x2 = 8y
A. (2, 0), y = 2, y-axis B. (0, -2), x = -2, x-axis C. (0, 2), y = -2, y-axis D. (2, 0), x = 2, x-axis