Convert the given product to a single radical. Assume that all variables represent positive numbers.
A. ab 
B. ab 
C. 
D. 
Answer: A
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Solve the problem.An experimental model for a suspension bridge is built. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers are both 6.25 inches tall and stand 50 inches apart. Find the vertical distance from the roadway to the cable at a point on the road 10 inches from the lowest point of the cable.
A. 1 in. B. 1.2 in. C. 4 in. D. 0.8 in.
Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. 6x - 2y - 4z = 0 B. 6x + 2y - 2z = 0 C. 6x - 2y - 4z = 6 D. 6x + 2y - 2z = 6
Express as a single logarithm and, if possible, simplify.ln 
+ ln 
A. ln (x - 25)
B. ln 
C. ln (x - 5)
D. ln 
Simplify the expression. Assume that all variables are positive when they appear.
- 2
- 3
A. -14x
B. -5x
C. -5x
D. -14x