Solve the problem.If an automobile is traveling at velocity V (in feet per second) , the safe radius R for a curve with superelevation ? is given by the formula 
where f and g are constants. A road is being constructed for automobiles traveling at 49 miles per hour. If 
and 
calculate R. Round to the nearest foot. (Hint: 1 mile =
5280 feet)
A. R = 1161 ft
B. R = 731 ft
C. R = 695 ft
D. R = 711 ft
Answer: D
Mathematics
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Evaluate the integral.
A. 
B. 
C. 2
D. 2
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Evaluate the integral. 
A. -sin-1
- 
+ C
B. 
+ 2 ln
+ C
C. 
- 2 ln
+ C
D. 
- sin-1
+ C
Mathematics
Combine, if possible.4
+ 7
A. 11
B. 
C. 12
D. 10
Mathematics
Solve using the addition principle.-12 = 27 + f
A. 39 B. -15 C. -39 D. 15
Mathematics