In a batch of 13 tires, 3 are known to be defective. If 4 tires are chosen at random, find the probability that all 4 tires are good.
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Please enter your answer as a fraction.
What will be an ideal response?
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the xy-plane excluding x = 0; range: real numbers z ? 0; level curves: parabolas 
B. Domain: all points in the xy-plane excluding x = 0; range: all real numbers; level curves: parabolas 
C. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: parabolas 
D. Domain: all points in the xy-plane; range: all real numbers; level curves: parabolas 
Provide an appropriate response. A road sign at the top of a mountain indicates that for the next 8 miles the grade is 11%. Find the angle of declination.
A. 83.7° B. 43.3° C. 46.7° D. 6.3°
Find the median for the data given.Number of miles round trip to swim meets: 14, 20, 30, 41, 61, 67, 86
A. 30 miles B. 46 miles C. 61 miles D. 41 miles
Find the domain of the rational function.h(x) = 
A. {x|x ? 0} B. {x|x ? -5} C. all real numbers D. {x|x ? 5}