Find the formula for df-1/dx.f(x) = x5/7
A. x7/5
B. 
x-2/7
C. x-2/5
D. 
x2/5
Answer: D
Mathematics
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Solve the problem.In a certain lottery, 3 different numbers between 1 and 12 inclusive are drawn at random. These are the winning numbers. If you choose 3 different numbers at random between 1 and 12, what is the probability you will match the winning numbers? Assume that the order of the numbers is unimportant.
A. 
B. 
C. 
D. 
Mathematics
Rationalize the denominator.
A. 
B. 1
C. 
D. 
Mathematics
Use a calculator to find the value of the expression in radian measure rounded to two decimal places.sec-1 
A. 78.46 B. 0.20 C. 11.54 D. 1.37
Mathematics
Find the composite function for the given functions.f ? g for f(x) = 
x and g(x) = - 
x
A. x B. 1 C. 0 D. -x
Mathematics