Solve the problem.The sum of the squares of the digits of a positive two-digit number is 20, and the tens digit is 2 more than the units digit. Find the number.
A. 35
B. 42
C. 24
D. 53
Answer: B
Mathematics
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Find the sample standard deviation.6, 7, 5, 11, 18, 14, 20, 12, 13, 18
A. 1.4 B. 4.8 C. 4.9 D. 5.3
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Determine if the relation is a function.
A. Function B. Not a function
Mathematics
Locate and classify all critical points for the given function.f(x,y) = x3 - 3xy + y3 + 3Determine only the number of critical points.
A. 2 B. 3 C. 4 D. None of the above is correct.
Mathematics
In the problem, P = (x, y) is the point on the unit circle that corresponds to the real number t. Find the exact value of the indicated trigonometric function of t.
?Find csc t.
A. 
B. 
C. - 
D. - 
Mathematics