Simplify the expression. Assume that all variables are positive when they appear.-
A. 2x12y18
B. 4x12y12
C. 2x12y12
D. -2x36y12
Answer: C
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Compare the right-hand and left-hand derivatives to determine whether or not the function is differentiable at the point whose coordinates are given.
y = 
y = -1
A. Since limx?-1+ f '(x) = -1 while limx?-1- f '(x) = 0, f(x) is not differentiable at 
B. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = 1, f(x) is not differentiable at 
C. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = -1, f(x) is not differentiable at 
D. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = 0, f(x) is differentiable at 
Given a group of students: 
or 
list and count the different ways of choosing the following officers or representatives for student congress. Assume that no one can hold more than one office.A male president and three representatives
A. ABCD, ACDE, CABD, CABE, EABC, EABD; 6 B. ABCD, CABD, CABE, EABD, ADCB, AEDC, CDBA, ECBA, EDBA; 9 C. ABCD, ACDE, ABCE, ABDE, CABD, CABE, CBDE, CADE, EABC, EABD, EBCD, EACD; 12 D. ABCD, CABD, EABC; 3
Find the derivative.y = 9x2e-x
A. 9xe-x(x + 2) B. 18xe-x(1 - x) C. 9xex(2 - x) D. 9xe-x(2 - x)
Provide an appropriate response.Find 8.5% of 0.3.
A. 0.255 B. 0.0255 C. 0.353 D. 3.529