Evaluate the determinant by expansion by minors.
A. -72
B. -117
C. 27
D. 72
Answer: D
Mathematics
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Provide an appropriate response.If y = f(x) = ex2 + 3, find the (a) relative and (b) percentage rate of change of y when x = 0.5.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Use the given triangles to evaluate the expression. Rationalize all denominators. 
sin 
A. 
B. 
C. 
D. 
Mathematics
Write the vector v in terms of i and j whose magnitude 
and direction angle ? are given.
= 10, ? = 120°
A. v = 5
i - 5j
B. v = 5i - 5
j
C. v = -5i + 5
j
D. v = -5
i + 5
j
Mathematics
Factor by grouping.x3 - 5x2 + 3x - 15
A. (x - 15)(x2 - 5x + 3) B. (x - 5)(x2 + 3) C. (x - 5)(x2 + 5) D. (x + 5)(x2 + 3)
Mathematics