Add or subtract as indicated.(21x + 10xy - 11y) - (18x - 23xy - 17y)
A. 3x + 33xy + 6y
B. 11x - 3xy + 28
C. 42xy
D. 3x - 33xy - 28y
Answer: A
Mathematics
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Find the domain of the given function f and find where it is increasing and decreasing, and also where it is concave upward and where it is concave downward. Identify all extreme values and points of inflection. Then sketch the graph of y = f(x). f(x) = xe-7x
What will be an ideal response?
Mathematics
Solve.Three squares with areas of 125 cm2, 80 cm2, and 45 cm2 are displayed on a computer screen. What is the sum (in radical form) of the perimeter of these squares?
A. 12
cm
B. 40
cm
C. 24
cm
D. 48
cm
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Plot the number in the complex plane.3 + 4i
A. 
B. 
C. 
D. 
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Express as a sum of logarithms.log2 xy
A. log2 x - log2 y B. log2 x + log2 y C. log1 x - log1y D. log1 x + log1 y
Mathematics