Evaluate the expression (5+10i)(7-9i) and write the result in the form a + bi.
What will be an ideal response?
125 + 25i
Mathematics
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Show that the function is a solution of the wave equation.w(x, t) = sin (10x + 10ct)
A. No B. Yes
Mathematics
The figure shows the graph of a function. At the given value of x, does the function appear to be differentiable, continuous but not differentiable, or neither continuous nor differentiable?x = -1
A. Differentiable B. Continuous but not differentiable C. Neither continuous nor differentiable
Mathematics
Find the vertex of the parabola and determine if it is a maximum or minimum. y = 2x2 + 12x + 20
A. (-3, -2); maximum B. (-3, 2); minimum C. (-3, 2); maximum D. (-3, -2); minimum
Mathematics
Convert the following.74 days to weeks and days
A. 14 weeks and 5 days B. 9 weeks and 4 days C. 10 weeks and 4 days D. 10 weeks and 3 days
Mathematics