Write the complex number in standard form.
?

?
A. i
B. -i
C. i
D. i
E. -i
Answer: C
Mathematics
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Estimate the value of the quantity.Joe wants to find out how far it is across the lake. His boat has a speedometer but no odometer. The table shows the boats velocity at 10 second intervals. Estimate the distance across the lake using right-end point values.
A. 3470 ft B. 3370 ft C. 337 ft D. 5000 ft
Mathematics
Find the vertex.f(x) = 2x2 - 12x + 19
A. (-1, -3) B. (3, 1) C. (1, 3) D. (-3, -1)
Mathematics
Answer the question about the given function.Given the function f(x) = -3x2 + 6x - 1, is the point (1, 2) on the graph of f?
A. Yes B. No
Mathematics
Find the requested value of the variable.x varies inversely as y2. If x = 5 when y = 24, find x when y = 4.
A. x = 6 B. x = 150 C. x = 180 D. x = 80
Mathematics