Write the expression as a pure imaginary number.
A. 
i
B. -50i
C. ±50
D. 50i
Answer: D
Mathematics
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Simplify the expression.2x - 8x
A. -6x B. 6x C. 10x D. -6x2
Mathematics
The Norman window with dimensions as shown in the illustration is a rectangle topped by a semicircle. If the area of the window is 19.57 square feet, find its height h.
?
?
?
Please enter your answer as a number without the units. Round the answer to the nearest integer.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve for x.
? 5
A. 
? x ? 
B. x ? 
or x ? 
C. 
? x ? 
D. x ? 
or x ? 
Mathematics
Find an equation in slope-intercept form (where possible) for the line.Through (-1, 6), m = 2.5
A. y = 2.5x + 3.5 B. y = -2.5x + 3.5 C. y = 2.5x + 8.5 D. y = -2.5x + 8.5
Mathematics