Factor the four-term polynomial by grouping.3xy - 9x + 7y - 21
A. (3x - 3)(y + 7)
B. (3x + y)(7y - 3)
C. (3x + 7)(y - 3)
D. (3x + 7y)(y - 3)
Answer: C
Mathematics
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Decide if the statement is true or false.cos ? increases in value as ? goes from 0° to 90°.
A. True B. False
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Estimate by rounding.
A. 305 B. 310 C. 240 D. 265
Mathematics
Find all solutions to the equation. Express each result in radians.cot x sec x = 2 cot x
A. 
+ n?, 
+ n?, 0 + n?
B. 
+ 2n?, 
+ 2n?, 0 + n?
C. 
+ 2n?, 
+ 2n?, 0 + n?
D. 
+ n?, x = 
+ n?, 0 + n?
Mathematics
For the differential equation: 
(a) Find the equilibrium value(s). (b) Access the stability of each equilibrium value. (c) Determine the point(s) of inflection; and (d) Sketch sample solutions of the differential equation.
Mathematics