Find the focus and the directrix of the parabola.-2y2 - 4y + 3 - x = 0
A. Focus: (-9, 5); directrix: x = -11
B. Focus: 
; directrix: x = 
C. Focus: 
; directrix: y = 
D. Focus: 
; directrix: x = 
Answer: D
Mathematics
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Write an expression involving subtraction and simplify.the difference of -28 and -2.
A. 30 B. -30 C. -26 D. 26
Mathematics
Factor by any method.30x2 + 36xy + 25xy + 30y2
A. (30x + 5y)(x + 6y) B. (6x + 5)(5x + 6) C. (6x - 5y)(5x + 6y) D. (6x + 5y)(5x + 6y)
Mathematics
Find the opposite of the integer.-1
A. 0 B. 1 C. -1 D. does not exist
Mathematics
Use Pascal's triangle to expand the binomial.(x - 2y)6
A. x6 - 12x5y - 64x4y2 - 40x3y3 - 64x2y4 - 12xy5 - 2y6 B. x6 - 12x5y + 24x4y2 - 36x3y3 + 24x2y4 - 12x y5 + 2y6 C. x6 - 12x5y - 48x4y2 - 144x3y3 - 192x2y4 - 192xy5 - 64y6 D. x6 - 12x5y + 60x4y2 - 160x3y3 + 240x2y4 - 192xy5 + 64y6
Mathematics