Factor completely, if possible.20x4 + 31x2 + 12
A. (4x2 + 1)(5x2 + 12)
B. (20x2 + 3)(x2 + 4)
C. (5x2 - 4)(4x2 - 3)
D. (4x2 + 3)(5x2 + 4)
Answer: D
Mathematics
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Provide an appropriate response.The total price of some lumber was $450. This price includes the sales tax of 5%. How much was the lumber?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Simplify.
+ 
- 
A. 
B. - 
C. 
D. - 
Mathematics
Find the center and radius of the circle whose graph is shown. Write the standard form of the equation of the circle.
A. r = 
; (h, k) = (3, -1); (x + 3)2 + (y - 1)2 = 3
B. r = 3; (h, k) = (3, -1); (x - 3)2 + (y + 1)2 = 9
C. r = 
; (h, k) = (3, -1); (x - 3)2 + (y + 1)2 = 3
D. r = 3; (h, k) = (3, -1); (x + 3)2 + (y - 1)2 = 9
Mathematics
Solve the inequality.x2 - 25 ? 0
A. (-?, -5] or [5, ?) B. [-25, 25] C. [-5, 5] D. (-?, -25] or [25, ?)
Mathematics