Solve the problem.Cindy wants to secure sequins on a piece of felt shaped like a trapezoid with a height of 9 cm and bases of 14 cm and 8 cm. What is the cost of all the sequins if sequins cost $0.70 per cm2 of coverage?
A. $69.30
B. $64.40
C. $28.00
D. $21.70
Answer: A
Mathematics
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Factor out the greatest common factor.-16x3 - 32x2 + 24x
A. -8x(2x2 - 4x + 3) B. -16x(x2 + 2x - 3) C. -8(2x3 + 4x2 - 3x) D. -8x(2x2 + 4x - 3)
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Solve the problem.An auditorium has 15 rows with 10 seats in the first row, 12 in the second row, 14 in the third row, and so forth. How many seats are in the auditorium?
A. 360 B. 390 C. 255 D. 300
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Find the focus and directrix of the parabola with the given equation.y2 = 36x
A. Focus: (0, -9), directrix: y = 9 B. Focus: (0, 9), directrix: y = -9 C. Focus: (9, 0), directrix: x = -9 D. Focus: (-9, 0), directrix: x = 9
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Solve by completing the square.3x2 - 2x - 4 = 0
A. x = -4, x = 
B. x = 
C. x = 
D. x = 
Mathematics