Solve the equation.2x2 - 18x + 40 = 0
A. -4, -5
B. 2, 4, 5
C. 4, 5
D. 0, 4, 5
Answer: C
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Solve the problem. Round your answer, if appropriate.Boyle's law states that if the temperature of a gas remains constant, then PV = c, where 
, 
, and c is a constant. Given a quantity of gas at constant temperature, if V is decreasing at a rate of 10 in. 3/sec, at what rate is P increasing when P = 20 lb/in.2 and V = 70 in.3? (Do not round your answer.)
A. 
lb/in.2 per sec
B. 
lb/in.2 per sec
C. 140 lb/in.2 per sec
D. 35 lb/in.2 per sec
Solve the problem.In 1838, the German mathematician and astronomer Friedrich Wilhelm Bessel was the first person to calculate the distance to a star other than the Sun. He accomplished this by first determining the parallax of the star, 61 Cygni, at 0.314 arc seconds (Parallax is the change in position of the star measured against background stars as Earth orbits the Sun. See illustration.) If the distance from Earth to the Sun is about 150,000,000 km and ? = 0.314 seconds = 
minutes = 
degrees, determine the distance d from Earth to 61 Cygni using Bessel's figures. Express
the answer in scientific notation. 
A. 1.05 × 1014 km
B. 1.97 × 1014 km
C. 2.28 × 1013 km
D. 9.85 × 1013 km
Provide an appropriate response.Describe any similarities or differences in the two distributions represented by the following box plots. Assume that the two box plots have the same scale. 
What will be an ideal response?
x? = ?x + 2y, y? = 3x
Solve the first-order linear system.