Solve.x2/3 - 7x1/3 + 10 = 0
A. 2, 5
B. 8, 125
C. -125, -8
D. -5, -2
Answer: B
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Solve the problem.A tank initially contains 120 gal of brine in which 60 lb of salt are dissolved. A brine containing 3 lb/gal of salt runs into the tank at the rate of 9 gal/min. The mixture is kept uniform by stirring and flows out of the tank at the rate of 7 gal/min. Write, in standard form, the differential equation that models the mixing process.
A. 
+ 
y = 27
B. 
= 27 - 
y
C. 
+ 
y = 21
D. 
+ 
y = 27
Use Cramer's rule to solve the linear system. If D = 0, use another method to determine the solution set. 7x + 3y - z = 30 x + 6y + 7z = 52-6x + y + z = -4
A. {(2, -6, -2)} B. {(6, 2, 6)} C. {(2, 6, 2)} D. {(3, 4, 2)}
Solve the system by using the inverse of the coefficient matrix. 2x - y - 5z = -3 3x + 5y + 8z = 24 8x - 8y + z = 1
A. {(2, 2, 1)} B. {(-2, 2, 4)} C. {(2, 1, 2)} D. ?
Write an equation in slope-intercept form of the line satisfying the given conditions.Perpendicular to the line y = -4x + 2; containing the point (1, 2).
A. y = - 
x + 
B. y = -4x + 
C. y = 4x + 
D. y = 
x + 