Find the LCM. 8xy , 12x2
A. 24xy3
B. 24x2y
C. 24xy2
D. 24x3y
Answer: B
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Write the sentence as an equation. Let the variable x represent the number.The sum of twice a number and 8 is 14.
A. 2x - 8 = 14 B. x + 16 = 14 C. 16x = 14 D. 2x + 8 = 14
Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(-1, 0)} B. no solution; ? C. {(-1, 1)} D. {(-2, 1)}
Use the distributive property to multiply. Then, if possible, simplify the resulting expression.3(7 + m)
A. 21m B. 21 + m C. 21 + 7m D. 21 + 3m
Parametric equations and a parameter interval for the motion of a particle in the xy-plane are given. Identify the particle's path by finding a Cartesian equation for it. Graph the Cartesian equation. Indicate the portion of the graph traced by the particle and the direction of motion.x = 49t2, y = 7t, -? ? t ? ?
A. y = x2
Entire parabola, right to left (from first quadrant to origin to second quadrant)
B. x = y2
Entire parabola, top to bottom (from first quadrant to origin to fourth quadrant)
C. y = x2
Entire parabola, left to right (from second quadrant to origin to first quadrant)
D. x = y2
Entire parabola, bottom to top (from fourth quadrant to origin to first quadrant)