Simplify. Assume that each variable is nonnegative.4
+ 
A. 7
B. 5
C. 12
D. 4
+ 
Answer: A
Mathematics
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Find parametric equations for the line described below.The line through the points P(-1, -1, 1) and Q(-3, 3, -5)
A. x = -2t - 1, y = 4t - 1, z = -6t + 1 B. x = -2t + 1, y = 4t + 1, z = -6t - 1 C. x = t + 2, y = t - 4, z = 1t + 6
Mathematics
Solve the equation.Solve cos ? = 1 for ?, where 0° ? ? ? 90°.
A. 30° B. 60° C. 90° D. 0°
Mathematics
Find the indicated sum. Use the formula for the sum of the first n terms of a geometric sequence.
A. 340 B. 248 C. 24 D. 120
Mathematics
Graph the inequality.-2x - 3y ? 6
A. 
B. 
C. 
D. 
Mathematics