Evaluate the expression.[4 + (-4)] + (-5 + 8)
A. 13
B. -13
C. 3
D. 21
Answer: C
Mathematics
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Find parametric equations for the line described below.The line through the point P(3, -1, -3) and perpendicular to the plane 
A. x = -7t + 3, y = -2t - 1, z = -3 B. x = -2t - 3, y = 7t + 1, z = 5t + 3 C. x = -2t + 3, y = 7t - 1, z = 5t - 3 D. x = 2t - 3, y = -7t + 1, z = -5t + 3
Mathematics
Write using exponential notation. 7 ? 9 ? 9 ? 9 ? 9 ? 9
A. 17 ? 59 B. 7 ? 95 C. 635 D. (7 ? 9)5
Mathematics
Follow the order of operations to work the problem.11 + (-14) - 10 + (-5)
A. 2 B. -8 C. -18 D. 30
Mathematics
Use a formula to solve the problem.Find the area of a triangle with height 17 m and base 19 m.
A. 646 m2 B. 18 m2 C. 161.5 m2 D. 323 m2
Mathematics