Find the magnitude or direction angle of the given vector as indicated.u = 5[(cos 30°)i + (sin 30°)j]; Find the direction angle ?.
A. 30°
B. 120°
C. 60°
D. 45°
Answer: A
Mathematics
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Determine whether the indicated ordered pair lies on the graph of the given equation.y = 8x2 + 1, (-1, -7)
A. Yes B. No
Mathematics
Use inequality symbols to rewrite the statement. Let x represent the unknown.The new software product will cost between $210 and $455 per unit.
A. x ? 455 B. x > $210, x < $455 C. $210 < x < $455 D. $210 ? x ? $455
Mathematics
Find an equation of variation in which the following are true.x varies inversely as y2, and x = 10 when y = 14.
A. x = 
B. x = 1960y2
C. x = 
D. x = 
Mathematics
Identify the base and the exponent for the exponential expression.-(-12)13
A. Base is 13; exponent is -12. B. Base is -12; exponent is 13. C. Base is 13; exponent is 12. D. Base is 12; exponent is 13.
Mathematics