Solve the problem.Find a so that the vectors v = i - aj and w = -5i - 3j are orthogonal.

A. - 
B.
C. - 
D.


Answer: B

Mathematics

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Find a sample space for an experiment of rolling a dice and picking a card suit.

A. {(0, ?), (1, ?), (2, ?), (3, ?), (4, ?), (5, ?),    (0, ?), (1, ?), (2, ?), (3, ?), (4, ?), (5, ?),   (0, ?), (1, ?), (2, ?), (3, ?), (4, ?), (5, ?),    (0, ?), (1, ?), (2, ?), (3, ?), (4, ?), (5, ?)} B. {(1, ?), (2, ?), (3, ?), (4, ?), (5, ?), (6, ?)   (1, ?), (2, ?), (3, ?), (4, ?), (5, ?), (6, ?)    (1, ?), (2, ?), (3, ?), (4, ?), (5, ?), (6, ?)    (1, ?), (2, ?), (3, ?), (4, ?), (5, ?), (6, ?)} C. {(1, ?), (2, ?), (3, ?), (4, ?), (1, ?), (2, ?), (3, ?), (4, ?), (1, ?), (2, ?), (3, ?), (4, ?), (1, ?), (2, ?), (3, ?), (4, ?)} D. {(1, ?), (2, ?), (3, ?), (4, ?)}

Mathematics

Solve the problems.In a surveyed area, 96.7% of the residents signed up for the local park district pool pass. Write this percent as a decimal.

A. 9.67 B. 96.7 C. 0.0967 D. 0.967

Mathematics

Place your graphing calculator in parametric and degree modes. Set the window for Tmin=0, Tmax=360, Tstep=1, Xmin= -1.8, Xmax=1.8, Xscl=1, Ymin= -1.2, Ymax=1.2, Yscl=1. Set the functions to X1T=cos T, Y1T=sin T. Graph the circle of radius 1 on the screen. Use the trace feature to move a short distance around the circle.For what angle T is sin T ? 0.174? (Assume 0° ? T ? 90°.)

A. 56.422° B. 0.174° C. 10° D. 80°

Mathematics

Perform the division.

A. - 2 + 
B. - 3  
C. + 3 +  
D. - 3 +  

Mathematics