Perform the specified calculation.For the vector u = 
, calculate |2u|.
A. 2
B. -2
C. 
D. 2
Answer: D
Mathematics
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Solve the problem.The intelligence quotient in psychology is given by Q = 100
, where m is an individual's mental age and c is the individual's chronological, or actual, age. Find 
.
A. - 
B. - 
C. 100m
D. 
Mathematics
Use an Euler diagram to determine whether the argument is valid or invalid.All cats like fish.Henry does not like fish Therefore, Henry is not a cat.
A. valid B. invalid
Mathematics
Write the vector v in the form v1i + v2j, given 
and the angle ? that v makes with the positive x-axis.
= 11, ? = 150°
A. 
i + 
j
B. 
i - 
j
C. - 
i + 
j
D. 11i + 
j
Mathematics
Find the center-radius form of the equation of the circle.center (10, 0), radius 3
A. (x + 10)2 + y2 = 9 B. x2 + (y - 10)2 = 3 C. (x - 10)2 + y2 = 9 D. x2 + (y + 10)2 = 3
Mathematics