Draw a vector representing the following velocity.
?
50 mph due west
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: A
Mathematics
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Solve.
= 
A. -8, 8 B. 8 C. 64 D. -4, 4
Mathematics
Divide the expression. You may want to use the property 
= 
+ 
. Do not use a calculator.- 
A. - 
x1.6
B. - 
x5
C. -24x3
D. -4x13
Mathematics
Graph the following equation.
?
?
A. ?
B. ?
C. ?
Mathematics
Find the expected value, the variance, and the standard deviation, when they exist, for the probability density function. Give an exact answer for the expected value and round the variance and standard deviation to four decimal places when appropriate.f(x) = 
A. 
; does not exist; does not exist
B. 
; 2.2168; does not exist
C. 
; 1.4889; does not exist
D. 
; 2.2168; 1.4889
Mathematics