Write the vector v in the form ai + bj, given its magnitude 
and the angle ? it makes with the positive x-axis.
= 8, ? = 90°
A. v = 8i
B. v = 8i + 8j
C. v = 8j
D. v = 8i - 8j
Answer: C
Mathematics
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Expand the quotient by partial fractions.
A. 
+ 
+ 
B. 
+ 
+ 
C. 
+ 
D. 
+ 
+ 
Mathematics
Add or subtract. Assume all variables represent positive real numbers.
+ 
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation.
+ 
A. 
B. 
C. 
D. 0
Mathematics
Tell if the square root is rational, irrational, or not a real number. If the square root is rational, find the exact value; if the square root is irrational, write the approximate value rounded to two decimal places.
A. irrational; 
B. rational; 
C. rational; 
D. not a real number
Mathematics