Provide an appropriate response.When writing an equation, unknown quantities are represented by:
A. letters
B. numbers
C. symbols
D. parentheses
Answer: A
Mathematics
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Find the work done by F over the curve in the direction of increasing t.F = 4yi + 
j + (6x + 4z)k; C: r(t) = ti + t2j + tk, 0 ? t ? 2
A. W = 
+ 
B. W = 42 + 20
C. W = 
+ 20
D. W = 0
Mathematics
Simplify.
A. 64
B. 8
C. 
D. 
Mathematics
Perform the indicated operation and write the answer in the form 
where a and b are real numbers.9i + (-3 - i)
A. -3 + 10i B. 3 - 8i C. -3 + 8i D. 3 - 10i
Mathematics
Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.sec 
A. 1.10 B. 1.00 C. 1.11 D. 1.01
Mathematics