Perform the indicated operation. Assume that all variables represent nonnegative real numbers.-5k
+ 5
A. -280k
B. -10
C. -20k
+ 10
D. -10k
Answer: D
Mathematics
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Determine whether the quantity is a variable or a constant.The number of hotdogs sold during the baseball game
A. variable B. constant
Mathematics
Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(9 + 9i)(3 - 4i)
A. 63 - 9i B. -36i2 - 9i + 27 C. -9 + 63i D. 63 + 9i
Mathematics
Simplify the expression.16 + (-3)(-29) + (-22)
A. 26 B. 81 C. 133 D. 529
Mathematics
Solve the system of equations by the substitution method.
A. (- 
, 
)
B. (
, - 
)
C. infinite number of solutions
D. no solution
Mathematics