Simplify the expression. All variables represent positive real numbers.
A. 
B. x14
C. x39
D. x21
Answer: B
Mathematics
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Provide an appropriate response.It can be shown that the inequalities -x ? x cos
? x hold for all values of x ? 0.Find 
x cos
if it exists.
A. 1 B. does not exist C. 0 D. 0.0007
Mathematics
Solve the problem. Use a Venn diagram, as needed.A survey of 280 families showed the following:107 had a dog;82 had a cat;37 had a dog and a cat;105 had neither a cat nor a dog nor a parakeet;9 had a cat and dog and a parakeet.How many had a parakeet only?
A. 38 B. 28 C. 23 D. 33
Mathematics
Graph the system of linear inequalities.2x + y ? 4 and y - 1 < 0
A. 
B. 
C. 
D. 
Mathematics
Solve.How many different three-number "combinations" are possible on a combination lock having 29 numbers on its dial?
A. 21,924 B. 21,112 C. 10,962 D. 42,224
Mathematics