Solve the problem.One fifth of Joan's earned income is deducted for withholdings. Three tenths of the withholdings are for federal income tax. What fraction of Joan's earned income is deducted for federal income tax?
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Write the first four elements of the sequence. 
n
A. 1, 
, 
, 
B. 
, 
, 
, 
C. 
, 
, 
, 
D. 
, - 
, 
, - 
Mathematics
Use a truth table to determine whether the argument is valid.p ? ~q
p ? q
A. Valid B. Invalid
Mathematics
Find the length of the third side of the right triangle. Assume that c represents the length of the hypotenuse. Give an exact answer and, if appropriate, an approximation to three decimal places.b = 20, c = 25
A. a = 5 B. a = 225 C. a = 45 D. a = 15
Mathematics
Find the dimensions of a rectangle of area 400
that has the smallest possible perimeter.
a. 4 ft by 100 ft b. 1 ft by 400 ft c. 2 ft by 200 ft d. 20 ft by 20 ft
Mathematics