Complete the magic (addition) square. A magic square has the property that the sum of the numbers in any row, column, or diagonal is the same.Use each number 19, 20, 21, 22, 23, 24, 25, 26, and 27 once.
A. 
B. 
C. 
D. 
Answer: B
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Perform the operation in expanded notation. Write your answer in simplified form.172 + 145
A. 327 B. 317 C. 1693 D. 337
Solve the problem.A lens can be described as the volume generated by rotating the first quadrant area under the curve 
about the y-axis (measurements in cm). Find its centroid.
A. 0.833 cm above the center of the base B. 1.25 cm above the center of the base C. 1.67 cm above the center of the base D. 3.33 cm above the center of the base
Find the tax refund or tax due for the following people. The letter following the name indicates the marital status. Assume a 52-week year and that all married people are filing jointly. Use $4050 for each personal deduction, a standard deduction of $6300 for single taxpayers, $12,600 for married taxpayers filing jointly, and $9300 for head of household and the tax rate schedule.
A. $402.35 refund B. $5,590.35 refund C. $5,590.35 due D. $402.35 due
The quantity demanded each month of the Sicard wristwatch is related to the unit price by the equation 
, where
src="https://sciemce.com/media/3/ppg__cognero__4.4_Optimization_I__media__7424c072-8252-4b27-94ba-8487358d8e95.PNG" style="vertical-align: middle;" /> is measured in dollars and 
is measured in units of a thousand.
?
To yield a maximum revenue, how many watches must be sold?
?
__________
Fill in the blank(s) with the appropriate word(s).