Perform the indicated operation. Simplify if possible.- 
- 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the problem.Which of the following vectors is orthogonal to 20i - 8j?
A. -10i - 25j B. 4i + 3j C. 15i - 6j D. 20i + 4j
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Make a bar graph using the given frequencies.The frequency distribution indicates the height in feet of persons in a group of 270 people. 
A. 
B. 
C. 
D. 
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Provide an appropriate response.The average of a group of negative numbers is a 
number.
Fill in the blank(s) with the appropriate word(s).
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Find the unknown value.63 is 60% of what number?
A. 37.8 B. 105 C. 1050 D. 10.5
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