Find the unknown in each percent question.What is 10% of 500?
A. 0.5
B. 5
C. 500
D. 50
Answer: D
Mathematics
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Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°
A. 
B. 
C. 
D. 
Mathematics
Factor the expression completely. If the polynomial is prime, state this as your answer.49x2 - 14x + 1
A. (7x - 1)2 B. (7x + 1)(7x - 1) C. prime D. (x - 7)2
Mathematics
Let S be a set with 6 elements. Determine the number of unordered partitions of S of type: (2, 2, 2).
Fill in the blank(s) with the appropriate word(s).
Mathematics
Perform the indicated computation. Write the answer in scientific notation.
A. 4.6 × 10-7 B. 2.3 × 10-7 C. 2.3 × 109 D. 4.6 × 109
Mathematics