Solve the problem.How much pure acid should be mixed with 7 gallons of a 50% acid solution in order to get an 80% acid solution?
A. 10.5 gal
B. 17.5 gal
C. 28 gal
D. 3.5 gal
Answer: A
Mathematics
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B. ln 5
C. - ln 5
D. ln 4
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A. 2
B. 22
C. 2
D. 244
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Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form.(1 + i)20
A. 1024i B. 1024 C. -1024 D. -1024i
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The graphing calculator screens show a system and the point of intersection. Choose the screen which best represents the given system.y = 2x + 34x + 3y = -6
A.
B.
C.
D.
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