Solve the equation.16x - 5 - 12x = 31

A. {7}
B. {10}
C. {12}
D. {9}


Answer: D

Mathematics

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Identify which of these types of sampling is used: simple random, stratified, systematic, or convenience.49 students are selected at random from the Sophomore class, 39 from the Junior class, and 48 from the Senior classes.

A. Systematic B. Stratified C. Simple random D. Convenience

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Use a strictly graphical approach to solve the equation over the interval [0, 2?). Express solutions to the nearest hundredth.-cot x + 2 csc x = 3

A.  {1.01, 2.78, 3.14} B.  {0.94, 4.51} C.  {1.01, 2.78} D.  {1.06}

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Determine whether or not the given equation is linear.6u + 5v = 7uv

A. No B. Yes

Mathematics