Compute the range for the set of data.6, 8, 8, 3, 7, 12, 8, 9, 6

A. 12
B. 7.4
C. 9
D. 15


Answer: C

Mathematics

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Solve the problem by integration.Under specified conditions, the time t (in min) required to form x grams of a substance during a chemical reaction is given by   Find the equation relating t and x if x = 0 g when 

A. t =  ln  -  ln 
B. t =  ln  +  ln 
C. t =  ln  +  ln 
D. t =  ln  -  ln 

Mathematics

Solve the problem.Use the formula P = Iekt. A bacterial culture has an initial population of 10,000. If its population declines to 7000 in  what will it be at the end of 

A. 3108 B. 6215 C. 1500 D. 7366

Mathematics

Solve the exponential equation and approximate the result, correct to three decimal places.7 ? 2x - 7 = 20

A. 3.301 B. 1.948 C. 0.893 D. 1.249

Mathematics

Solve the problem.pH = -log10[H+] Find the [H+] if the pH = 6.4.

A. 3.98 × 10-6 B. 2.51 × 10-6 C. 3.98 × 10-7 D. 2.51 × 10-7

Mathematics