Solve for the unknown in the equation.4A = 16
A. A = 12
B. A = 3
C. A = 4
D. A = 11
Answer: C
Mathematics
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Find the value of the trigonometric function.sec (-255.37°)
A. 1.034 B. -1.034 C. 3.959 D. -3.959
Mathematics
Factor.64y2 - 9
A. (64y - 9)(y + 1) B. (8y - 3)2 C. (8y + 3)2 D. (8y - 3)(8y + 3)
Mathematics
A solution has a hydroxyl ion concentration of 8.33 × 10-14. Find the hydrogen ion concentration in this solution.
A. 1.2 × 10 [H+] B. 0.012 mol/L [H+] C. 1.2 × 10-1 mol/L [H+] D. 1.2 mol/L [H+]
Mathematics
Solve the problem.The space in a landfill decreases with time as given by the function 
where t is measured in years. How much space is left when t = 6?
A. 110 B. 320 C. 180 D. 200
Mathematics