Solve for the unknown variable.V = 
bh; V = 40, h = 8
A. b = 15
B. b = 48
C. b = 320
D. b = 5
Answer: A
Mathematics
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Add or subtract as indicated. Simplify the result, if possible.
+ 
A. 
B. 0
C. - 
D. 
Mathematics
Solve using the substitution method. Use a graphing calculator to check your answer. 8x + 5y = 58x + 5y = 13
A. (1, 1) B. (8, 5) C. No solution D. Infinitely many solutions
Mathematics
Solve the problem.The formula D = 7e-0.04h can be used to find the number of milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. When the number of milligrams reaches 2, the drug is to be given again. What is the time between injections?
A. 17.33 hr B. 31.32 hr C. 48.65 hr D. 34.43 hr
Mathematics
Find all square roots of the number.1225
A. -35, 35 B. -37, 37 C. -70, 70 D. -36, 36
Mathematics