Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.
4
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the equation by first clearing the decimals.0.5x - 0.3(20 + x) = 0.1(20)
A. {40} B. {30} C. {20} D. {50}
Mathematics
Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Mathematics
Determine whether the equation is linear or nonlinear.
+ 1 = 11
A. linear B. nonlinear
Mathematics
Solve the problem.The logistic growth function f(t) = 
models the number of people who have become ill with a particular infection t weeks after its initial outbreak in a particular community. How many people became ill with this infection when the epidemic began?
A. 1939 people B. 1940 people C. 97,000 people D. 50 people
Mathematics