Write the expression as one term. Evaluate if possible.log 20x2 - log 2x2

A. log 10
B. 1
C. log 1
D. log 18


Answer: B

Mathematics

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Solve the problem.Consider the pair of differential equations that model a predator-prey system with populations x and y. x'(t) = -2x + 6xy y'(t) = y - 9xy(a) Find the lines along which x'(t) = 0,(b) find the lines along which y'(t) = 0, (c) find the equilibrium points for the system.

A. (a) x' = 0 along the lines x = 0 and y = 
(b) y' = 0 along the lines y = 0 and x = 
(c) (0, 0) and 
B. (a) x' = 0 along the lines x = 0 and y = 3
(b) y' = 0 along the lines y = 0 and x = 9
(c) (0, 0) and 
C. (a) x' = 0 along the lines x =  and y = 0
(b) y' = 0 along the lines y =  and x = 0
(c) (0, 0) and 
D. (a) x' = 0 along the lines x = 0 and y = 3
(b) y' = 0 along the lines y = 0 and x = 9
(c)  and 

Mathematics

Solve the system using the matrix method.  If  (x, y, z)  is the solution to the system, give the value of  . ? ?

A. 59 B. 236 C. 353 D. 77 E. -76

Mathematics

Find the indicated limit if it exists.

A. -4 B. Does not exist C. 4 D. 0

Mathematics

Express the fraction or mixed number as a percent.

A. 2%
B. 45%
C. 22%
D. 4%

Mathematics