If possible, solve the system of equations. Use any method. If there is not a unique solution to a system, say why.x + y = 4 x - y = -10

A. (-2, 10)
B. (-1, 9)
C. No solution; inconsistent system of equations
D. (1, 10)


Answer: B

Mathematics

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Determine the amplitude of the given function.y = sin 

A. 2?
B. 3
C. 1
D.

Mathematics

Solve the problem. Express the answer in scientific notation to two decimals.The earth is approximately 92,900,000 miles from the sun. If  what is the distance to the sun in meters?

A. 1.50 × 1010 m B. 1.50 × 1011 m C. 5.7 × 1010 m D. 5.7 × 10-10 m

Mathematics

?Find the x- and y-intercepts of the graph of the equation . ?

A. ?x-intercept: 

y-intercept: none


B. ?x-intercept: 

y-intercept: 


C. ?x-intercept:  

y-intercept: none


D. ?x-intercept: 

y-intercept: 


E. ??x-intercept: 

y-intercept: none


Mathematics

Solve the differential equation subject to the initial condition. + xy = 4x; y(0) = -6

A. y = -10ex2/2 + 4 B. y = -10e-x2/2 + 4 C. y = 4ex2/2 - 10 D. y = 4e-x2/2 - 10

Mathematics