Solve the system using the matrix inverse method. 3x + 5y = -102x + 4y = -6

A. {(5, -1)}
B. {(-5, 1)}
C. {(-1, 5)}
D. {(1, -5)}


Answer: B

Mathematics

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Write the number in scientific notation. ?

A.


B.

73,300


C.


D.


E.


Mathematics

Add the polynomials. Express your answer in standard form.(8 - 9y2) + (3y2 - 4 - 3y)

A. -6y2 - 3y + 12 B. -12y2 - 3y + 4 C. -6y2 - 3y + 4 D. -6y2 + 3y + 4

Mathematics

Use a graphing calculator to solve the system of equations. Round your solutions to one decimal place.1.0x + 1.0y + 0.8z = 0.84.1x - 7.0y + 0.7z = -5.03.2x - 4.0y - 2.4z = -4.3

A. (-0.4, 1.3, 0.9) B. (-0.8, 2.6, 1.8) C. (-1.6, 5.1, 3.6) D. (-0.2, 0.6, 0.5)

Mathematics

The equation is in the form y = mx + b. Identify m and b.y = x - 

A. m = ; b = 
B. m = ; b = 
C. m = - ; b = 
D. m = ; b = - 

Mathematics