An augmented matrix that represents a system of linear equations (in variables x, y, z and w if applicable) has been reduced using Gauss-Jordan elimination. Find the solution represented by the augmented matrix.
?
?
A. ?(-3, 9, 3)
B. (3, -9, 3)
C. (-3, -9, 3)
D. (-3, -9, -3)
E. (-3, 3, -9)
Answer: C
Mathematics
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Find all the roots of the function. Use preliminary analysis and graphing to determine good initial approximations. Round to six decimal places.f(x) = ex + 
A. x ? -1.463056 B. x ? -1.462945 C. x ? -1.963056 D. x ? -0.463056
Mathematics
Simplify using the product rule of exponents.(-0.2x6)(0.4x7)
A. 0.08x42 B. -0.08x42 C. -0.08x13 D. 0.08x13
Mathematics
Simplify the expression. Write your answer without negative exponents. Whenever an exponent is negative or zero, assume that the base is not zero.
2
A. 
B. 
C. 
D. 
Mathematics
Find the derivative of the function.
?
?
A. ?
B. ?
C. ?
D. ?
E. none of these
Mathematics