Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.

A. Yes; yes
B. Yes; no
C. No


Answer: C

Mathematics

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Find the equation of the ellipse satisfying the given conditions. The center is at the origin.Sum of lengths of major and minor axes 16, focus (0, 4)

A.  +  = 1
B.  +  = 1
C.  +  = 1
D.  +  = 1

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Find a rational number and an irrational number between the given pair of numbers. ? ?4.5 and 4.6 ?

A.
B. ?
C. ?
D. ?
E. ?

Mathematics

Let . Find the value of the function. ? ??

A.
B.
C.
D.
E.

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List the like terms of the expression.-10xy + 5xy2 - 3x2y - 7xy2 + xy

A. -10xy and xy are like terms 5xy2, - 3x2y, and - 7xy2 are like terms B. -10xy and xy are like terms 5xy2 and - 7xy2 are like terms C. 5xy2 and - 7xy2 are like terms D. -10xy and xy are like terms

Mathematics