Determine the row operation that was used on the first matrix to obtain the second matrix.
, 
What will be an ideal response?
R1 + R2 ? R2
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?Which of the following is not true about combinations?
A. ?"n objects taken r at a time". B. ?Order matters. C. ?Order does not matter. D. ?The number of five card hands in a standard deck of cards uses combinations. E. ?The number of ways you can arrange select4 people, out of a pool of 20 people, to serve on a committee uses combination.
Determine whether the given relationship defines a function. If so, identify the independent and dependent variable, and why the relationship is a function.The temperature t on a backyard thermometer at 5 pm on a given day x.
A. No B. Yes; x, t; there is one temperature t on any given day x at 5 pm.
If a certain type of fabric comes in a bolt 4 feet wide, how long a piece must be purchased to have 48 square feet? ?
A. 12 ft B. 20 ft C. 44 ft D. 8 ft E. 576 ft
Solve the inequality analytically, writing the solution set in interval notation.-6(3x + 4) < -24x - 48
A. (-?, -4) B. (-24, ?) C. (-?, -24) D. (-4, ?)