Consider the list of n n-vectors:
1 1 1
0 1 1
a1= [ 0 ], a2= [ 0 ] ,, an= [ 1 ]
. . .
. . .
. . .
0 0 1

(The vector ai has its first i entries equal to one, and the remaining entries zero.)
Describe what happens when you run the Gram–Schmidt algorithm on this list of vectors, i. e., say what q1,..., qn are. Is a1,..., an a basis?

Identify the number as a rational or irrational. explain. 127

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?