Lisa created the table below to show how different students get to school. How Students Get to School Bus Bike Total 7th Grade 79 128 8th Grade 83 112 Total 162 According to the table, how many students in the seventh grade bike to school? 29 49 78 83

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.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Anyone know these questions? i need ,.