Pre 1 questão: (EFORMAB)
Num campeonato de futebol os times
ganham 3 pontos em cada vitória, 1 ponto por
empate e zero ponto por derrota. O time Falco
participou de 50 jogos e fez 54 pontos, tendo
perdido 12 jogos
Chamando de (vo número de jogos que
48
Falcão venceu, (d) o número de jogos em que foi
derrotado e (e) os jogos em que houve empate.
Assinale a alternativa que mostra corretamente o
sistema de equação que representa essa situação​

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

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.

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?