Comprei 15 rolos para uma instalação elétrica gastei 3/8 de 1 rolo quantos trabalhos eu posso realizar com o material comprado?

Find the roots of the equation below. x^2 - 6 + 9 = 0

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Triangle knm is what is true about the sides of knm