How many roots does 2x^2-7x-5=0 have?

a) 1 real
b) 2 real rationals
c) 2 real irrationals
d) no solution

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

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?

Write the fraction or mixed number and the decimal shown by the model