3. in problems 3-6 find the general solution of each differential equation 2y'' + 2y' + 3y = 0 ans: ans: 4. 5. 2y" +9y" +12y + 5y = 0 y" - 2y' + y = x'e' ans:

Cherie measures and records the lengths and sizes of the same style of a sandal found at a shoe store. which equation can be used to determine the approximate shoe size, s, for a foot length of x inches? s = x – 2 s = 2x – 10 s = x + 6 s = 2x + 4

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?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?