The first group consisted of 5 students and the second group consisted of 3 students. If the mean time of the first group was 16.65 seconds and the overall mean time for both groups of students was 13.26 seconds, determine the mean time for the second group of students.

According to the 2008 u. s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no