Dentify which of these types of sampling is used: random, systematic, stratified, cluster, or convenience. a. Students in a larger lecture course are divided into freshmen, sophomores, juniors, and seniors. 20 students are randomly selected from each group. b. Students in a large lecture course are numbered. A sample is formed by selecting every 10th number in the list. c. Students in larger lectures are enrolled in 15 lab sections. 3 sections are randomly selected, and then select all the students from those three sections.

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

this is answer of 144 cubic meters

false

step-by-step explanation:

rulers and compasses arent required in order to bisect an angle because when bisecting angles, you're making a "half circle" and considering in order to bisect an angle it wouldn't be straight, you wouldn't need either of the two

she will travel a distance in the range of 3 - 11 miles