***top says band and play instrument and not in band and play instrument a survey asked 50 students if they play an instrument and if they are in band. 1. 25 students play an instrument 2. 20 students are in band 3. 30 students are not in band which table shows these data correctly entered in a two-way frequency

Answer B shows the correct information. If you look at the totals of the tables, B shows that 30 aren't in a band, 20 are in a band, and 25 play an instrument.

Option B.

Step-by-step explanation:

Given that a survey asked 50 students if they play an instrument and if they are in band.  

1. 25 students play an instrument  

2. 20 students are in band  

3. 30 students are not in band

This gives that Option B has the correct table.

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