Crystal is selling tickets for her school fair. On the first day, she sold 3 senior citizen tickets and 1 child ticket for a total of $38. On the second day, she got $52 by selling 3 senior citizen tickets. Find the price of a senior citizen ticket and the price of a child ticket.

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

answer: i literally just answered this question but they want me to do it again

step-by-step explanation:

loloo

step-by-step explanation:

lololool

the answer is  

a.

4,624π mm2

step-by-step explanation: