Ms. Benton gives her students a reading list with 12 books. She requires them to read 2 books from the list during the grading period. In how many
different ways can 2 books be chosen?

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

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

answerim :

n

step-by-step explanation:

im not sure but my dad knows

a: inscribed angles

step-by-step explanation:

i reviewed this question with a peer and teacher, seems to be correct, me later