Im sorry im literally gonna need help with all of the questions xD

Answer is an=a1+(n-1)d

Step-by-step explanation:

I hope it's helpful!

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

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !