Simplify each expression. Justify each step that has not been justified. 9. 5+ (3x + 2) = 5+ (2 + 3x) Commutative Property of Addition = (5 + 2) + 3x = 7+ 3x Combine like terms. 10.3.( x6)=3. (6.) = (3-6).x Associative Property of Multiplication = 18x Multiply.

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: 819.89 miles across america

step-by-step explanation:

step-by-step explanation: