Write the expression: 12 more than the sum of half a number and 3 is 45

answer=15

Step-by-step explanation:

12 + ( 1/2x + 3) = 45

subtract 12 from each side

(1/2x + 3 = 33

subtract 3 from each side

1/2x = 30

x=15

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: the answer is simply nothing.

step-by-step explanation: because there is no ending to this question

gimme brainliest > : 3