Evaluate a + 3b if possible. asap!

Not possible.

Step-by-step explanation:

Addition of Matrix A and Matrix B is possible only if the order of matrix A is same as the order of matrix B.

Order of a matrix with rows and columns is .

Here, matrix A is

Matrix B is .

Multiplying a matrix by a constant doesn't change its order.

So, order of matrix A is as it has 3 rows and 2 columns.

The order of matrix 3B is as it has 2 rows and 3 columns.

Therefore, addition is not possible as the order is different.

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2