Write a matrix to represent the system. 2a-3b=6 a+b=12

Step-by-step explanation:

The given system of equations is

2a-3b=6

a+b=12

In the first column of the matrix, we write the coefficient of a.

In the second column of the matrix, we write the coefficient of b.

In the third column of the matrix, we write the constant terms.

Coefficients of a are 2 and 1 which is in the first column.

Coefficients of b are -3 and 1 which is in the second column.

And constants are 6 and 12 which will be in third column

Thus, the Augmented matrix is given by

idk

step-by-step explanation:

i don't know

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!