Carl ordered a refrigerator that weights 192 pounds. It was shipped to him inside a box and surrounded by packing material. The total weight of the refrigerator, box, and packing material was 205 pounds. What is the weight of the box and packing material. What is the answer.

13 pounds

Step-by-step explanation:

We have that the weight of only the refrigerator is 192 pounds, now if we add the weight of the box and the packing material is 205 pounds.

To calculate the weight of the box and the packingpackaging material would be the difference between both weights, that is:

205 - 192 = 13

Which means that the weight of the box and packing material is 13 pounds.

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1