What is the answer to both and how am i suposed to do it

First you could switch the order of the numbers were the two fractions are that would  now be 1/4 + 4/3(-12)
when you add 1/4 + 4/3 you would get 1 7/12. then you would do 1 7/12 x -12. Multiplying is easy just go straight across. but since its whole and mixed number you would put a one under the -12.

1 7/12 x -12 is -19

The length of the hypotenuse is 12 inches.

Step-by-step explanation:

In this case we need to use the Pythagorean Theorem. This is:

Where "a" is the hypotenuse and "b" and "c" are the legs of the right triangle.

We can say that:

Then, substituting values into and solving for "a", we get that the lenght of the hypotenuse is the following: