Evaluate x+y when x=-20.3 and y=1.4

-18.9

Step-by-step explanation:

To answer this question, insert our known values into the equation.

Now our equation is -20.3+1.4.

Its a simple matter of adding from here:

-20.3+1.4=-18.9

Hope this helps!

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

answer:

a=9

step-by-step explanation: lmk if you need a explanation