Answer=9
To solve this, we just have to find a number that, when added to -4, make a total of 5, and when multiplied by -4 make a total of -36.
x+-4=5
x*-4=-36
9 fits the parameters for both of these
9+-4=9
9-4=5
5=5
9*-4=36
36=36
Use Mathpapa or symbolab, they are both very useful resources, and have saved me many times
Answer: Substitution Property
Think of "substitute" as in replacement. For example, your substitute teacher is a (<span>temporary) </span>replacement for your current teacher. In this case, we're replacing "m4" with "20 degrees".
Simplified it is 13x-13y+10
(mark brainliest if correct pls)
