If c is the hypotenuse and b is the leg, then the third side (a):

If b and с are legs, then hypotenuse (a):
A "system" of equations is a set or collection of equations that you deal with all together at once. Linear equations (ones that graph as straight lines) are simpler than non-linear equations, and the simplest linear system is one with two equations and two variables.
Answer:
x=45degrees because there is 180 degrees on the straight lne and the first one is 90 degeeese and since it is split in half 90/2 is 45
Step-by-step explanation: