X*a = 244 is equation (1)

x+a = 2 is equation (2)

Solve equation (2) for 'a' to get

x+a = 2

a = 2-x

Call this equation (3)

We will plug equation (3) into equation (1)

x*a = 244

x*(a) = 244

x*(2-x) = 244

Notice how the 'a' is replaced with an expression in terms of x

Let's solve for x

x*(2-x) = 244

2x-x^2 = 244

x^2-2x+244 = 0

If we use the discriminant formula, d = b^2 - 4ac, then we find that...

d = b^2 - 4ac

d = (-2)^2 - 4*1*244

d = -972

indicating that there are no real number solutions to the equation x^2-2x+244 = 0

So this means that 'x' and 'a' in those two original equations are non real numbers. If you haven't learned about complex numbers yet, then the answer is simply "no solution". At this point you would stop here.

If you have learned about complex numbers, then the solution set is approximately

{x = 1 + 15.588i, a = 1 - 15.588i}

which can be found through the quadratic formula

Note: it's possible that there's a typo somewhere in the problem that your teacher gave you.

The measure of ABC is 21 degrees

Answer:

The last one

Step-by-step explanation:

Since we already know an angle and a safe are equal we just need one more pair of corresponding angles