( x + 4), (x - 9) = 4x
Hope this helps!
The answer is .90º + 90º = 180º, <span>.90º is not an obtuse angle</span>
Answer:
Divide the 1st equation by 2
a + 2c = 19
Divide the 2nd equation by 3
a + c = 13.5
Subtract the 1st equation and the 2nd equation
c = 5.5
Substituting back into the 2nd equation will give:
a + 5.5 = 13.5
a = 8
Step-by-step explanation:
