Written as an inequality- x+18<28
85700
8570
85.7
8.57
0.857
Each time, you divide by 10 (move the decimal place 1 place value to the left).
Answer:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form:(30/19,2/19)
Equation Form: x=30/19, y=2/19
You are correct there's at least one obtuse angle