7/15 will be the most you can simplify
Xm=(2+2)/2=2
Ym=(1+4)/2=2.5
(2,2.5)
Answer: The answer is 870
If the last digit is 0, then we do not have to do any rounding, because it is already to the ten.
X=<span><span><span>−7</span>±<span>√<span>49<span><span>−11</span><span>v2</span></span></span></span></span><span>v2
but if you are telling me for solving for something else tell me</span></span>