You should change the y by the number given
P=6-2*-5
P=16
You are told that y=-5, so just use that value for y in the second equation...
5x+4(-5)=-20
5x-20=-20
5x=0
x=0 so the solution, when the lines intersect, is the point (0,-5)
She can measure the temperature, if it will be equal or more than 100, then water is boiling otherwise not.
A circle is the set of all points in a plane equidistant from a given point, as the mathematical definition holds. For a typical definition, you will take a point A and a specified distance r and the set of all the points at distance r from A is a circle.
Side 1: 17 Cm.
Side 2: 7 Cm.
Side 3: 14 Cm.
Hope This Helped.
