Equation for line passing through (4,3) perpendicular to y=5x+4

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?