Use the definition of continuity and the properties of limits to show that the function f(x)=x^2-49/(x^2+6x-7)(x^2+14x+49)

In triangle abc segment de is parallel to the side ac . (the endpoints of segment de lie on the sides ab and bc respectively). find de, if ac=20cm, ab=17cm, and bd=11.9cm;

Find the area of a trapezoid with bases 14 cm and 18 cm and height 10 cm. 160 cm2 140 cm2 180 cm2 126 cm2

The table above shows approximate conversions from gallons to liters. what is the value of x?