To convert 50 hectares to acres, divide 50 by 4.05 * 10-1. true or false?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

Which is f(5) for the function –2x2 + 2x - 3?

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?