Substitute the values of x and y into the expression -3x^2 + 2y^2 + 5xy - 2y + 5x^2 - 3y^2. match that value to one of the numbers. 1. x=2 y= - = 14 2. x=0 y=2. = 1.665 3. x= -1 y= - = -1 4. x= .5 y= -1/ =  9.17 5. x= 3/4 y= 2/ = -11.25 6. x= square root of 2 y= square root of = 0.44

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.

‼️‼️‼️‼️‼️the pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to the temperature of the gas. if the pressure is 6 pounds per square inch when the temperature is 440 f, find the pressure exerted when the temperature of the gas is 380°f. (show work)