Identify the expression that does not belong and explain your reasoning: 5.25 • 10^7 (2.1 • 10^2)(2.5 • 10^5) 52.5 • 10^8 (2.1)(2.5) • 10^2+5

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.