Consider the following system with the solution (1,3)
equation 1 of the system : 2x+y=5
equation 2 of the system: x -2y =-5
prove that replacing the first equation with the sum of that equation and a multiple of the other produces a system with the same solution
posible answers : used multiplication property of equality to write a new equation
used addition property of equality to write a new equation added equations 1 and 3

See attachment below and find the equivalent of tan(∠qsr)

Plz hurry evaluate the expression a+b where a=8 and b=19

Write the contrapositive of the conditional statement. determine whether the contrapositive is true or false. if it is false, find a counterexample. a converse statement is formed by exchanging the hypothesis and conclusion of the conditional. a) a non-converse statement is not formed by exchanging the hypothesis and conclusion of the conditional. true b) a statement not formed by exchanging the hypothesis and conclusion of the conditional is a converse statement. false; an inverse statement is not formed by exchanging the hypothesis and conclusion of the conditional. c) a non-converse statement is formed by exchanging the hypothesis and conclusion of the conditional. false; an inverse statement is formed by negating both the hypothesis and conclusion of the conditional. d) a statement not formed by exchanging the hypothesis and conclusion of the conditional is not a converse statement. true