HELP!!
Consider the system of equations.

5x+4y=−2
2x−4y=6
Which property could be used to write the equation 7x = 4 as the first step to solving the system of equations?

Division Property of Equality

Distributive Property of Equality

Addition Property of Equality

Substitution Property of Equality

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

Graph the equationy= x+3[tex]y = x + 3[/tex]