A 13 ounce gold chain of 20% gold was made from a melted down 5- ounce charm of 5% golden locket. What percent of the locket was pure gold

With finding limits of multi variable !

Which statements are true about additional information for proving that the triangles are congruent check all that apply

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.