Please help ,, supply the missing reason in statement 4 of the proof of the isosceles triangle theorem.​

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?

Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)