View lab if you formed an algebraic equation to model the statement “three times a number is equal to nine,” how many variables would be in the equation?

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)