Solve the equation for x. if a solution is extraneous, be sure to identify it in your final answer. square root of the quantity x plus 6 end quantity minus 4 equals x

Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.