Kims age is twice of her sister when you add to her sisters age you get 3 how old is each sister (a) write an equation that represents thevsituation explain any varible used (b) solve the equation form part a show your work state your solution as a complete sentence

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25

What is the area of the shaded sector?

50 points and will mark brainlest if you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking: