How do we find the missing side of a shape when we are given the perimeter?

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

Which of the following values are in the range of the function graphed below? check all that apply ! - will give the answer "brainliest! "