Que operaciones mateamticas se ulizan para identificar las distancias reales al trabajar con escalas

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6

Determine the lengths of the sides of the rectangle using the given area. give answers both exactly and approximately (to the nearest tenth). the area of the rectangle is 46 cm2.

20 sharpened pencils are placed in a box containing an unknown number of unsharpened pencils suppose 15 pencils are removed at random and five of the remove pencils are sharpened based on this is it reasonable to assume that the number of unsharpened pencil is 40 explain your reasoning