Un latón es una aleación metálica de zinc con cobre. Para confeccionar una tubería de latón, una fábrica combina 4 partes de zinc en 21 partes de cobre. Calcular la cantidad de cobre y de zinc que hay en 200 kg de latón.

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250

Agrasshopper weighs 0.89 grams. express the grasshopper’s weight in scientific notation.