Which property is shown in the matrix addition below? {5,-7,6.2,12} + {[-1,0.4,-9.9,0] + [0,0,-8.5,2]}={[5,-7,6.2,12] [-1,0.4, -9.9,0]}+[0,0,-8.5,2] inverse property identity property commutative property associative property

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Una caja de galletas contiene 16 paquetes y cada una de estas tiene 12 galletas y se quieren repartir entre 6 niños ¿de cuantas galletas le toca a cada niño?