PLS HELP I WILL GIVE BRIANLY A box has a certain number of blue, white, red and yellow marbles. 2/5 of the marbles are blue. The number of white, red and yellow marbles in the box are equal. Which of the following could be the number of marbles in the box?​

Hello people, i have a math question that i need with, me, i will give the correct one brainiest, and for the other correct people, a and 5 stars.

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%