3quater of the water in the tank is 57kg and 1 thirds of the water in a tank is 37kg how much does the tank weigh when there is no water

Can someone tell me if this is perpendicular? !

Solve for x. −3/4(x+2)=6 enter your answer in the box

Type the correct answer in each box. use numerals instead of words. the average number of subscribers to an online magazine each year from 2010 to 2015 is given in the table below. the average number of subscribers to the online magazine in 2010 was the percent increase in the average number of subscribers in 2011 to the average number of subscribers in 2012 was %. the maximum average number of subscribers to the online magazine in the years shown was