Each figure shows a triangle with one or more of its medians. I need an explanation and answer for this please and thank you!

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4