Find the slope of a line having points (15 sec, 10 cm) and (35 sec, 25 cm). a) 4 cm/3 sec

b) 3 cm/4 sec

c) 1 cm/2 sec

d) 2 cm/1 sec

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9

7+(3n++8) what is the answer to this?