I am not sure what you are asking.....
Assuming the acetone is a 100% solution:
15 / (15+28) x 100% = 34.88 %
674 / 68 is 674 divided by 68 = 9 r 62 = 9 62/68 = 9 31/34
Use the '2nd' button before the sin button
Factors to (3x-2)(x+3) = 0
so x = -3 or 2/3
9/8 = l/w = l/16
9/8 (16) = w w = 18
Area = l x w = 18 x 16 = 288 sq m
Good for Beric!
Use distributive law to get:
21 + 7t - 5t - 10
11 + 2t
Subtract 3x from each side and add 3 to each side to get:
5 < 2x now divide by 2
5/2 < x or x > 5/2
