Alab technician mixed a 590 ml solution of water and alcohol. if 3% of the solution is alcohol. how many milliliters of alcohol were used, and how many milliliters of water were used?

Since 3%=0.03, we can multiply 590 by that to get 17.7 milliners of alcohol. Since there is only alcohol and water, we have 590-17.7=572.3 drops of water

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle