a new drug is being tested to measure its effectiveness in treating migraine headaches. the test drug is given to 110volunteers who suffer from migraine headaches, and a placebo is given to 110other volunteers who also suffer from migraine headaches. after two weeks, 83 of those who received the drug report an improvement in their migraine symptoms, and 18of those who received the placebo also report an improvement in symptoms. what percent of those who took the drug showed improvement? (round to the nearest whole number)

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

You should use a calculator for this.