The international bottled water association says that americans on the average drink 4.6 servings of water a day (measured as 8-oz servings). assume that the number of servings of water is approximately normally distributed with a standard deviation of 1 servings. (give your answers correct to four decimal places.) hint: this is a z-score problem. draw the curve and write in the mean, then think about the problem. (a) what proportion of americans drink more than the recommended 8 servings? (b) what proportion of americans drink less than half the recommended 8 servings?

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

i think the answer is seven, for if i'm being useless °ω°

step-by-step explanation: