The level of a lake was 8 inches below normal. It decreases 1 1/4 inches in June and 2 3/8 inches more in July. What was the new level with respect to the normal level?

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

Im so bad at fractions they are not my best math thing to work on

According to a study done by de anza students, the height for asian adult males is normally distributed with an average of 66 inches and a standard deviation of 2.5 inches. suppose one asian adult male is randomly chosen. let x = height of the individual. a) give the distribution of x. x ~ b) find the probability that the person is between 64 and 69 inches. write the probability statement. what is the probability?