Lines L and M are parallel. Therefore, angle 19x equals to the angle adjacent to angle 17x.
This means 19x + 17x = 180°
36x = 180°
x = 180°/36 = 5°
Hope that helps you :)
Answer:
x = −30.5
Step-by-step explanation:
Are you familiar with z-scores? According to the definition,
(given numerical value) - (mean)
z = ---------------------------------------------
standard deviation
Thus, with the given numerical value equal to 410 and the std. dev. equal to 75, the corresponding z-score is
410-500 -90
z = --------------------- = --------------- = -1.2
75 75
Use a table of z-scores to determine the area under the standard normal curve to the left of z = -1.2. Your result is the probability that a given family chosen at random spends less than $410 per month.
See the attached picture: