The amount of money college students spend each semester on textbooks is normally distributed with a mean of S195 and a standard deviation of S20. Suppose you take a random sample of 100 college students from this population. There would be a 68% chance that the sample mean (x) amount spent on textbooks would be between: A. S191 and $199. B. S193 and $197. C. S175 and $215. D. S155 and $235.

m a t h w a y. c o m

step-by-step explanation:

5

step-by-step explanation:

step-by-step explanation:

at each of the parallel lines adjacent angles are supplementary. the angles have special names identifying their positions with respect to the parallel lines and transversal. they are corresponding angles, alternate interior angles, or alternate exterior angles. an angles is congruent to its matched angle.

18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²