In one ivy tech region the number of students in math 136 is 20% more than the number of students in math 123. if there are 480 students in math 136, how many students are in math 123?

Number of students in Math136 = 480

We are given that the number of students in Math136 is 20% more than the number of students in Math123. Let the number of students in Math123 be x. So we can set up the equation as:

Number of students in Math136 = 20% more than number of students in Math123

Number of students in Math136 = 20% more than x

480 = 20% more than x

480 = 20% of x + x

480 = 0.20x + x

480 = 1.20(x)

x = 480/1.20 = 400

This means, there are 400 students in Math123.

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.