There are two major cell phone providers in the colorado springs, colorado area, one called htc and the other, mountain communications. we want to investigate the "churn rate" for each provider. churn is the amount of customers or subscribers who cut ties with a company during a given time period. at the beginning of the month, htc had 10,000 customers; at the end of the month, htc had 9810 customers for a loss of 190. for the same month, mountain communications started with 12,500 customers and ended the month with 12,285 customers, for a loss of 215. at the 0.01 significance level, is there a difference in the churn rate for the two providers?

the answer is (2x+8)²= 16

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

two data sets with the same median will not have the same varaibility

step-by-step explanation: