Instruction Active
Using an Equation with Two Variables to Solve a problem
Try
This isosceles triangle has two sides of equal length, a,
that are longer than the length of the base, b. The
perimeter of the triangle is 15.7 centimeters. The
equation 2e +b-15.7 can be used to find the side lengths.
If one of the longer sides is 6.3 centimeters, what is the
length of the base?
cm
b b
is Activity

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain