Answers
We can use cluster sampling here. In this case, the population is divided into sampling units or clusters, for example, zone within educational or geographical areas. Having divided the population into clusters, we can use simple random sampling to select the clusters to be examined. Consider Asian American as one cluster, African american as another cluster and so on. According to the size of the cluster randomly select individuals from each cluster for a total of 100 individuals.
Generally there would be bias in accordance to the differnce in ethnicity. Also if the selected students are in a younger, then the teachers opnion would play a very big role there.
The question itself is a source of bias and it seems to give an idea to the students to think in these lines. The question can be better worded to get a correct answer. Even if there is equal opportunity, some students may read the question and give a negative answer.
To answer the question above as to the scale factor of the dilation which in an image not provided, two circles are centered at A, The circle containing B was dilated to produce circle containing B'. The answer is number 1.
I hope my answer has come to your help. God bless and have a nice day ahead!
If you are describing a quadrilateral, then the answer is
m1 + 73 + 107 + 92 = 360
m1 + 272 = 360
m1 = 360 - 272
m1 = 88 degrees.
If it is anything but a quadrilateral, it would be a good idea to state what it is.
Answer:
The equation of parabola is standard form is 
Step-by-step explanation:
Given equation of parabola is,
In order to find the equation of parabola in standard form, eliminate x from left side of equation and use completing square method to find the equation.
First step is to add x on both side of equation.
Rewriting,
Now applying completing square method as follows.
Following are the steps for calculation of this method.
Find the last term of above equation by using below formula,
Now coefficient of y is 8.
Simplifying,
Second step is to add and subtract the last term.
Rewriting,
Since 
Using above formula,
Therefore, the equation of parabola in standard form is
