1. The heights of 9 students of a class are as follows (in cm): 155, 160, 145, 150, 147, 152, 144 148
a. Find the average height of the students in this class.
b. Is this a sample or a population? Explain
c. What is the mean absolute deviation of this data set?

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I really need help this is an important grade please

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

ans789

step-by-step explanation:

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.

$3,200 x 7.25% = $3,200 x .0725 = $232 interest monthly

$232 monthly x 12 annual = $2, 784

step-by-step explanation: