We have been given that a baseball coach graphs some data and finds the line of best fit. The equation for the line of best fit is 
,where x is the number of times at bat and y is the number of hits.
To find the number of hits in 175 times at bats, we will substitute 
in our given equation as:
Upon rounding to nearest whole number, we will get:
Therefore, the coach would expect 35 hits from a player who is at bat 175 times.
Answer:
let's use Pythagoras theorem,
h²=b²+l²
so,
ad²=ac²+dc²
6²=ac²+3²
36-9=ac²=27
√27 can be written as 3√3,
hence ac= 3√3
Answer:
The sample is 250 first-year students of the Concordia University
Step-by-step explanation:
When you are making a research you have to take into account two elements: The population and the sample.
The population refers to ALL the individuals that have the characteristic you are investigating, in this case the population of the researcher is the first year students al Concordia University, because he want to estimate the textbook costs for this students because it is not taken into account in the college costs.
The problem is thar if there are a thousand students of first year or more it will be very difficult to make the study because you he will need more resources, more time, and he will have to analyze more information, that's why he takes a SAMPLE that represent the whole population that in this case correspond to 250 first-year students of the Concordia University, this students will represent the population and as a conclusion of his work, he must say that in the costs of college education it must be include other costs such as textbook cost, because in average they have a cost of $300 per semester that must be added to the tuition cost.
No, line graphs are used only to show change over time
