The answer is 1.55
Explanation:
The he first step to find the range is to make all the values either fractions or decimal/integer numbers. Below I show the process to make all the numbers decimals/integers
Height in miles
2.75: This number is decimal because of this it does not have to be modified
 
  : This number includes a rational number and a fraction to make this just one number write the first number as a fraction, multiply, and then divide the top number by the low number (denominator).
: This number includes a rational number and a fraction to make this just one number write the first number as a fraction, multiply, and then divide the top number by the low number (denominator).
 ×
 × =
 = 
 : This number is a fraction to simplify it divide the nominator by the denominator:
 : This number is a fraction to simplify it divide the nominator by the denominator:


 : Write the integer as a fraction and then simplify
: Write the integer as a fraction and then simplify
 ×
 ×
Now, from these values, the higher one is 2.75 and the lowest is 1.2, to find the range find the difference between these two numbers 2.75 - 1.2 = 1.55
 
        
             
        
        
        
Answer:

And if we use the normal standard distribution or excel we got:

Step-by-step explanation:
For this case we have the following info given:
 represent the mean
 represent the mean
 represent the standard deviation
 represent the standard deviation
 represent the sample size
 represent the sample size
The distribution for the sample size if we use the central limit theorem (n>30) is given by:

And for this case we want to find the following probability:

And for this case we can use the z score formula given by:

And replacing we got:

And if we use the normal standard distribution or excel we got:

 
        
             
        
        
        
Your answer is 76m.
a^2+b^2=c^2
57^2+b^2=95^2
3249+b^2=9025
b^2=5776
Take sqr on both sides and you get:
b=76m
        
             
        
        
        
The time taken by the boat to travel 32 miles downstream is 2.1 hours and for upstream 3.56 hours.
<h3>What is speed?</h3>
Speed is defined as the ratio of the time distance traveled by the body to the time taken by the body to cover the distance.
 
Given that:-
- A paddleboat moves at a rate of 12 mph in still water. If the rover’s current moves at a rate of 3 mph.
- how long will it take the boat to travel 36 miles downstream and 36 miles upstream?
The time taken by the boat upstream will be calculated as:-
( B + W ) Td = D 
( 12 + 3 ) Td = 32
( 15 ) Td = 32
Td = 32 / 15 = 2.1 hours
The time taken by the boat downstream will be calculated as:-
( B - W ) Tu = D 
( 12 - 3 ) Tu = 32
9 Tu = 32
Tu = 32 / 9 = 3.56 hours.
Therefore the time taken by the boat to travel 32 miles downstream is 2.1 hours and for upstream 3.56 hours.
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