Answer:
<em> All college freshman </em>is called <em>Population and Right handed students are excluded is called sample from Population</em>
Step-by-step explanation:
<u>Explanation</u>:-
<em>Population:</em>- The total of the observations which we are concerned
given data <em>all college freshman </em>is called <em>Population</em>
<u><em>Sample</em></u><em> :-</em>
<em>A sample is a subset of a Population</em>
<em>Given data all college freshman </em>is called <em>Population and Right handed students are excluded is called sample from Population</em>
Answer:
380
Step-by-step explanation:
285 / x = 75 / 100
Cross multiply 28500 = 75x
Divide by 75 380
Answer:
- 39 quarters and 41 nickels
Step-by-step explanation:
Let the number of quarters be x and nickels be y.
<u>Given:</u>
- Quarter is 25 cents
- Nickel is 5 cents
- Number of coins is 80
- Total amount is $11.80 = 1180 cents
<u>We have equations:</u>
- x + y = 80
- 25x + 5y = 1180
<u>Solve the system by elimination, subtract 5 times the first equation from the second one:</u>
- 25x + 5y - 5x - 5y = 1180 - 80*5
- 20x = 780
- x = 780/20
- x = 39
<u>Find the value of y:</u>
- 39 + y = 80
- y = 80 - 39y = 41
<u>Verify:</u>
- 25*39 + 5*41 = 975 + 205 = 1180
