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yanalaym [24]
2 years ago
13

Which two expressions can be used to answer this question? 45% of the 647 students at Royal Oak High attended the football game.

How many students did not attend? A) 647 - 0.45(647); 0.55(647) B) 647 - 0.45(647); 0.45(647) C) 647 + 0.45(647); 0.45(647) D) 647 - 0.55(647); 0.55(647)
Mathematics
2 answers:
Serhud [2]2 years ago
5 0
A. since 45% of 647 is 291.15 and those are the students that attended so subtract that from the total and you get 355.85 or rounded to 355 because you cant have .85 of a person. Plus 100%-45%=55% so .55 of 647 are the ones who didn't attend
steposvetlana [31]2 years ago
3 0

Answer:

A.

Step-by-step explanation:

45% = 0.45 and 55% = 0.55.

To find the number of students who attended to the game we multiply the percentage by the total amount of students: 0.45(647). Then, the number of students who did not attend  is subtract the total and the number of students that attended: 647 - 0.45(647) = 355.

Other way is find the percentage of students who did not attend, that is 100-45 = 55% and with the same process of number of students who attended find the number of students who did not attend: 0.55(647) = 355.

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