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Delicious77 [7]
3 years ago
10

The histogram shows the number of hours that students in a class slept last night. How many students slept at least 8 hours?

Mathematics
2 answers:
Vlad [161]3 years ago
6 0

Answer: I believe it would be 8 people who slept atleast 8 hours.

Step-by-step explanation:

hichkok12 [17]3 years ago
6 0

Answer:

10 students slept at least 8 hours

Step-by-step explanation:

The third group of numbers, 8-11 hours of sleep, begins in 8, making it the minumum number group that we can use. The second eligigble group is 12-15 hours because it garuntees at least 12 hours of sleep. When add the 8 students who sleep for 8-11 hours to the 2 students who sleep 12-15 hours, we get 10 students who sleep 8+ hours frequently.

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Mary works in a factory that produces 1000 computers each day. When 25 computers were sampled, 7 were found to be defective. Est
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Step-by-step explanation:

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2 years ago
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Of the 60 books on a bookshelf, 24 are nonfiction.what percent of the books are nonfiction
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Please help, I will mark brainliest.
Bess [88]

Answer:

Step-by-step explanation:

Total number of students who roller skated = 80

Number of students who roller skated with laser tag = 39

Number of students who roller skated with no laser tag = 80 - 39 = 41

Therefore, percentage of students who roller skated with no laser tag = \frac{41}{154}\times 100 = 27%

Since, number of students who played laser tag = 85

Percentage of students who played laser tag = \frac{85}{154}\times 100 = 55%

Total number of students who played no laser tag = 45% of 154 = 69

Number of students with no roller skates and no laser tag = 69 - 41 = 28

Percentage of students with no roller skates and no laser tag = \frac{28}{154}\times 100        

                                                                                                       = 18%

Percentage of students who played with no rollers skates = (30 + 18)%

                                                                                                 = 48%

                                  Laser tag                 No laser tag                Total

Roller skate                     25%                           27%                      52%

No Roller skate               30%                           18%                      48%

Total                                55%                           45%                      100%

7 0
3 years ago
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