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iogann1982 [59]

3 years ago

11

Mr. Hamilton surveyed his class to find the total number of hours each of his students slept the previous night. The histogram s

hows the results of the survey.
How many students slept at least 8 hours?

2 answers:

IrinaK [193]3 years ago

7 0

9 students
I really hope this helps

VMariaS [17]3 years ago

5 0

Answer:

9 students

Step-by-step explanation:

6 students slept 8-11 hours, and 3 students slept 12-15. 6 + 3 = 9.

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How many solutions will this system of equations have? x - 2y = 24 3x - 6y = 72

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$x-2y=24 \ \ \ \ \ \ \ \ \ \ \ \ \ | \times (-3) \\
3x-6y=72 \\ \\
-3x+6y=-72 \\
\underline{3x-6y=72 \ \ \ \ \ \ \ } \\
3x-3x+6y-6y=72-72 \\
0=0 \\ 
always \ true \\ \\
\hbox{infinitely many solutions}$

The answer is B.

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