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stepan [7]
3 years ago
6

Jenny surveyed 40 students at her school and found that 0.55 of the students she surveyed said their favorite class is math. Ano

ther 25% of the students she surveyed reported that their favorite class is science. How many more students in the survey prefer math over science?
A 12
B 22
C 30
D 32
Mathematics
1 answer:
Leno4ka [110]3 years ago
7 0
C.) 30 since they both have 5's just take them out then subtract 50 and 20 *but make sure u take out the decimal though* so after u subtract u will get 30 then line it up and put the decimal back then it will be .30
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Umnica [9.8K]

Answer:

x=16.1

Step-by-step explanation:

-4.5= -0.5(x -7.1)

Divide both sides by -0.5

9=x-7.1

Add 7.1 to both sides

16.1=x

Hope this helps!

7 0
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sukhopar [10]

Answer:

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Step-by-step explanation:

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2 years ago
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Answer:

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3 years ago
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kvv77 [185]
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Replace the b in the second equation with
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4 0
3 years ago
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cestrela7 [59]
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% Mark Up = Mark Up/ Cost Price  x 100%

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Hope this helps :)
3 0
3 years ago
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