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xxMikexx [17]
3 years ago
12

Seventy-five students are going to the dance. This was 25% of all the students in the school. What is the total number of studen

ts in the school?
Mathematics
2 answers:
Sloan [31]3 years ago
8 0

Answer:

300

Step-by-step explanation:

25% of 100 is 4.    4 x 75=300

Have a blessed day! I hope this helps!

dolphi86 [110]3 years ago
3 0

Answer: 300 students

Step-by-step explanation: If 75 was 25% of student in the school, then you turn the 25% to a 4 because it how much till it turns to 100% 75x4=300.

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I think you're factoring this...? You can do that by grouping here.  Put the 4 terms in groups of 2 and factor out the greatest common factor. What's left behind is a common binomial factor that can also then be factored out. Like this:
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Factoring what we can out of both sets gives us this:
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The 2n-5 is a common factor between both the sets of terms, which in turn can also be factored out:
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I'm not exactly sure what you are doing with this, but we can keep factoring for the sake of completeness.  The 5 n-squared term can also be factored:
5 n^{2}-8=0 and 5 n^{2} =8 and n^{2} = \frac{8}{5} so n= \frac{ \sqrt{8} }{ \sqrt{5} }.  Simplifying that down its simplest is this:
n=+/- \frac{2 \sqrt{10} }{5}
So your three factors for that polynomial are
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