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Mazyrski [523]
3 years ago
9

There are 20 students in a math class who have brown hair. This represents 80 percent of the students in the class. Which equati

on can be used to find the total number of students in the math class?

Mathematics
2 answers:
Ghella [55]3 years ago
6 0
25 students is the answer!
bonufazy [111]3 years ago
6 0

Answer:                                

Step-by-step explanation:

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Polygon with three interior angles whose sum 180 degrees
mojhsa [17]

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Triangle

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A triangle has three vertexes, and therefore three interior angles. Those angles also sum to 180 degrees because of the formula (n-2)*180, where n is the number of sides that a polygon has. Plugging in 3, you get  1\cdot 180, or just 180 degrees. Hope this helps!

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3 years ago
Rebecca went swimming yesterday. After a while she had covered one fifth of her intended distance. After swimming six more lengt
alukav5142 [94]

Answer:

Option E.

Step-by-step explanation:

Let the intended length of Rebecca's swimming is = x units

and we assume the length of the pool = l units

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So \frac{x}{5}+6(l)=\frac{x}{4}

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Therefore, Rebecca has to complete 120 lengths of the pool.

Option E is the answer.

4 0
2 years ago
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