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Mrac [35]
3 years ago
10

Suppose a college surveyed its students and found that two-thirds of them sleep at least seven hours each night. on a campus of

918 students, how many students could be expected to sleep at least seven hours each night?
Mathematics
1 answer:
Rus_ich [418]3 years ago
4 0
The answer is <span>606 students.

2/3 is equivalent to 0.66

You multiply 918 and 0.66

918 x 0.66 = </span><span>605.88.

</span><span>You round 605.88 to the nearest whole which is 606 students.</span>
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Expand the brackets first
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factorise out the x
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Answer:

Lo primero que debemos saber, es que la gráfica de pastel nos permite dividir a una población, la cual sería el 100%, en porcentajes menores que representan algo.

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Si tomamos el cociente entre las ecuaciones:

x = 50% y  360° = 100%

obtenemos:

x/360° = 50%/100%

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Para los otros porcentajes hacemos lo mismo.

Para el de 20% tenemos:

y = 20%

planteamos la ecuación:

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Finalmente, para el de 10% tendremos:

z = 10%

planteando la ecuación como antes:

z/360° = 10%/100%

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