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ioda
3 years ago
10

Un profesor realiza una prueba con 70 preguntas, cada una con igual valor. Un

Mathematics
1 answer:
Valentin [98]3 years ago
3 0

Tenemos un problema sobre porcentajes. Veremos que la calificación del alumno es un 80%.

En este caso sabemos que la prueba tiene 70 preguntas, por lo que la cantidad de referencia (el 100%) será 70.

Y sabemos que el estudiante responde correctamente 56 preguntas.

Lo que queremos hacer es ver que porcentaje representa este segundo número.

Para ver esto planteamos dos ecuaciones:

56 = x

70 = 100%

Para resolver esto, debemos ver el cociente entre esas ecuaciones:

56/70 = x/100%

Ahora resolvemos para x:

(56/70)*100% = x = 80%

Es decir, el alumno obtiene una clasificación del 80%.

Si quieres aprender más puedes leer:

brainly.com/question/18546712

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What is the equation of the line that passes through the point (-2, 7) and has a slope of zero
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Answer:

y = 7 is the equation of the line that passes through the point ( -2, 7 ) and has a slope of zero.

Step-by-step explanation:

Given:

Let,

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Formula for , equation of a line passing through a point (  x1 , y1 ) and having a slope m is given by

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Now substituting the values of x1 = -2 and y1 = 7 and slope m = 0 we get,

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Which is the required equation of a line passing through the point ( -2, 7 ) and slope zero

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3 years ago
In ΔMNO, the measure of ∠O=90°, ON = 35, NM = 37, and MO = 12. What is the value of the tangent of ∠M to the nearest hundredth?
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Step-by-step explanation:

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