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fredd [130]
3 years ago
14

Este curso nuestro instituto tiene 473 alumnos. Si nos dicen que respecto al curso anterior se ha producido un aumento de inscri

pciones del 10 %, ¿cuántos alumnos había el curso anterior?
Mathematics
1 answer:
tester [92]3 years ago
7 0

Answer:

En el curso anterior había 430 alumnos.

Step-by-step explanation:

El curso tiene 473 alumnos. Nos dicen que respecto al curso anterior se ha producido un aumento de inscripciones del 10 %. Entonces, siendo x la cantidad de alumnos que había en el curso anterior, se puede plantear la ecuación:

x + 0.1*x= 473

Resolviendo se obtiene:

1.1*x=473

x= 473 ÷1.1

x= 430

<u><em>En el curso anterior había 430 alumnos.</em></u>

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Equation of the parabola in vertex form that passes through (4,-7) and has a vertex of (1,-6)
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Step-by-step explanation:

The vertex form of the equation for a parabola is given by

y = a(x - h)^2 + k

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y = a(x - 1)^2 - 6

Also, since the parabola passes through (4, -7), we can use this to find the value for a:

-7 = a(4 - 1)^2 - 6 \Rightarrow -7 = 9a - 6

or

a = -\frac{1}{9}

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2 years ago
What is the difference between Delta x and dx? ...?
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3 years ago
What is the product of a positive number and a negative number?
Natali5045456 [20]
Negative

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3 years ago
25,000(4+3x) =125,000
Amanda [17]
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If done correctly, your simplified equation should be 

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However, many mathematics teachers ask for fractional answers to be simplified.  To simplify fractions, we first find the GCF of both numbers, and then divide both the numerator and the denominator by the GCF.

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3 years ago
Write 8 * 10^-7 in standard form<br> 8*10^-7 =____
tino4ka555 [31]

Answer:

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Step-by-step explanation:

<u>Given</u>

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