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vaieri [72.5K]
3 years ago
15

Need help with this question for an exam!

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
4 0

Answer:

The answer is x=-2 and x=4

Step-by-step explanation:

The attachment 1 is the graph of f(x), the attachment 2 is the graph of g(x)

Mergin the two functions, you will have this

Wichh shows you that the 2 graph intersect when x=2 and x=4

It is more straight to solve the equation

\frac{-x^{2} }{2} = -x-4

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Find an equation of the circle that has center (-4,3) and passes through (6,-4).
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Answer:

(x+4)^2+(y-3)^2=149

Step-by-step explanation:

The equation of a circle is (x-h)^2+(y-k)^2=r^2 where (h,k) is the center of the circle and r is the radius of the circle.

Given that (h,k)\rightarrow(-4,3) and it passes (6,-4), their distance between each other must the radius of the circle, so we can use the distance formula to find the radius:

d=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}\\\\d=\sqrt{(-4-3)^2+(6-(-4))^2}\\\\d=\sqrt{(-7)^2+10^2}\\\\d=\sqrt{49+100}\\\\d=\sqrt{149}

Therefore, if the length of the radius is r=\sqrt{149} units, then r^2=149, making the final equation of the circle (x+4)^2+(y-3)^2=149

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2 years ago
Un camión admite en su interior 68,25 toneladas de patatas. Se cada caja de patatas pesa 22,75 Kg, ¿cuántas cajas de
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Answer:

<em>El camión lleva 3000 cajas de patatas</em>

Step-by-step explanation:

<u>Proporciones</u>

La capacidad de carga de un camión es de 68.25 Toneladas de patatas.

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Step-by-step explanation:

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