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2 years ago

What is an equation of a parabola with the given vertex and focus? vertex: (5, 4) ; focus: (8, 4)

Mathematics

1 answer:

artcher [175]2 years ago

7 0

The parabola is opens upward.

a = (8 – 5)

= 3

Using the standard form:

(x – h)^2 = 4a(y – k)

(x -5)^2 = 12( y – 4)

In general form

x^2 -10x +25 =12y – 48

x^2 -10x -12y + 73 =0

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Akimi4 [234]

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<u>Solution:</u>

Given, The height that a ball bounces varies directly with the height from which it is dropped.

A certain ball bounces 30 cm when dropped from a height of 50 cm.

We have to find how high will the ball bounce if dropped from a height of 120 cm?

Now, according to given information,

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Now by Chris cross method, we get,

$\begin{array}{l}{n \times 50=30 \times 120} \\\\ {\rightarrow n=\frac{30 \times 120}{50}} \\\\ {\rightarrow n=\frac{3600}{50}} \\\\ {\rightarrow n=72}\end{array}$

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devlian [24]

Answer:

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Step-by-step explanation:

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