3 years ago

What table shows a proporioal relationship between x and y

Mathematics

1 answer:

katen-ka-za [31]3 years ago

4 0

how can i help with the following problem if there are no tables

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Which fraction is equal to 1/4

Morgarella [4.7K]

A fraction that can be equaled to the same as 1/4 is 2/8. Now 2/8 is the larger fraction that can be shortened to 1/4.

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3 years ago

8p - 15 - 49<br> what’s p and what’s 8p

lakkis [162]

That answer is 8 (p-8)

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3 years ago

What is the equation of the quadratic graph with a focus of (3, 1) and a directrix of y = 5?

telo118 [61]

Answer:

$f(x)=-\frac{1}{8}(x-3)^2+3$

Step-by-step explanation:

We want to find the equation of the parabola with a focus of $(3,1)$ and directrix $y=5$ .

Considering the directrix, the quadratic graph must open downwards.

The equation of this parabola is given by the formula,

$(x-h)^2=4p(y-k)$ , where $(h,k)$ is the vertex of the parabola.

The axis of this parabola meets the directrix at $(3,5)$ .

Since the vertex is the midpoint of the focus and the point of intersection of the axis of the parabola and the directrix,

$h=\frac{3+3}{2}=3$ and $k=\frac{5+1}{2}=3$ .

The equation of the parabola now becomes,

$(x-3)^2=4p(y-3)$ .

Also $|p|$ is the distance between the vertex and the directrix.

$|p|=2$

This implies that $p=-2\:or\:2$ .

Since the parabola turns downwards,

$p=-2$ .

Our equation now becomes,

$(x-3)^2=4(-2)(y-3)$ .

$(x-3)^2=-8(y-3)$ .

We make y the subject to get,

$y=-\frac{1}{8}(x-3)^2+3)$ .

This is the same as

$f(x)=-\frac{1}{8}(x-3)^2+3)$ .

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3 years ago

Could someone tell me the correct answer and how to do this. Plz help meeee I'm crying because I don't know how to do this stuff

WINSTONCH [101]

Hey don't cry . I'm not good at math either but try to take a deep breath.

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3 years ago

A coin is tossed 5 times and a tail is the outcome each time. what is the probability of getting a tail on the sixth throw

Norma-Jean [14]

I believe it would be
1/5

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3 years ago