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3 years ago

HELPP QUICK PLS ILL GIVE BRAINLIEST

Mathematics

1 answer:

ryzh [129]3 years ago

7 0

Answer:Part A: 13

Step-by-step explanation: look at the graph

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Which point is on the graph of f(x)=2x= 2.5%?

katovenus [111]

Answer: The parabola has its concavity downwards, so we need a function in the model:

With a negative value of 'a'

The vertex is (0,0), so we have that:

The x-coordinate of the vertex is given by the equation:

So we have a function in the model:

With a < 0

The only option with this format is B:

Step-by-step explanation:

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3 years ago

Lella will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of $46 and costs an ad

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The plans cost the same at 125 miles. the cost is $63.50

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3 years ago

Derive the equation of the parabola with a focus at (-2,4) and a directrix of y=6 . Put the equation in standard form

Maru [420]

Answer:

$y = - \frac{1}{4} {(x + 2)}^{2} + 5$

Step-by-step explanation:

The vertex of this parabola is the midpoint of the focus (-2,4) and where the directrix intersects the axis of symmetry of the parabola (-2,6)

This parabola must open downwards due to the position of the directrix and has equation of the form:

${(x - h)}^{2} = - 4p(y - k)$

where (h,k) is the vertex.

This implies that:

$h = - 2$

and

$k = \frac{4 + 6}{2} = 5$

The value of p is the distance from the vertex to the focus:

$p = |6 - 5| = 1$

We substitute all the values into the formula to get:

$(x - - 2)^{2} = - 4(1){(y - 5)}$

${(x + 2)}^{2} = - 4(y - 5)$

$y = - \frac{1}{4} {(x - 5)}^{2} + 5$

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3 years ago

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Rom4ik [11]

Reflection reflection reflection reflection

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3 years ago

Read 2 more answers

Let f\left(x\right)=\frac{2}{x}f ( x ) = 2 x and g\left(x\right)=\frac{x}{x-1}g ( x ) = x x − 1. Find the domain of \left(\frac{

Black_prince [1.1K]

Answer:

The domain is (-∞,0) ∪ (0,1) ∪ (1, +∞)

Step-by-step explanation:

In order to be able to compute f/g (x), we need that x is on the domain of f and in the domain of g.

f(x) = 2/x

In order to be able to compute f(x), we need that the denominator is different from 0, hence x≠0.

g(x) = x/x-1

In order to be able to compute g(x). we need x-1 to be different from 0, thus x≠1.

We also need the denominator of f/g (x) to be different from 0, hence g(x) ≠ 0. In order for g(x) = x/x-1 to be 0, the numerator x should be 0, as a result, we need x≠0 in order to have g(x) ≠ 0.

The domain of f/g (x) is every real nummber besides 0 and 1, in other words, it is (-∞,0) ∪ (0,1) ∪ (1, +∞).

6 0

4 years ago