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fomenos
2 years ago
5

Plz answer it's important

Mathematics
1 answer:
Westkost [7]2 years ago
7 0

Answer:

AB = 4

Step-by-step explanation:

Since the line is horizontal then its length is the difference of the x- coordinates, that is

AB = | 8 - 4 | = 4 , or

AB = | 4 - 8 | = | - 4 | = 4

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Which of the following choices shows y = (x − 3)^2 − 25 in standard form?
Ksivusya [100]
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2 years ago
6x+3&gt;15 solve for a please
LenaWriter [7]

Answer:

x>2

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3 years ago
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murzikaleks [220]

Answer:

x-4y+4=0

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Step-by-step explanation:

We are given that a curve

y=\sqrt x

We have to find the equation of tangent at point (4,2) on the given curve.

Let y=f(x)

Differentiate w.r.t x

f'(x)=\frac{dy}{dx}=\frac{1}{2\sqrt x}

By using the formula \frac{d(\sqrt x)}{dx}=\frac{1}{2\sqrt x}

Substitute x=4

Slope of tangent

m=f'(x)=\frac{1}{2\sqrt 4}=\frac{1}{2\times 2}=\frac{1}{4}

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m=\lim_{x\rightarrow a}\frac{f(x)-f(a)}{x-a}

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By comparing we get a=4

Point-slope form

y-y_1=m(x-x_1)

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y-2=\frac{1}{4}(x-4)

4y-8=x-4

x-4y-4+8=0

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3 years ago
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