3 years ago

How to solve this |9x-12|<-4

1 answer:

5 0

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mario62 [17]

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TRUE OR FALSE: Two chords in the same circle are congruent if and only if the associated central angles are congruent.

Lostsunrise [7]

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Step-by-step explanation:

True

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Find the slope from an equation ??? Y = -x

lord [1]

Answer:

<h2>The answer is - 1</h2>

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

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Hope this helps you

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3 years ago

Use linear approximation to approximate √25.3 as follows.

Sophie [7]

The idea is to use the tangent line to $f(x)=\sqrt x$ at $x=25$ in order to approximate $f(25.3)=\sqrt{25.3}$ .

We have

$f(x)=\sqrt x\implies f(25)=\sqrt{25}=5$

$f'(x)=\dfrac1{2\sqrt x}\implies f'(25)=\dfrac1{10}$

so the linear approximation to $f(x)$ is

$L(x)=f(5)+f'(5)(x-5)=5+\dfrac{x-5}{10}=\dfrac x{10}+\dfrac92$

Hence $m=\frac1{10}$ and $b=\frac92$ .

Then

$f(25.3)\approx L(25.3)=\dfrac{25.3}{10}+\dfrac92=\boxed{7.03}$

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3 years ago