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3 years ago

7

2.36 = -logx solve for x

1 answer:

arlik [135]3 years ago

4 0

Here's what you have to keep saying to yourself until it carves a new
groove into your brain and you don't have to think about it any more:

   <em> " log(x) = the power that 10 must be raised to </em>
<em>      in order to wind up with 'x'. "</em>

You said 2.36 = -log(x)

Multiply each side by -1 : log(x) = -2.36

Now translate it into the mantra:

   <em> The power that 10 must be raised to </em>
<em>   in order to wind up with 'x' is -2.36 .</em>

Do you see what that means ? ! ?

If the power that 10 must be raised to in order to wind up with 'x'
is -2.36, then all you have to do to find 'x' is raise 10 to the power
of -2.36 ! You can do that with about 4 clicks on your calculator.

   10^(-2.36) = <em>0.004365...</em> (rounded)

And if you don't quite believe it, it's even easier to check it.
Punch " 0.004365 " into your calculator, and then touch the
" 10^x " key, and something very close to -2.36 will pop up
right there, before your wondrous eyes.

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A beam of light from a monochromatic laser shines into a piece of glass. The glass has thickness L and index of refraction n=1.5

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Additional information to complete the question:

How long does it take for a short pulse of light to travel from one end of the glass to the other?

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T = ___________ s

Answer:

$T = \frac{15}{f}$

Step-by-step explanation:

Given:

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What is 2 7/8 plus 2 3/8 ?

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2 years ago

Read 2 more answers

It has been said that newspapers are disappearing, replaced by various electronic media. In 2004, newspaper circulation (the num

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Answer:

A. $y=-1.2x+59$

B. 42.2 million

Step-by-step explanation:

Part A:

Given:

Newspapers circulated in year 2004, $y_{1}=59\textrm{ million}$

Newspapers circulated in year 2014, $y_{2}=47\textrm{ million}$

Let the time $x$ start at the year 2004. So, $x_{1}=0$

For the year 2014, $x_{2}=2014-2004=10$

Therefore, linear relationship between newspapers circulated and time passed since 2004 is given as:

$y-y_{1}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}(x-x_{1})\\y-59=\frac{47-59}{10-0}(x-0)\\y-59=-\frac{12}{10}x\\y=-1.2x+59$

Therefore, the equation describing the relationship is: $y=-1.2x+59$

Part B:

For the year 2018, $x=2018-2004=14$

Plug in 14 for $x$ in the above equation and solve for $y$ . This gives,

$y=-1.2(14)+59\\y=-16.8+59\\y=42.2$

Therefore, in the year 2018, the newspaper circulation will be 42.2 million.

8 0

2 years ago