HELP PLEASE I WILL GIVE 13 POINTS

Mathematics

1 answer:

kenny6666 [7]3 years ago

3 0

Answer:

this difference indicates that the results are independent but not reliable.

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Round 2.8962 to the nearest hundredth do not write extra zeros

pashok25 [27]

Answer:

2.9

Step-by-step explanation:

2.8962 rounded to the nearest hundred is 2.90

4 0

2 years ago

NO LINKS!!! Please help fill in the blanks. Part 10a.

pogonyaev

Sound level is measured in decibels (dB).

The equation $\beta = 10\log\left(\frac{I}{I_0}\right)$ , where $I_0$ is the intensity of the threshold sound a human can hear ( $10^{-12}$ $\text{watts}$ / $\text{meter}^2$ ) and $I$ is the intensity of the sound being measured, gives the sound level, $\beta$

Example:

What was the intensity of the launch of NASA's Saturn V rocket, about 200 dB?

$\beta = 10\log\left(\frac{I}{I_0}\right)\\\\\text{Substitute.} \ 200 = 10\log\left(\frac{I}{10^{-12}}\right)\\\\\text{Isolate the log.} \ 20 = \log\left(\frac{I}{10^{-12}}\right)\\\\\text{Rewrite into exponential form.} \ \frac{I}{10^{-12}} = 10^{20}\\\\\text{Solve for the variable}\\ \ I = (10^{20})(10^{-12}) = 10^8 = 100,000,000 = \text{100 million watts/}m^2$