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Novay_Z [31]
3 years ago
14

Neurons are cells in the nervous system that process and transmit information . And average neuron is about 5 • 10^negative 6 me

ter in diameter . A standard table tennis ball is 0.04 meter in diameter . About how many times as great is the diameter of a ball than a neuron ?
Mathematics
2 answers:
mrs_skeptik [129]3 years ago
8 0
Since this is about finding the relative value of one parameter to another, our approach of solving this problem is by finding the ratio. In this way, we can compare the degree of their difference.

Ratio = Diameter of ball/Diameter of neuron
Ratio = 0.04 m/5×10⁻⁶ m
Ratio = 8,000
Therefore, the tennis ball is 8,000 times larger than the neuron,
svetlana [45]3 years ago
5 0

Answer:

The tennis ball is 8000 times larger than the neuron.

Step-by-step explanation:

Average neuron is about 5\times10^{-6} meter in diameter .

A standard table tennis ball is 0.04 meter in diameter .

To tell about how many times as great is the diameter of a ball than a neuron, we will divide the tennis ball diameter by the neuron diameter.

\frac{0.04}{5\times10^{-6}}

We will move the 10^-6 in the numerator to positive 10^6

\frac{0.04\times10^{6}}{5}

= \frac{0.04\times1000000}{5}

= \frac{40000}{5}

= 8000 times.

So, the tennis ball is 8000 times larger than the neuron.

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Find function inverse of f? F(x)=x+2/7
nignag [31]

Answer:

f’(x) = x -2/7

Step-by-step explanation:

Let f(x)= y

Thus;

y = x + 2/7

x = y-2/7

So the inverse f’(x) = x - 2/7

6 0
3 years ago
Find the value of a/b when a = 2/3 and b= 7/9
Usimov [2.4K]

Answer:

6/7

Step-by-step explanation:

2/3X9/7

simplify 9 by 3

which equals:

2/1X3/7

=6/7

7 0
3 years ago
Given that a 90% confidence interval for the mean height of all adult males in Idaho measured in inches was [62.532, 76.478]. Us
grigory [225]

Answer:

The confidence interval on this case is given by:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}} (1)

For this case the confidence interval is given by (62.532, 76.478)[/tex]

And we can calculate the mean with this:

\bar X = \frac{62.532+76.478}{2}= 69.505

So then the mean for this case is 69.505

Step-by-step explanation:

Previous concepts

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

\bar X represent the sample mean  

\mu population mean (variable of interest)  

\sigma represent the population standard deviation  

n represent the sample size  

Assuming the X follows a normal distribution  

X \sim N(\mu, \sigma)

The confidence interval on this case is given by:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}} (1)

For this case the confidence interval is given by (62.532, 76.478)[/tex]

And we can calculate the mean with this:

\bar X = \frac{62.532+76.478}{2}= 69.505

So then the mean for this case is 69.505

5 0
3 years ago
Increase £139 by 28%<br> Give your answer rounded to 2 DP
Elis [28]

Answer:

£177.92

Step-by-step explanation:

To increase something by 28% would be to multiply the original value by 1.28:

So to increase £139 by 28%, we do:

£139 × 1.28 = £177.92

So this is our final answer

4 0
2 years ago
Solve and show work for ( +2 )(2+5)=0
Scorpion4ik [409]
(2) (2+5) = 14
2•2= 4
2•5= 10
4+10= 14
7 0
3 years ago
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