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Alona [7]
3 years ago
10

Tanus weight is 45000g. What is her weight in kg

Mathematics
1 answer:
PIT_PIT [208]3 years ago
7 0

Answer:

45kg

Step-by-step explanation:

45000/1000=45

kilo means thousand so kg means 1000g

1kg=1000g

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22n=418<br><br><br> what is the vaule of n.
AnnZ [28]

Answer:

n = 19

Step-by-step explanation:

22n = 418

Divide both sides by 22.

n = 19

8 0
3 years ago
Find the value of X.!?
Tju [1.3M]

Answer:

x = 50

Step-by-step explanation:

140 = 85 + 1/2 x + 30

140 = 115 + 1/2x

25 = 1/2 x

x = 50

7 0
2 years ago
The Statistical Abstract of the United States published by the U.S. Census Bureau reports that the average annual consumption of
Karo-lina-s [1.5K]

Answer:

a) P(\bar X

b)P(98

c) P(\bar X

d) P(93

Step-by-step explanation:

Previous concepts

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".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Part a

Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:

X \sim N(99.9,30)  

Where \mu=99.9 and \sigma=30

We select a random sample of n=36. And from the central limit theorem we know that the distribution for the sample is given by:

\bar X \sim N(\mu =99.9 , \frac{\sigma}{\sqrt{n}}= \frac{30}{\sqrt{38}}=4.87)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

If we apply this formula to our probability we got this:

P(\bar X

=P(Z

Part b

For this case we want this probability:

P(98

=P(\frac{98-99.9}{\frac{30}{\sqrt{38}}}

And we can find this probability on this way:

P(-0.39

And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.  

P(-0.39

Part c

If we apply this formula to our probability we got this:

P(\bar X

P(\bar X

Part d

For this case we want this probability:

P(93

=P(\frac{93-99.9}{\frac{30}{\sqrt{38}}}

And we can find this probability on this way:

P(-1.42

And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.  

P(-1.42

3 0
3 years ago
What is the opposite of real number
Dafna1 [17]

An <em>imaginary number</em>. The defining property of an imaginary number is that has the number i attached to it, where i² = -1.

A few examples of imaginary numbers: 3i, i, -7i, (√3)i, (1/2)i

7 0
3 years ago
Read 2 more answers
Solve for “z.”<br><br> Please help!
Darya [45]

Answer: Z=5

Step-by-step explanation:

Solve the rational equation by combining expression and isolating the variable z

7 0
3 years ago
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