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3 years ago

15

How to solve an expression for x

1 answer:

timofeeve [1]3 years ago

6 0

<span>Clear out any fractions by Multiplying every term by the bottom parts.Add or Subtract the same value from both sides.Divide every term by the same nonzero value.Combine Like Terms.Factoring.<span>Expanding (the opposite of factoring) may also help.

</span></span>

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Mopeds (small motorcycles with an engine capacity below 50 cm3) are very popular in Europe because of their mobility, ease of op

Mashcka [7]

Answer:

a) P(X<50)=0.9827

b) P(X>47)=0.4321

c) P(-1.5<z<1.5)=0.8664

Step-by-step explanation:

We will calculate the probability based on a random sample of one moped out of the population, normally distributed with mean 46.7 and standard deviation 1.75.

a) This means we have to calculate P(x<50).

We will calculate the z-score and then calculate the probability accordign to the standard normal distribution:

$z=\dfrac{X-\mu}{\sigma}=\dfrac{50-46.7}{1.75}=\dfrac{3.7}{1.75}=2.114\\\\\\P(X$

b) We have to calculatee P(x>47).

We will calculate the z-score and then calculate the probability accordign to the standard normal distribution:

$z=\dfrac{X-\mu}{\sigma}=\dfrac{47-46.7}{1.75}=\dfrac{0.3}{1.75}=0.171\\\\\\P(X>47)=P(z>0.171)=0.4321$

c) If the value differs 1.5 standard deviations from the mean value, we have a z-score of z=1.5

$z=\dfrac{(\mu+1.5\sigma)-\mu}{\sigma}=\dfrac{1.5\sigma}{\sigma}=1.5$

So the probability that maximum speed differs from the mean value by at most 1.5 standard deviations is P(-1.5<z<1.5):

$P(-1.5$

3 0

3 years ago

Three pounds of bananas cost $1.77.

bearhunter [10]

Answer:

1.77/3=0.59

Step-by-step explanation:

If 3 lbs of bananas cost $1.77 we find the amount of each lbs of bananas by dividing 1.77 by 3.

from there we get 0.59,

therefore each lbs of bananas costs $0.59

and 10 lbs of bananas cost $5.90

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Answer:legit?

Step-by-step explanation:legit?

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The slope of the line

xxTIMURxx [149]

~5.83

a^2 + b^2 = c^2

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5/7x + 15 - 9/14x - 9

muminat

Answer:

1/14x+6

Step-by-step explanation:

I have already learn that

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