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3 years ago

7.8 billion minus what number to get 500 million?

Mathematics

2 answers:

umka2103 [35]3 years ago

8 0

Answer:

7,300,000,000

Step-by-step explanation:

7,800,000,000-500,000,000

Maslowich3 years ago

7 0

Answer:

seven billion three hundred million (7.5B)

(7,500,000,000)

Step-by-step explanation:

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V. Money Magazine reported that the average price of gasoline in the United States during the first quarter of 2008 was $3.46. A

Butoxors [25]

Answer:

$z=\frac{3.43 -3.46}{\frac{0.15}{\sqrt{30}}} = -1.095$

$z=\frac{3.49 -3.46}{\frac{0.15}{\sqrt{30}}} = 1.095$

And we can find this probability using the normal standard table and we got:

$P(-1.095$

Step-by-step explanation:

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

$X \sim N(3.46,0.15)$

Where $\mu=3.46$ and $\sigma=0.15$

And for this case we want to find the following probability:

$P(3.43 \leq \bar X \leq 3.49)$

And we can use the z score formula given by:

$z=\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

If we find the z score for the limits we got:

$z=\frac{3.43 -3.46}{\frac{0.15}{\sqrt{30}}} = -1.095$

$z=\frac{3.49 -3.46}{\frac{0.15}{\sqrt{30}}} = 1.095$

And we can find this probability using the normal standard table and we got:

$P(-1.095$

8 0

4 years ago

The formula for the

pogonyaev

It represents the areas of two circles enclosing the cylinder.

Hope this helps.

8 0

3 years ago

Decrease £16870 by 3% Give your answer rounded to 2 DP.

Liono4ka [1.6K]

Just do 16870 x .03 (3% as a decimal) and you'll get 506.10. Subtract that to 16870 and you'll get 16363.90.

4 0

4 years ago

Read 2 more answers

What is square root of 27

ANEK [815]

5.196 is the square
root of 27

7 0

3 years ago

Read 2 more answers

Steve has three quarters, three nickels and three pennies. If Steve selects three coins at random and without replacement, what

BaLLatris [955]

0.1071428571428571 is the probability that the total value is exactly 35 cents.

What is probability ?

Probability is a measure of the likelihood of an event to occur. Many events cannot be predicted with total certainty.
We can predict only the chance of an event to occur i.e. how likely they are to happen, using it.

The only way you can get 35 cents is with 1 quarter and 2 nickels (talk about funny money)

There are 3 ways to pick up a quarter 3C1

and there are 3 ways you can pick up 2 nickels 3C2

So there are 3*3=9 ways to choose 1 quarters and 2 nickels. That is 9 favourable outcomes :)

Now, there are 9C3=84 ways to choose 3 coins from 9 SO

The probability of picking up 35c is

$\frac{9}{84} = \frac{3}{28} = 0.1071428571428571$

Learn more about probability

brainly.com/question/1327345

#SPJ4

The complete question is -

Steve has three quarters, three nickels and three pennies. If Steve selects three coins at random and without replacement, what is the probability that the total value is exactly 35 cents?

8 0

2 years ago