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2 years ago

Pls helpp

Mathematics

1 answer:

irina1246 [14]2 years ago

7 0

you will need 2 busses to only transport the boys.
Mark is at (1 + 5/6) miles of his house.

<h3>How many buses would it take to carry only the boys?</h3>

We know that there are (3 + 1/2) groups, such that each group fill one bus.

2/5 of the students are boys, then the number of groups that we can make only with boys is:

(2/5)*(3 + 1/2) = 6/5 + 1/5 = 7/5 = 5/5 + 2/5 = 1 + 2/5

Then you can make one and a little less than a half of a group, which means that you need 1 and 2/5 of a buss to transport the boys, rounding that to the a whole number, you will need 2 busses to only transport the boys.

<h3>How far is Mark from his house?</h3>

The original distance is:

D = (2 + 3/4) miles.

But Mark only covers 2/3 of that distance, then we have:

d = (2/3)*D = (2/3)*(2 + 3/4) miles = (4/3 + 2/4) miles

d = (4/3 + 1/2) miles = (8/6 + 3/6) miles = (1 + 5/6) miles

Mark is at (1 + 5/6) miles of his house.

If you want to learn more about mixed numbers:

brainly.com/question/21610929

#SPJ1

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$E(x) = \frac{116}{52}$

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In (a), we have:

$E(x) = 2.23$

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$E(nx) = n * E(x)$

So, we have:

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$E(755x) = 1683.65$

Hence, the expected value when the game is played 755 times is $1683.65

Read more about expected values at:

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