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3 years ago

There are 801 students in the

Mathematics

2 answers:

Eddi Din [679]3 years ago

5 0

It is real sly hard but I am sorry I can I think it is boys

DiKsa [7]3 years ago

3 0

Answer:

89 more boys than girls

Step-by-step explanation:

801 * 4/9 = 356

So 356 boys

rest are girls so 801-356 = 445 girls

445-356 = 89

89 more boys than girls (there are more boys but question says there are more girls?)

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Need a quick answer please

Over [174]

Answer:

Step-by-step explanation:

6x-15+3x+6=90

Simplify: 9x-9=90

9x=99

x=11

3(11)+6

33+6

<H= 39

5 0

3 years ago

Find the volume. Round to the nearest tenth.<br> 20m<br> 5 m<br> 18 m

Thepotemich [5.8K]

The answer is 1800 because you have to follow the formula for volume which is
Volume=Length x Width x Height
1800= 18m x 5m x 20m

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3 years ago

If L | | m and m<8 = 109°, what is m<5

Karolina [17]

Answer:

m∡5 = 71°

Step-by-step explanation:

m∡8 = m∡6

m∡6 + m∡5 = 180

180 - m∡6 = m∡5

180 - 109 = 71

4 0

2 years ago

Find the value of t write your anwer as a decimal number 2.1 and 2.2

svetlana [45]

Answer:

2.1x2.2= your answeer

Step-by-step explanation:

8 0

3 years ago

A bag contains some number of marbles. It is known that 20 of them are red. When 15 marbles are drawn, without replacement, we g

Llana [10]

Answer:

The total number of marbles in the bag is 50.

Step-by-step explanation:

Here, we have n trials, without replacement. So the hypergeometric distribution is used.

The mean of the hypergeometric distribution is:

$E(X) = \frac{n*k}{N}$

In which n is the number of items in the sample, k is the number of items in the population that are classified a success and N is the size of the population.

15 marbles are drawn:

This means that $n = 15$

A bag contains some number of marbles. It is known that 20 of them are red.

This means that $k = 20$ , since a success is drawing a red marble.

Assuming E(X)=6 red, what is the total number of marbles in the bag?

We have to find N when $E(X) = 6$

$E(X) = \frac{n*k}{N}$

$6 = \frac{15*20}{N}$

$6N = 300$

$N = \frac{300}{6}$

$N = 50$

The total number of marbles in the bag is 50.

8 0

2 years ago