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3 years ago

15

In a group of 20 students there are 12 boys and 8 girls 4 of the boys play on foot ball team what is the probability of choosing

1 student at random from the group who is not on football team

1 answer:

Tems11 [23]3 years ago

3 0

Answer:

There is a 1 in 5 chance. (1/5)

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What number completes this sentence12/18=x/30

BartSMP [9]

Cross multiplying:-
18*x = 12*30
x = 360 / 18

x = 20 answer

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A coordinator will select 6 songs from a list of 9 songs to compose an event's musical entertainment lineup. How many different

g100num [7]

Answer:

84 different lineups are possible

Step-by-step explanation:

The order in which the songs are chosen is not important. So we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

6 musics from a set of 9. So

$C_{9,6} = \frac{9!}{6!(9-6)!} = 84$

84 different lineups are possible

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A headache medicine has a flush rate of 25% after 24hrs since a patient took it. James was prescribed a 35mg dose of the medicin

Bess [88]

James will need 115.08mg of medicine at the start of day 6.

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3 years ago

What is the least possible value of 8x-13 when 9 is less than or equal to 3/4 + x?

Kruka [31]

The least possible value of 8x - 13 when 9 is less than or equal to 3/4 + x is;

53.

According to the question;

9<=3/4 + x.

Therefore,

9 -3/4 <= x

8 1/4 <= x

Therefore, x >= 33/4.

The least possible value of x is therefore, 33/4

The expression 8x -3 becomes;

8(33/4) -13

=66 - 13

= 53.

Therefore, the least possible value of 8x - 13 is;

53.

Read more;

brainly.com/question/18370359

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