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Aneli [31]
3 years ago
9

:

Mathematics
1 answer:
Degger [83]3 years ago
3 0

Let x = pounds of $12 per pound coffee

then

20-x = pounds of $9 per pound coffee

.

12x + 9(20-x) = 10(20)

12x + 180 - 9x = 200

3x + 180 = 200

3x = 20

x = 20/3

x = 6 and 2/3 pounds of $12 per pound coffee

.

Amount of $9 per pound coffee:

20-x = 20-20/3 = 60/3 - 20/3 = 40/3

or

13 and 1/3 pounds of $9 per pound coffee

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I have 345 students and I need to fit them all into chairs. However, there are some requirements my seating plan has to keep to:
sveta [45]

In each row, the 15 number of the student is arranged. For the given condition, the equal number of the student is to be arranged.

<h3>What is seating arrangement?</h3>

A seating arrangement is an arrangement shows that how the peoples are arranged so that the complete utilization is done.

The given data in the problem is;

The total no of student is 345 students

If the same number of the students are to be arranged for the given row, the following calculation is done;

The numbers of the student in each row is found as;

\rm  n= \frac{Total \ no \ of \ student\ }{Total\ no \of \ rows } \\\\\ n= \frac{345}{23} \\\\ n= 15 \ student

Hence, in each row, the 15 no of the student is arranged.

To learn more about the seating arrangement, refer to the link;

brainly.com/question/13492666

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3 0
2 years ago
According to a recent​ survey, the probability that the driver in a fatal vehicle accident is female​ (event F) is 0.2805. The p
Aleks [24]

Question d:

(D) Find the probability of F'nA'

Answer:

0.4140

0.7619

0.2381

0.9576

Step-by-step explanation:

Given that :

Female in fatal accident P(F) = 0.2805

Driver is 24 years or less P(A) = 0.1759

Driver is female and 24 years or less P(FnA) = 0.0424

A.) Find the probability of FUA.

P(FUA) = P(F) + P(A) - P(FnA)

= 0.2805 + 0.1759 - 0.0424

= 0.4140

(b) Find the probability of F'UA.

P(F'UA) = 1 - P(F) + P(FnA)

= 1 - 0.2805 + 0.0424

= 0.7619

C.) P(FnA') = 1 - P(F'UA)

= 1 - 0.7619

= 0.2381

(d) Find the probability of F'nA'

P(F'nA') = (FnA)' = 1 - (FnA)

= 1 - 0.0424

= 0.9576

4 0
3 years ago
A farmer is planting a straight row of crops with 3 feet between each plant. If 23 are planted, what is the distance between the
densk [106]
Number of plants planted = 23
with a distance of = 3 m
total distance between the first and the last plant = 22x3 ( because starting from first plant we will not take 23)
ans. = 66m 
5 0
3 years ago
8/9 + (−5/ 6) divided by 1/6
rusak2 [61]

Answer:

-4 1/9

Step-by-step explanation:

5 0
3 years ago
Help plsss<br> It’s due in soooon
djyliett [7]

Answer:

7/12.

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The numbers 1, 7, 11, 8, 2, 4, and 10 are not in Set Q.

There are seven of those numbers which means that the probability of a number not being in Set Q is 7/12.

4 0
2 years ago
Read 2 more answers
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