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3 years ago

This is the countiue question to the last one I posted. so please help

Mathematics

2 answers:

Stolb23 [73]3 years ago

6 0

Answer:

4.5

Step-by-step explanation:

Vedmedyk [2.9K]3 years ago

3 0

Answer:

4.5 i think

Step-by-step explanation:

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The computers of six faculty members in a certain department are to be replaced. Two of the faculty members have selected laptop

Anettt [7]

Answer:

a. $\frac{1}{15}$

b. $\frac{2}{5}$

c. $\frac{14}{15}$

d. $\frac{8}{15}$

Step-by-step explanation:

Given that there are two laptop machines and four desktop machines.

On a day, 2 computers to be set up.

To find:

a. probability that both selected setups are for laptop computers?

b. probability that both selected setups are desktop machines?

c. probability that at least one selected setup is for a desktop computer?

d. probability that at least one computer of each type is chosen for setup?

Solution:

Formula for probability of an event E can be observed as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

a. Favorable cases for Both the laptops to be selected = $_2C_2$ = 1

Total number of cases = 15

Required probability is $\frac{1}{15}$ .

b. Favorable cases for both the desktop machines selected = $_4C_2=6$

Total number of cases = 15

Required probability is $\frac{6}{15} = \frac{2}{5}$ .

c. At least one desktop:

Two cases:

1. 1 desktop and 1 laptop:

Favorable cases = $_2C_1\times _4C_1 = 8$

2. Both desktop:

Favorable cases = $_4C_2=6$

Total number of favorable cases = 8 + 6 = 14

Required probability is $\frac{14}{15}$ .

d. 1 desktop and 1 laptop:

Favorable cases = $_2C_1\times _4C_1 = 8$

Total number of cases = 15

Required probability is $\frac{8}{15}$ .

8 0

3 years ago

Find the value of x in the equation 9-4x=57

kirill115 [55]

9-4x=57
-4x = 57 - 9
-4x = 48
x = -12

5 0

3 years ago

Read 2 more answers

Is the relation a function? O Yes O No O Cannot be determined

VMariaS [17]

Answer:

is the relation a function

8 0

2 years ago

Tickets for a game Cost $2 for students and $5 for adults. The number of students was 3 less than 10 times the number of adults.

Elina [12.6K]

Question

Tickets for a game Cost $2 for students and $5 for adults. The number of students was 3 less than 10 times the number of adults. The total amount of money from ticket sales was $619. How many of each tickets were sold?

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Faith Sherlock received her monthly pension check of $1,247.26. From that amount, she transferred $150 to a savings account and

Katyanochek1 [597]

Answer:

$\boxed{\$780.59}$

Step-by-step explanation:

Monthly pension = $1247.26

Savings = $150.00

Electric = 156.33

Gas = 9.38

Water = 98.42

TV = 52.54

Total bills = 466.67

Remaining = $ 780.59

$\text{Faith has }\boxed{\textbf{\$780.59}} \text{ remaining from her pension check}$

4 0

3 years ago

This is the countiue question to the last one I posted. so please help ​

This is the countiue question to the last one I posted. so please help