12.

1 answer:

6 0

Are those supposed to be comas or decimal points , if they’re comas then i think the scientific notation would be 1.222 x 10^8

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A company hired 15 new employees. They want to randomly assign 4 of them to work in the graveyard shift. In how many ways can th

____ [38]

Answer:

This assignment can be made in 1365 ways.

Step-by-step explanation:

The order in which the shifts are assigned is not important. For example, employees A, B, C, D and D,C,B,A being assigned is the same thing. 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:

Assignment of 4 employees, from a set of 15. So

$C_{15,4} = \frac{15!}{4!(15-4)!} = 1365$

5 0

3 years ago

The sum of two numbers is 72. The difference of the two numbers is 40. What are the two numbers.

Oxana [17]

Step-by-step explanation:

x + y = 72

x - y = 40

x = y + 40

so, the first equation is then

y + 40 + y = 72

2y + 40 = 72

2y = 32

y = 16

x = y + 40 = 16 + 40 = 56

7 0

1 year ago

Use complete sentences to explain how you could use a number line to explain why 2 < 3 < 5. Please. :D

Svetach [21]

Two is less than three which is also less than 5.

When put into a number line from 0 to 10, it shows that 2 is closest to 0 while 5 is closest to 10 and three, will be in between 2 and 5. This shows that as you go from 2 to 3, the number increased and, it continues to increase when you go from 3 to 5. This shows that 2 is less than 3 and 3 is less than 5.

7 0

4 years ago

Can you please help me answer this question <br> Negative n=7+6n

Marianna [84]

In the equationn = negative 1

8 0

3 years ago

The Turtle and Achilles compete. They start at the same time from the same place. Achilles runs at a speed of 13 mph while the T

grandymaker [24]

Answer:

2 minutes.

Step-by-step explanation:

Let t be the time taken in competition and the distance covered by Achilles be x miles.

We have been given that when Achilles reaches the finish line, the Turtle is 2/5 of a mile behind him. This means that distance covered by turtle will be: $x-\frac{2}{5}$ .