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Diano4ka-milaya [45]
3 years ago
7

In how many ways can 3 Americans, 4 Frenchmen, 4 Danes and 2 Italians be seated in a row so that those of the same nationality s

it together?
Mathematics
2 answers:
kaheart [24]3 years ago
4 0
Answer (13 of the original arrangements are duplicates now, as AAAF F F FDDDDCC, AAF F F FDDDDCCA, ..., CAAAF F F FDDDDC are identical): 900900/13 = 69300.
miskamm [114]3 years ago
3 0

Answer:

165888

Step-by-step explanation:

Given,

Number of americans = 3,

Total way of seating americans in 3 seats = 3 !,

Number of frenchmen = 4,

Total way of seating frenchmen in 4 seats = 4 !,

Number of danes = 4

Total ways of seating danes in 4 seat = 4 !,

Also, number of Italians = 2,

Total ways of seating italians in 2 seats = 2 !,

Hence, the total ways of seating all citizens so that people with same nationality sit together  =  ( 3! × 4! × 4! × 2! ) × 4!

= 6 × 24 × 24 × 2 × 24

= 165888

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julia-pushkina [17]

First, we obtain the gradient (slope) of the first parallel line

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Recall that since both lines are parallel, we have that,

m_1=m_2

Thus

m_2\text{ = 1}

Hence, we can find the equation of the parallel line given that it passes through the points (-4, -3)

Using

\begin{gathered} y\text{ = mx + c} \\ \text{where m = m}_2\text{ = 1} \\ \text{and x = -4 ,  y = -3, we have} \\ -3\text{ = 1(-4) + c} \\ -3\text{ = -4 + c} \\ 4\text{ - 3 = c} \\ c\text{ = 1} \\ \text{Thus, the equation of the line is y = (1)x + 1} \\ y\text{ = x + 1} \end{gathered}

5 0
1 year ago
(-8) - 3y= 25<br><br>if you have time please help, thank you​
Neko [114]

(-8) - 3y= 25

-8-3y= 25

move -8 to the other side

sign changes from -8 to +8

-8+8-3y=25+8

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divide both sides by -3 to get y by itself

and to get +y

-3y/-3= 33/-3

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y= -11

8 0
3 years ago
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In the equation x + y = 8, find the value of x if y = 3<br><br> 3<br> 5<br> 7<br> 11
snow_lady [41]

Answer:

11

Step-by-step explanation:

x+y=8     y=3

x+3=8

-3     -3

x=11

7 0
3 years ago
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A gray crayon is made with 5\text{ mL}5 mL5, space, m, L of black wax for every 6\text{ mL}6 mL6, space, m, L of white wax.
zloy xaker [14]
The correct answers are B and C.

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A does not work; 10 is 5*2 and 24 is 6*4.  These won't be in the same ratio.

B works; 15 is 5*3 and 18 is 6*3.  These have the same ratio.

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3 years ago
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Supposed a Visa card had a credit card number of 4162 0012 3456789a where a is the check number what is the check number? A) 0 B
MrMuchimi

Answer:

Option B) 3

Step-by-step explanation:

we have the number

4162 0012 3456 789a

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step 1

Multiply every even-position digit (when counted from the right) in the number by two. If the result is a two digit number, then add these digits together to make a single digit

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Remember that If the result is a two digit number, then add these digits together to make a single digit

so

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step 2

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