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statuscvo [17]
3 years ago
6

CHARITY Emily is giving away part of her international doll collection to charity. She has 20 dolls, each from a different count

ry. a) If she selects 10 of them at random, how many different ways can he do this? b) What is the probability she chooses the ones from Ecuador, Paraguay, Chile, France, Spain, Sweden, Switzerland, Germany, Greece, and Italy?
Mathematics
1 answer:
Whitepunk [10]3 years ago
5 0

Answer:

que??

Step-by-step explanation:

spania spania

1111

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Use substitution to solve each of the following pairs of simultaneous equations for x and y in terms of m and n.
mixer [17]

Answer:

Step-by-step explanation:

a)

As given y=mx lets replace mx with y in the first equation

2y=n => y=n/2, replace y with n/2 => mx=n/2, thus x=n/2m

b)

As given y=nx lets replace y with nx in the first equation

x+n^2x=m => x(n^2+1)=m = > x=m/(n^2+1), thus y= n*m/(n^2+1)

c) Replace y with nx => mx-nx=n => x(m-n)=n = > x=n/(m-n), thus y=n^2/(m-n)

8 0
3 years ago
A theater company with 9 actors is putting on a play that has 3 roles. In how many different ways can the director assign actors
Cerrena [4.2K]
He has 9 choices for the first role, and that leaves him 8 people to choose for the second so he has 9*8 = 72 choices for the first two roles; that leaves 7 possible choices for the third role so that gives him 9*8*7 choices or 504 different ways he can assign the roles. i think this is correct. 







5 0
3 years ago
Read 2 more answers
Is this right can someone explain how to do this???
Alex17521 [72]
Do 4x-10 +5x-22+3x+2=180 to find what x equals
4 0
3 years ago
What is the answer to X+4x=-2 and show your work
Setler79 [48]
I think you meant 'x + 4x = -2'

Combine like terms:

5x = -2

Divide 5 to both sides:

x = -2/5 or -0.4
8 0
4 years ago
Read 2 more answers
Give three numbers whose product is 9000
Klio2033 [76]
<span>Product means, the answer of numbers being multiplied with each other.
In the given situation, we need to find three numbers that will be multiplied with each other to get a product which is 9000.</span> <span>Now, let’s find the possible numbers to be multiplied:
=> 300 X 30 X 1
=> 9000 x 1
=> 9000

Or this one also applies:
=> 4500 x 2 x 1
=> 9000 x 1
=> 9000</span> There are a lot of ways to get a product of 9000 by multiplying 3 digits.



3 0
3 years ago
Read 2 more answers
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