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monitta
3 years ago
13

How many ways are there to select 7 countries in the United Nations to serve on a council if 3 is selected from a block of 54, 2

are selected from a block of 69 and 2 are selected from the remaining 66 countries?
Mathematics
1 answer:
MArishka [77]3 years ago
6 0

Answer:

(54C3) + (69C2) + (66C2) = 29295

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A $10 shirt was sold for $16. What was the percent of<br><br> change?
zloy xaker [14]

Answer:

62.5%

Step-by-step explanation:

10x100 divded by 16 =62.5

3 0
2 years ago
T-4t^2+2t^3 what is the degree of the polynomial
11111nata11111 [884]

Answer:

3

Step-by-step explanation:

three

8 0
3 years ago
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एउटा आयताकार चाउरको परिमिति 1004 m भए सो चउरको
frez [133]

Answer:

502m

Step-by-step explanation:

let x and y represent the length and breadth of rectangular meadow respectively.

Given,

Perimeter of the meadow =1004m

or,2(l+b)=1004m

or2(x+y)=1004m

orx+y=1004m/2

or,x+y=502m

i.e sum of length and breadth

5 0
3 years ago
If the mean weight of 4 backfield members on the football team is 221 lb and the mean weight of the 7 other players is 202 lb, w
MatroZZZ [7]

Let x_1, x_2, x_3, x_4, x_5, x_6, x_7, x_8, x_9, x_{10}, x_{11} be the weight of i-th player.

1. If the mean weight of 4 backfield members on the football team is 221 lb, then

\dfrac{x_1+x_2+x_3+x_4}{4}=221\ lb.

2. If the mean weight of the 7 other players is 202 lb, then

\dfrac{x_5+x_6+x_7+x_8+x_9+x_{10}+x_{11}}{7}=202\ lb.

3. From the previous statements you have that

x_1+x_2+x_3+x_4=221\cdot 4=884 \lb,\\ \\x_5+x_6+x_7+x_8+x_9+x_{10}+x_{11}=202\cdot 7=1414\ lb.

Add these two equalities and then divide by 11:

x_1+x_2+x_3+x_4+x_5+x_6+x_7+x_8+x_9+x_{10}+x_{11}=884+1414=2298\ lb,\\ \\\dfrac{x_1+x_2+x_3+x_4+x_5+x_6+x_7+x_8+x_9+x_{10}+x_{11}}{11}=\dfrac{2298}{11}=208\dfrac{10}{11}\ lb.

Answer: the mean weight of the 11-person team is 208\dfrac{10}{11}\ lb.

4 0
2 years ago
Frank’s family is going on vacation. Their trip is a total of 465.8 miles. On Monday they drive 157.4 miles, and on Tuesday they
statuscvo [17]

Answer:

118.8

Step-by-step explanation:

4 0
3 years ago
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