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Free_Kalibri [48]
3 years ago
9

If there are four teams in a league, how many games will have to be played so that each team plays every other team once?

Mathematics
1 answer:
Sedaia [141]3 years ago
3 0

Answer:

6 matches

Step-by-step explanation:

Let’s call the teams A B C D

A will play B C D = 3 matches

B will play only C and D as it already played A, making 2 matches

C will play D, making 1 match

D has already played all

Total number of matches is thus 3 + 2 + 1 = 6 matches

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Alicia, Quentin, and Rosalyn are siblings. Alicia is the oldest sibling. Quentin is four years younger than Alicia. Rosalyn is t
tatiyna

Answer:

Alicia is 18years

Quentin is 14years

Rosalyn is 16years

Step-by-step explanation:

Let the age of Alicia be x

Let the age of Quentin be y

Let the age of Rosalyn be z

If the sum of the siblings’ ages, in years, is 48 then;

x+y+z = 48.... 1

If Rosalyn is two years older than Quentin then;

z =y+2 ..... 2

Also if Quentin is four years younger than Alicia then;

y = x-4 ... 3

From 3:

x = y+4 ... 4

Substitute 2 and 4 into 1 to have:

y+4+y+y+2 = 48

3y + 6= 48

3y = 48-6

3y= 42

y = 14

Since x= y+4

x = 14+4

x = 18

Since z = y+2

z = 14+2

z = 16year

This means that;

Alicia is 18years

Quentin is 14years

Rosalyn is 16years

6 0
3 years ago
Whats the answer giving brainliest :))))) lol
n200080 [17]

Answer:

B

Step-by-step explanation:

1+1=2

But 2x has to stay the same

5 0
2 years ago
I need help on this please ​
rjkz [21]

Answer:

maybe rotation.........i think....

7 0
2 years ago
Solve: (a)(9a + 4) = 0.
Monica [59]

Answer:

a = -4/9

Step-by-step explanation:

(9a + 4) = 0

Subtract 4 from each side

9a + 4-4 = 0-4

9a = -4

Divide each side by 9

9a/9 = -4/9

a = -4/9

4 0
2 years ago
Read 2 more answers
4. Write the quadratic equation in standard form.
kicyunya [14]

Answer:

i think it on of these C. y = 2x2 - 6x + 80

D. y = 2x2 + 6x - 80

Step-by-step explanation:

8 0
3 years ago
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