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Snowcat [4.5K]
3 years ago
15

2x + y = 10 2x - y = 6

Mathematics
2 answers:
aniked [119]3 years ago
8 0

Answer:

x = 4 y = 2

Step-by-step explanation:

2x + y = 10

2x4 = 8

8 + 2 = 10

2x - y = 6

2x4 = 8

8 - 2 = 6

snow_lady [41]3 years ago
7 0

Answer:

Step-by-step explanation:

2x + y = 10......(1)

2x - y = 6........(2)

Substracting (2) from (1)

2x - 2x + y - (-y) = 10 - 6

y + y = 4

2y = 4

Dividing through by 2

y = 4/2

y = 2

Substitute y = 2 in (2)

2x -y = 6

2x - 2 = 6

Collecting like terms

2x = 6 + 2

2x = 8

Dividing by 2

x = 8/2

x = 4

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Answer:

independent is miles, dependent is dollars

Step-by-step explanation:

y depends on x

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8 0
4 years ago
Consider the population of four juvenile condors. Their weights in pounds are : 4, 5, 7, 12 (a) Let x be the weight of a juvenil
creativ13 [48]

Answer:

a) 4, 5, 7, 12

b) 7

c) 4.5, 6.5, 8, 6, 8.5, 9.5

d) 7.167              

Step-by-step explanation:

We are given the following in the question:

4, 5, 7, 12

a) unique values for x

4, 5, 7, 12

b) mean of the population

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

\mu =\displaystyle\frac{28}{4} = 7

c) sampling distribution for samples of size 2

Sample size, n = 2

Possible samples of size 2 are (4,5),(4,7),(4,12),(5,7),(5,12),(7,12)

Sample means are:

\bar{x_1} = \dfrac{4+5}{2} = 4.5\\\\\bar{x_2} = \dfrac{4+7}{2} = 6.5\\\\\bar{x_3} = \dfrac{4+12}{2} = 8\\\\\bar{x_4} = \dfrac{5+7}{2} = 6\\\\\bar{x_5} = \dfrac{5+12}{2} = 8.5\\\\\bar{x_6} = \dfrac{7+12}{2} = 9.5

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6 0
3 years ago
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olchik [2.2K]

-1(y-1)

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I hope this helps

-Ayden

6 0
3 years ago
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shutvik [7]

Answer:

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Step-by-step explanation:

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√(6 – -2)² + (-5 – 7)²

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4 0
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Answer:

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