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18alewis

18alewis

21.08.2020 •

Mathematics

Help me please. I need it

Help me please. I need it

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Ответ:

ladnerhailey16

31.01.2022

Answer/Step-by-step explanation:

Use the distance formula, $d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$ , to solve each problem.

1. Distance between A(0, 0) and B(-5, 7):

(0, 0) = (x_1, y_1)

(-5, 7) = (x_2, y_2)

$AB = \sqrt{(-5 - 0)^2 + (7 - 0)^2} = \sqrt{(-5)^2 + (7)^2} = \sqrt{25 + 49}$

$AB = \sqrt{74}$

2. Distance between A(-3, 1) and B(-11, 1):

(-3, 1) = (x_1, y_1)

(-11, 1) = (x_2, y_2)

$AB = \sqrt{(-11 - (-3))^2 + (1 - 1)^2} = \sqrt{(-8)^2 + (0)^2} = \sqrt{64 + 0}$

$AB = \sqrt{64} = 8$

3. Distance between A(-3, -2) and B(5, 6):

(-3, -2) = (x_1, y_1)

(5, 6) = (x_2, y_2)

$AB = \sqrt{(5 - (-3))^2 + (6 - (-2))^2} = \sqrt{(8)^2 + (8)^2} = \sqrt{64 + 64}$

$AB = \sqrt{128} = \sqrt{64*2}$

$AB = 8\sqrt{2}$

4. Distance between A(-2, -5) and B(-6, 1):

(-2, -5) = (x_1, y_1)

(-6, 1) = (x_2, y_2)

$AB = \sqrt{(-6 - (-2))^2 + (1 - (-5))^2} = \sqrt{(-4)^2 + (6)^2} = \sqrt{16 + 36}$

$AB = \sqrt{52}$

None of the choices are correct

0,0(0 оценок)

Ответ:

majorsam82

22.10.2022

x is the cost of each sock. This equation would only work if all socks cost the same price.

Step-by-step explanation:

4(2x) + 4(-1) = 8x - 4

0,0(0 оценок)

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