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Kryger [21]
3 years ago
15

7,5 +-7,5+-7-2+7-2 what is the perimeter

Mathematics
1 answer:
garik1379 [7]3 years ago
7 0

If you add them all up it would be 6.

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Dmitry_Shevchenko [17]

The angle between two vectors is:

CosФ = u - v / Magnitude(u) x magnitude(v)

Magnitude of u = SQRT(7^2 + -2^2) = SQRT(49 +4) = SQRT(53)

Magnitude of v = SQRT(-1^2 +2^2) = SQRT(1 +4) = SQRT(5)

u x v = (7 x -1) + (-2 x 2) = -7 + -4 = -11

cosФ = -11 / sqrt(53) x sqrt(5)

cosФ = -11sqrt265) / 265

Ф =cos^-1(-11sqrt265) / 265)

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It seems to be closer to more points than the other lines.

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13) To finanace her first car, Maria takes out a
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babymother [125]
<h3><u>Explanation</u></h3>
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\frac{2ab +  {a}^{2}  {b}^{2}  - a}{ab}  \\  \begin{cases} a  =  - 1 \\ b = 1 \end{cases}

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<u>\large \boxed{0}</u>

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2 years ago
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Multiply by √6 on the top and bottom to rationalize the denominator.

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