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Mashutka [201]
3 years ago
15

Solve the equation using square roots: 2x²-17 = 15

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
3 0

2x² - 17 = 15

2x² = 15 + 17

2x² = 32

x² = 32/2

x² = 16

x = ±√16

x' = 4

x'' = -4

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tyler has a rectangular garden measuring 12m by 20 m that he wants to split diagonally from corner to corner using a fence. how
adelina 88 [10]

Answer:

23.3

(or 4\sqrt{34} (let me know if you wanted this one and is you want it explained) lol)

Step-by-step explanation:

To find the length of the fence, use the Pythagorean theorem because, if you cut a rectangle diagonally, you will create two right triangles, and this formula only works with right triangles:

a^{2} +b^{2} =c^{2}

Insert values:

12^{2} +20^{2} =c^{2}

Solve for c:

Evaluate exponents

144+400=c^2

Simplify addition

544=c^2

Find the square root of both

\sqrt{544} =\sqrt{c^2}\\\\\sqrt{544} =c\\\\23.324=c\\\\c=23.3

The fence needs to be approximately 23.3 m.

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8friends→6cups
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3 years ago
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artcher [175]

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For left side

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