3 years ago

(20 points, please help!) Which name is a correct way to name the tiling?

Mathematics

1 answer:

Naddika [18.5K]3 years ago

7 0

Answer:

Actually ignore what i put.. I counted again and realized there were actually 19..

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Answer:

Obtuse triangle

Step-by-step explanation:

Given are the vertices of a triangle

Let A (-4, 0, 0),B (0, 0, 0),C(7, 2, 6)

Let us find angles between AB, BC and CA

AB = (4, 0,0): BC = (7,2,6) : CA = (11, 2,6)

Cos B = $\frac{AB.BC}{|AB||BC|} \\$

B = arc cos $\frac{AB.BC}{|AB||BC|} \\$ =137 deg 54 min 7 sec

Similarly

A=29 deg 53 min 53 seconds

C = 12 deg 12 min 3 sec

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3 years ago

Q # , 15 combine like terms please

Rudiy27

Hi there!

Combining th' like terms of the expressions.

(7y² - 3y) + (8y² - 8y)

7y² - 3y + 8y² - 8y

(7y² + 8y²) + (-3y - 8y)

15y² - 11y

Hence,
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~ Hope it helps!

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3 years ago

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Step-by-step explanation:

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3 years ago

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bija089 [108]

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