2 years ago

A triangle has the side lengths of 12 cm, 15 cm, and 20 cm. Classify it as acute, obtuse, or right.

Mathematics

1 answer:

umka21 [38]2 years ago

5 0

Answer:

Obtuse

Step-by-step explanation:

Plugging the numbers into the Pythagorean Theorem (a^2 + b^2 = c ^2)

20^2 = 12^2 + 15^2

400 > 144 + 225

400 > 369

Because of the Converse of the Pythagorean Theorem, which tells us if c is greater than a+b, it is obtuse

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1 year ago

In what quadrant will θ terminate, if sin θ is positive and sec θ is negative?

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Sin x is possitive in two quadrants :

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2 years ago

Solve system using eliminations<br> 2x+4y=22<br> 2x-2y=-8

KATRIN_1 [288]

$2x+4y=22 \\
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2x+4y=22 \\
\underline{-2x+2y=8} \\
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6y=30 \ \ \ |\div 6 \\
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3 years ago

12 out of 15 people in the US like to eat out. if 400 people selected eating out how many people took the survey?

butalik [34]

12/15 = 400/500

500 people took the survey.

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