3 years ago

For which polygon is the sum of the interior angles equal to 720? A: quadrilateral B: pentagon C: hexagon D: septagon

Mathematics

1 answer:

ICE Princess25 [194]3 years ago

8 0

Answer:

C. Hexagons

Step-by-step explanation:

It has a 720 degrees.

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IgorLugansk [536]

Answer: 0.99

Step-by-step explanation:

SOH CAH TOA

CAH: cosine = adjacent/hypotenuse

Cosine of angle w = 84/85 = 0.98823 ≈ 0.99

Angle Y is 90 degrees, meaning it's a right triangle. Therefore angle W is the top/tip of a triangle, while X is the angle next to Y. If you plug in the information afterwards and follow the trigonometry rule (SOH CAH TOA) you will find your answer.

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Phoenix [80]

Answer:

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Step-by-step explanation:

The blue line represent the full line length.

We can add the parted black segments together and set it equal to the line.

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$x = 2$

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2 years ago

ida buys a computer system for 1,299.99, Word-processing software for 634.87, and a conversation program for $75.65. What is the

Evgen [1.6K]

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2 years ago

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2 years ago

Write an equation of the line that is perpendicular to the line y =

inn [45]

Answer:

Step-by-step explanation:

$\text{Let}\\\\k:y=m_1x+b_1\\\\l:y=m_2x+b_2\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\l\ \parallel\ k\iff m_1=m_2\\\\===============================$

$\text{We have the equation}\ y=\dfrac{1}{3}x+6\to m_1=\dfrac{1}{3}.\\\\\text{Therefore}\ m_2=-\dfrac{1}{\frac{1}{3}}=-3.\\\\\text{We have the equation}\ y=-3x+b.\\\\\text{Put the coordinates of the point}\ (2,\ -3):\\\\-3=-3(2)+b\\-3=-6+b\qquad\text{add 6 to both sides}\\3=b\to b=3\\\\\text{Finally:}\\\\y=-3x+3$

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2 years ago