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Kipish [7]
3 years ago
8

The equations of four lines are given. Identify which lines are perpendicular. HELP PLEASE!!

Mathematics
1 answer:
Artemon [7]3 years ago
5 0

None of the lines are perpendicular

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How many diagonals can be constructed from one vertex of an n-gon? State your answer in terms of n and, of course, justify your
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Answer:

The \ total \ number \ of \ distinct \ diagonals \ in \ a \ polygon \ with \ n \ sides= \dfrac{n \times (n - 3)}{2}

Step-by-step explanation:

A diagonal is defined in geometry as a line connecting to two non adjacent  vertices.

Therefore, the minimum number of sides a polygon must have in order to have a diagonal n - 3 sides as the 3 comes from the originating vertex and the other two adjacent vertices

Given that the polygon has n sides, the number of diagonals that can be drawn from each of those n sides gives the total number of diagonals as follows;

Total possible diagonals = n × (n - 3)

However, half of the diagonals drawn within the polygon are the same diagonals drawn in reverse. Therefore, the total number of distinct diagonals that can be drawn in a polygon is given as follows;

The \ total \ number \ of \ distinct \ diagonals \ in \ a \ polygon \ with \ n \ sides= \dfrac{n \times (n - 3)}{2}

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3 years ago
Together, a skateboarder and a bicycle cost $199.00. The skateboard costs $51.00 less than the bicycle. How much does each cost?
WITCHER [35]

Answer:

Bike=125 Skateboard= 74

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x + (x-51)= 199

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A customer buys 12.42 in merchandise and gives the cashier a ten dollar bill, a five dollar bill, a dime, a nickle and two penni
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The change will be $2.75
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Martha rolls two number cubes. What is the probability that both number cubes come up even?
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The answer would be 2 I think
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The word "sum" can  be related to "addition" and "13 and a number" is just "13" and an exponent.

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