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Maru [420]
3 years ago
13

By rounding to 1 significant figure work out 54×82​

Mathematics
1 answer:
pav-90 [236]3 years ago
5 0

Answer:

4000

Step-by-step explanation:

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What is the number of diagonals that intersect at a given vertex of a hexagon, heptagon, 30-gon and n-gon?
DENIUS [597]

Answer:

i. 9

ii. 14

iii. 405

iv. \frac{n(n-3)}{2}

Step-by-step explanation:

The number of diagonals in a polygon of n sides can be determined by:

\frac{n(n-3)}{2}

where n is the number of its sides.

i. For a hexagon which has 6 sides,

number of diagonals = \frac{6(6-3)}{2}

                                   = \frac{18}{2}

                                   = 9

The number of diagonals in a hexagon is 9.

ii. For a heptagon which has 7 sides,

number of diagonals = \frac{7(7-3)}{2}

                                   = \frac{28}{2}

                                   = 14

The number of diagonals in a heptagon is 14.

iii. For a 30-gon;

number of diagonals = \frac{30(30-3)}{2}

                                          = \frac{810}{2}

                                         = 405

The number of diagonals in a 30-gon is 405.

iv. For a n-gon,

number of diagonals = \frac{n(n-3)}{2}

The number of diagonals in a n-gon is \frac{n(n-3)}{2}

7 0
3 years ago
There is $100 it goes up 10% how much is it
Umnica [9.8K]
Its 110 cuz it goes up 10% if it was 20% it would be 120
5 0
3 years ago
Read 2 more answers
Can the a triangle with the side measurement of 3,4,and 6 inches be formed
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Answer:

hola a la par y me dijo dígame qué hora prefieres que te hace falta un poco pero no me e sentido así

Step-by-step explanation:

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3 0
2 years ago
Parallelograms geometry acellus pls help
Mamont248 [21]

Answer:

x = 60

Step-by-step explanation:

Recall: one of the properties of a parallelogram is that consecutive angles are supplementary. This means they add up to given 180°

2x and x are consecutive angles. Therefore:

2x + x = 180

3x = 180

Divide both sides by 3

3x/3 = 180/3

x = 60

4 0
3 years ago
Unit 3 homework 2 geometry
ioda
Where is the question?
6 0
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