7m 3m 4m 5m find the surface area

1) Calcula la diagonales de un poligono n lados. Heptágono: 2 puntos

ahrayia [7]

Answer:

El número de diagonales de un polígono de n lados se calcula mediante la siguiente fórmula:

$d = \frac{n\cdot (n-3)}{2}$ (1)

Donde:

$d$ - Cantidad de diagonales del polígono.

$n$ - Cantidad de lados del polígono.

Bajo esta fórmula, tenemos los siguientes resultados:

a) El heptágono tiene 14 diagonales.

b) El octágono tiene 20 diagonales.

c) El eneágono tiene 27 diagonales.

d) El decágono tiene 35 diagonales.

e) El pentadecágono tiene 90 diagonales.

Explanation:

La cantidad de diagonales de un polígono se puede determinar mediante la siguiente ecuación:

$d = \frac{n\cdot (n-3)}{2}$ (1)

Donde:

$d$ - Cantidad de diagonales del polígono.

$n$ - Cantidad de lados del polígono.

A continuación, calculamos la cantidad de diagonales de los siguientes polígonos:

Heptágono ( $n = 7$ )

$d = \frac{7\cdot (7-3)}{2}$

$d = 14$

El heptágono tiene 14 diagonales.

Octágono ( $n = 8$ )

$d = \frac{8\cdot (8-3)}{2}$

$d = 20$

El octágono tiene 20 diagonales.

Eneágono ( $n = 9$ )

$d = \frac{9\cdot (9-3)}{2}$

$d = 27$

El eneágono tiene 27 diagonales.

Decágono ( $n = 10$ )

$d = \frac{10\cdot (10-3)}{2}$

$d = 35$

El decágono tiene 35 diagonales.

Pentadecágono ( $n = 15$ )

$d = \frac{15\cdot (15-3)}{2}$

$d = 90$

El pentadecágono tiene 90 diagonales.

8 0

3 years ago

ASAP PLEASE!!!!

prisoha [69]

Answer:

what were the answers?

Explanation:

4 0

3 years ago

What is the central idea of the article Elephants Attack as Humans Turn Up the Pressure?

docker41 [41]

Answer: c) Researchers think that stresses created by humans are the reason behind increasing numbers of elephant attacks.

Explanation:

The aforementioned article by National Geographic shows that the higher number of elephant attacks on humans are as a result of human activities that are placing stress on elephants.

Humans are increasing in population and as a result need more land for farming. This is resulting in a shrinking habitat for elephants who then encroach on human farms and are killed for it which leads to some elephants having Post Traumatic Stress Disorder and killing other humans which then continues the cycle.

6 0

3 years ago

Which of the follow is one of the six approaches to changing undesirable behavior in toddlers?

Taya2010 [7]

One of the six (6) approaches to changing an undesirable behavior in toddlers is: d. all of the above.

<h3>What is behavior modification?</h3>

Behavior modification is a therapeutic process that changes any undesirable behavior in an individual, especially through the use of positive or negative consequence and biofeedback.

In Psychology, the six (6) approaches to changing an undesirable behavior in toddlers are:

Teach them socially acceptable behaviors.
Ignore the behavior you want toddlers to change.
Restructure the situation.
Pay keen attention to a behavior that is socially acceptable.
Prevent any harmful behavior from happening.
Redirect this energy when necessary and appropriate.

Read more on behaviors here: brainly.com/question/15600167

#SPJ1

8 0

2 years ago

English language learners” describes children learning English as a second language.

eduard

False I believe is right.

8 0

4 years ago

Read 2 more answers