All categories

3 years ago

What’s the least number of faces a polyhedron can have? And why?

Mathematics

1 answer:

Marysya12 [62]3 years ago

6 0

Answer:

The minimum number of faces a polyhedron can have is 4 faces.

Step-by-step explanation:

We know that a polyhedron is a shape surrounded by polygons. We also know that we need at least 3 sides to make a polygon. So, at the minimum a polyhedron can be made by using only triangular faces but in order to make a closed figure we need at least four triangular faces (which is a tetrahedron).

You might be interested in

Suppose taxi fare from Logan Airport to downtown Boston is known to be normally distributed with a standard deviation of $2.50.

Mariulka [41]

Answer:

95% Confidence interval for taxi fare: ($20.5,$24.2)

Step-by-step explanation:

We are given the following data set: for fares:

$22.10, $23.25, $21.35, $24.50, $21.90, $20.75, and $22.65

Formula:

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{156.5}{7} = 22.35$

95% Confidence interval:

$\bar{x} \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$22.35 \pm 1.96(\frac{2.5}{\sqrt{7}} ) = 22.35 \pm 1.85 = (20.5,24.2)$

6 0

3 years ago

14 divided 3/11 +14 x

slamgirl [31]

Answer:

14x+14/33

Step-by-step explanation:

14÷3/11+14x=

5 0

4 years ago

Out of 120 high school boys and 80 high school girls, 45 tried out for track. Of those 45, 12 were girls.

zhannawk [14.2K]

<span>So there are 33 boys who tried out for track. And this is 27.5 % of the total boys. And there 15% of the girls who tried out for the track. And in total 22.5 % of the total population tried out for track</span>

5 0

3 years ago

Find the value of n<br> - 3(n + 1/4) = 17.25

ankoles [38]

N=-6
that the answer to the question

5 0

3 years ago

Help U Will get Brainliest

Brut [27]

Answer:

18. 4/12

Step-by-step explanation

1/6 x 6/3 = 6/18= 1/3

1/3 x 4/4 = 4/12

7 0

3 years ago

Read 2 more answers