1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
-Dominant- [34]
4 years ago
5

What is the Euler’s formula

Mathematics
1 answer:
noname [10]4 years ago
4 0

Step-by-step explanation:

F + V - E = 2 is the Euler's Formula.

Where,

F = Number of Faces

V = Number of Vertices

E = Number of Edges

of any three dimensional object except curved one.

You might be interested in
An ellipse has a vertex at (14, –1). The focus of the ellipse nearest that vertex is located at (8, –1). If the center of the el
zavuch27 [327]
Refer to the diagram shown below.

The right vertex is at (14, -1), and the center is at (-1, -1).
Therefore the semi-major axis is
a = 14 - (-1) = 15

The right focus is at (8, -1).
Therefore
c = 8 - (-1) = 9.

The distance of the directrix from the center is
d = c²/a = 9²/15 = 81/15 = 27/5.

Therefore the equation for the left directrix is
x = -1 - 27/5 = -32/5

Answer: x = -27/5

6 0
4 years ago
Read 2 more answers
The ratio of boys to girls in a class is 2:3. If there are 18 girls in the class, what is the probability of a boy being in the
lukranit [14]

Answer:

0.4

Step-by-step explanation:

If the ratio of boys to girls in a class is 2:3, then

  • there are 2x boys;
  • there are 3x girls.

If there are 18 girls in the class, then

3x=18\\ \\x=6

Thus, there are

  • 2\cdot 6=12 boys;
  • 3\cdot 6=18 girls;
  • 12+18=30 students in total.

The probability of a boy being in the class is

P=\dfrac{12}{30}=\dfrac{2}{5}=0.4

7 0
3 years ago
Using appropriate properties , find 7/5 × 5/12 − 3/12 × 7/5 − 1/15
Mazyrski [523]

Answer:

\frac{1}{6}

Step-by-step explanation:

\frac{7}{5}  \times  \frac{5}{12}  -  \frac{3}{12}  \times  \frac{7}{5}  -  \frac{1}{15}  =  \frac{7}{5} ( \frac{5}{12}   -  \frac{3}{12} ) -  \frac{1}{15}  =  \frac{7}{5}  \times  \frac{1}{6}  -  \frac{1}{15}  =  \frac{7}{30}  -  \frac{2}{30}  =  \frac{5}{30}  =  \frac{1}{6}

8 0
3 years ago
William and his three friends went out for lunch. The bill was $34 and they left a 15% tip. They want to split the bill equally.
slavikrds [6]

Answer:

Each person will pay $9.78

Step-by-step explanation:

Given that:

Amount of bill = $34

Tip = 15%

Amount of tip = \frac{15}{100}*34

Amount of tip = 0.15 * 34

Amount of tip = $5.10

Amount after bill = 34 + 5.10 = $39.10

Number of people = William + three friends = 4

Per person share = \frac{39.10}{4}

Per person share = $9.775

Rounded to two decimal places

Per person share = $9.78

Hence,

Each person will pay $9.78

8 0
3 years ago
Write 3.6 in a word form
Anit [1.1K]
Three and six tenths

Hope I helped!
5 0
4 years ago
Other questions:
  • line segment ab is drawn in the first quadrant.its image,line segment a'b',is formed by reflecting ab over the x-axis.which stat
    15·1 answer
  • What is a decimal equivalent to 17
    5·1 answer
  • What is the value of x?
    12·1 answer
  • A bag contains purple marbles and green marbles 105 in total. the number of purple marbles and 9 less than 5 times the number of
    6·1 answer
  • The population of bacteria in an
    6·1 answer
  • helpppp plsss What shape is created by the rotation around the given axis "a"? Prism Cone Pyramid Sphere
    14·1 answer
  • Solve x − 2y = 6<br> 3x − 6y = 18
    11·1 answer
  • Which equation is equivalent to the given equation?<br><br>x^2 – 10x = 14 ​
    6·1 answer
  • PLZ HELP I'M BEING TIMED
    11·2 answers
  • John drives to work five days a week the month of August round trip between home and his job is 7.56 miles part a: estimate the
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!