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
klio [65]
4 years ago
12

A gem cutter cuts a polyhedral crystal from a garnet gemstone. The crystal has 10 fewer vertices than edges and twice as many ed

ges as faces. How many faces, vertices, and edges does the crystal have?
Mathematics
1 answer:
Vikki [24]4 years ago
3 0

Answer:

vertices (V) = 6, faces (F) = 12 and edges (E) = 16

Step-by-step explanation:

A polyhedron is a three-dimensional shape with straight edges and flat faces and sharp corners.The point where the faces of a polyhedron meet each other is known as the edge while the corners of the polyhedron is known as the vertices.

Euler formula gives the relationship between the number of vertices (V), faces (F) and edges (E) of a polyhedron. This formula is given as:

F + V - E = 2.

Given that:

E - V = 10, Therefore E = V + 10

F = 2 × V = 2V

Substituting into the Euler formula:

2V + V - (V + 10) = 2

2V + V - 10 - V = 2

2V = 12

V = 12/2 = 6

Therefore, E = V + 10 = 6 + 10 = 16

F = 2V = 2 × 6 = 12

You might be interested in
A ball is thrown into the air. The height in feet of the ball can be modeled by the equation h = -16t2 + 20t + 6 where t is the
makkiz [27]

f(t)=h=-16t^2+20t+6



a=-16, b=20, c =6

Δ=b^2-4ac=20^2-4*(-16)*6=400+384=784

\sqrt{Δ}=\sqrt{784}=28

max:

p=-\frac{b}{2a}=-\frac{20}{-32}=\frac{20}{32}=\frac{5}{8}

max heigh: h=-16(\frac{5}{8})^2+20*\frac{5}{8}+6=-16\frac{25}{64}+\frac{100}{8}+6

h=-\frac{25}{4}+\frac{50}{4}+6=\frac{-25+50+24}{4}=\frac{49}{4}

h=\frac{49}{4} at t=\frac{5}{8}s


will fall down at t:

t=\frac{-20-28}{-32}=\frac{-48}{-32}=\frac{3}{2}=1.5

t=1.5s

8 0
3 years ago
Write down one pro and one con of employment.
lapo4ka [179]

Answer:

Pro: Monthly income to pay bills, buy food ,etc

Con: You many feel tied down, you could get abused at work (taken advantage of)

8 0
3 years ago
If 12 less than 4 times a number is 8, the number is 5. What difference sentence where the unknown number is also 5?
Gnesinka [82]
Sent a picture of the solution to the problem (s).

8 0
4 years ago
I Need Help With This Its Due In An Hour
AfilCa [17]

Answer:

A. The car travels 65 miles in one hour

B. 97.5 miles

C. 24 Minutes

Step-by-step explanation:

5 0
3 years ago
13. Greg is going into business selling homemade blankets.
Orlov [11]

Answer:

all positive inegers

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • hector has 0.3 batting average(hits/ times at bat) if he gets a total of 10 more hits the next 10 times at bat, his batting aver
    11·1 answer
  • Part 2 of math help me please
    13·1 answer
  • Solve for x <br> What kind of angle <br> Substitute back in
    12·1 answer
  • Can some plz help me if u do I will mark u the brainly
    5·1 answer
  • HELP!! PLEASE!! NEED DONE ASAP I WILL GIVE 100 POINTS AND MORE IF YOU CAN GET ALL 3 QUESTIONS DONE!! THANK YOU!! I WILL ALSO MAR
    12·2 answers
  • PLEASE HELPPP! WILL GIVE BRAINLIEST!
    14·2 answers
  • What is the expanded form of 720.058
    9·2 answers
  • DUE IN 10 MINUTES!!!!!!!!!!!!!!!!!!!!!!!!!!
    13·2 answers
  • I need help on this now. Please.
    12·2 answers
  • What is the next ordered pair in the table?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!