can i get some help on a few problems pleaseeeeee

Question

anonymous · Answer

Use Euler’s Formula to find the missing number.

1. Faces: 23
Vertices: 10
Edges:   ? 
32
30
34
31

2.   Vertices: 14
Edges: 36
Faces:    ? 
24
25
23
27

jim_thompson5910 · Answer

euler's formula is

V - E + F = 2

jim_thompson5910 · Answer

for #1,  we are given

Faces: 23 
Vertices: 10 
Edges: ? 

so

F = 23
V = 10
E = x

jim_thompson5910 · Answer

so this means

V - E + F = 2

23 - 10 + x = 2

now solve for x

anonymous · Answer

I dont get what you did but I got the answer and I got 31 for the first one and 24 for the second ... Im not sure if the first ones correct ??
@jim_thompson5910

jim_thompson5910 · Answer

have you seen the formula V - E + F = 2 before?

anonymous · Answer

yes .

jim_thompson5910 · Answer

oh wait, i messed up on plugging in the variables..lol my bad

V - E + F = 2

10 - x + 23 = 2

there, it's fixed

jim_thompson5910 · Answer

sorry about that

anonymous · Answer

There you go ... I got it lol . Thanks you ! can you help me with some other problems ? but its not on Eulers formula though . @jim_thompson5910

jim_thompson5910 · Answer

sure

anonymous · Answer

Pierre built the model shown in the diagram below for a social studies project. He wants to be able to show the inside of his model, so he sliced the figure as shown. Describe the cross section he created.
 
Hexagon
Pentagon
Pyramid
Rectangle

anonymous · Answer

attachment

jim_thompson5910 · Answer

you got what

anonymous · Answer

Pentagon

anonymous · Answer

? Im really bad at this ...

jim_thompson5910 · Answer

yep, it has 5 sides, so it's a pentagon

anonymous · Answer

Thank you !

jim_thompson5910 · Answer

sure thing