3 years ago

. How many faces does a polyhedron with 20 vertices and 30 edges have?

Mathematics

2 answers:

Alisiya [41]3 years ago

6 0

Answer:

Step-by-step explanation:

Sergio039 [100]3 years ago

4 0

Answer:

Explanation:

Trust!

Hope this helps! :)

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sergiy2304 [10]

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I really need help with this math problem quick!

Tatiana [17]

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3 years ago

15 3/4 is less than -2+x Answers A. Add 15 3/4 to both sides of the inequality B.Subtract 2 from both sides of the inequality C.

DochEvi [55]

Answer:

Step-by-step explanation:

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3 years ago

On Monday at work, David produces $w$ widgets per hour, and works for $t$ hours. Exhausted by this work, on Tuesday, he decides

nasty-shy [4]

Answer:

8 more widgets

Step-by-step explanation:

Monday:

t hours work AT w widgets per hour

So,

total number of widgets = wt

Tuesday:

2 fewer hours than monday, so

hours worked = t - 2

Per hour widget production is 4 more than Monday so:

per hour widget = w + 4

Total number of widgets = $(t-2)(w+4)=wt+4t-2w-8$

Monday he produced more, so amount more is:

$wt-[wt+4t-2w-8]\\wt-wt-4t+2w+8\\-4t+2w+8$

Given, w = 2t, we have:

$-4t+2w+8\\-4t+2(2t)+8\\-4t+4t+8\\=8$

Thus,

8 more widgets were produced

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3 years ago