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Nonamiya [84]
3 years ago
10

Use Euler’s formula to find the number of vertices in a polyhedron with 6 square faces and 12 edges

Mathematics
1 answer:
Sloan [31]3 years ago
3 0

Answer:

V = 8

Step-by-step explanation:

we know that

The Euler's formula state that: In a polyhedron, the number of vertices, minus the number of edges, plus the number of faces, is equal to two

V - E + F = 2

in this problem  we have

V=?\\E=12\\F=6

substitute the given values

V - 12 + 6 = 2

solve for V

Combine like terms left side

V - 6 = 2

Adds 6 both sides

V - 6+6 = 2+6

V = 8

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Find the area of the regular polygon. Give the answer to the nearest tenth.
gavmur [86]

Answer:

\displaystyle 93,5\:in.^2 \approx A

Step-by-step explanation:

\displaystyle \frac{3\sqrt{3}}{2}a^2 = A \hookrightarrow \frac{3\sqrt{3}}{2}6^2 = A \\ \frac{3\sqrt{3}}{2}[36] = A; 54\sqrt{3}\:[or\:93,530743609...] \\ \\ \boxed{93,5 \approx A}

I am joyous to assist you at any time.

5 0
3 years ago
What is the value of h?<br><br> h = 20<br> h = 35<br> h = 55<br> h = 70
Yuri [45]

Answer:55

Step-by-step explanation:

8 0
3 years ago
Solve for the variable in 7/28=25/x
Ivan
X= 100 would be the answer
8 0
3 years ago
Corey has a piece of fabric that is 1/4 yard long. He cuts the length into 2 equal pieces. Write an expression for the length, i
MrRissso [65]

Answer:The length of each piece of fabric is 1/8 yards.

Step-by-step explanation:

Corey has a piece of fabric that is 1/4 yard long. He cuts the length into 2 equal pieces. This means that he cut 1/4 yards of fabric into two equal pieces.

An expression for the length, in yards, of each piece of fabric will be

Let the length of the fabric be x in yards. Also, let the length of each piece of fabric be y in yards. It becomes

y = x/2

Since x = 1/4

y =( 1/4)/ 2 = 1/4 × 1/2

y = 1/8

The length of each piece of fabric is 1/8 yards.

4 0
3 years ago
Based on a survey of U.S. residents completed in 2014, ___________ percent of respondents agreed that global warming is occurrin
Daniel [21]

Using the percentage concept, supposing 520 out of 1000 respondents believe in global warming, 52% of respondents agreed that global warming is occurring.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

P = \frac{a}{b} \times 100\%

In this problem, we suppose that 520 out of 1000 respondents believe in global warming, hence a = 520, b = 1000, and the percentage is of:

P = \frac{520}{1000} \times 100\% = 52\%

More can be learned about the percentage concept at brainly.com/question/10491646

3 0
2 years ago
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