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Butoxors [25]
4 years ago
8

A polyhedron has 6 vertices and 9 edges. How many faces does it have?

Mathematics
1 answer:
sladkih [1.3K]4 years ago
4 0
From Euler equation
Vertices - Edges + Faces = 2
1.  F = E - V + 2
F = 9 - 6 + 2 = 5
answer is <span>B
</span>
<span>2. V = E - F + 2
V = 36 - 25 + 2 = 13
Answer<span> is c</span>
</span>
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The length, in millimeters of each side of a square shaped electronic chip is a rational number. What statement is true about th
AVprozaik [17]

Answer:

The diagonal is irrational because it is a product of a rational and an irrational number

Step-by-step explanation:

The options are not given. However, the question is still answerable.

Given

Shape: Square

Length: Rational

Since the side length is said to be rational, I'll answer the question based on whether the diagonal is rational or not.

Having said that:

The diagonal (d) of a square with side length (l) is calculated using Pythagoras theorem.

d^2 = l^2 + l^2

d^2 = 2l^2

Take positive square root of both sides

d = \sqrt{2l^2}

Split:

d = \sqrt{2} * \sqrt{l^2}

d = \sqrt{2} *l

Recall that the side length (l) is rational.

However, \sqrt 2 is irrational.

So, the product of l and \sqrt 2 will be irrational

Hence:

The diagonal is irrational

8 0
3 years ago
Please help me
beks73 [17]
The answer is B
because 
10*60=600 s
5*60=300s
2*60=120s
you have a total 1020 s
7 0
4 years ago
help please!! i really don’t understand how to do this and i just need an answer so i can get this class over with ;;
tigry1 [53]

Answer:

1/8

Step-by-step explanation:

(6(3)⁻¹(1))⁻³             n⁰=1

(6/3)⁻³

(2)⁻³

1/(2)³

1/8

Hope it helps

5 0
3 years ago
On a number line, M is at 0 and N is at 9. What is the coordinate of P, which is 2/3 of the way from M to N
kari74 [83]

The number line M-N is from 0 - 9.

2/3 of the way will be the same as 9 x 2/3

That equals 18/3 which reduces to 6.

6 is the coord 2/3 across the numberline from 0 to 9.

6 0
4 years ago
The sum of four consecutive integers is 134. Find the integers. (please show your work)
lidiya [134]

Answer:

Integers: 32,33,34,35

Step-by-step explanation:

Consecutive means back-to-back, with a difference of 1

Therefore this can be represented with the following equation (where x is the first number), and we can set this equal to the sum

x+(x+1)+(x+2)+(x+3)=134\\4x+6=134\\4x=128\\x=32

Therefore since x = 32, all four integers are:

32,33,34,35

If we check this, we can see that their sum equals to 134

32+33+34+35 = 134

Hope this helps!

8 0
3 years ago
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