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Lelu [443]
4 years ago
7

Use eulers formula to find the missing number.

Mathematics
1 answer:
Luden [163]4 years ago
8 0
The formula states that:

Faces + Vertices - Edges = 2

So 21 + V - 49 = 2 => V = 2+49-21 = 30

Answer A!
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zloy xaker [14]

Answer:

blue

Step-by-step explanation:

8 0
3 years ago
Evaluate the following rational equations below, and identify which rational equation is transformable to a quadratic equation.
ladessa [460]

Answer:

  • 2m^2 + 14m - 81 = 0

Step-by-step explanation:

<u>It looks like</u>

  • (m + 7)/9 = 18/4m

<u>Cross-multiplication:</u>

  • 4m(m+7) = 9*18
  • 2m(m+7) = 9*9
  • 2m^2 + 14m = 81
  • 2m^2 + 14m - 81 = 0

Here is the quadratic equation

7 0
3 years ago
An aircraft seam requires 24 rivets. The seam will have to be reworked if any of these rivets are defective. Suppose rivets are
kirill [66]

Answer:

Step-by-step explanation:

a)

p(d) - probability of a rivet being defective

p(r) - probability of seam needing to be reworked

The probability of the seem needing to be reworked is equal to the probability that ANY of 24 rivets is defective

Thus the probability that none of the 25 rivets is defective is 1-p(r)

p(r) = 16%, thus 1-p(r) = 84%

1-p(r) = (1-p(d))^24

0.84 = (1-p(d))^24

0.84^(1/24) = 1-p(d)

==> 1-p(d) = 0.9927615998

==> p(d) = 1-0.9927

==> p(d) = 0.0073

b) given p(r) = 8%, thus 1-p(r) = 92%

1-p(r) = (1-p(d))^24

0.92 = (1-p(d))^24

0.92^(1/24) = 1-p(d)

==> 1-p(d) = 0.99653179446

==> p(d) = 1-0.9965

==> p(d) = 0.0035

5 0
3 years ago
Can someone please help me find this answer.
Stels [109]

Answer:

-2x+4

Step-by-step explanation:

multiply all the components of the bracket by - 1.

then you arrive at the answer above

8 0
3 years ago
Solve for?<br><br> ^^ How would I be able to find the other number that is missing?
Ede4ka [16]

Answer:

66° by adding up 75° and 39°, we get 114°.

since all triangles equal 180°, 180° minus 114° is 66°

6 0
2 years ago
Read 2 more answers
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