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3 years ago

Please help!

Mathematics

1 answer:

KatRina [158]3 years ago

6 0

Answer:

Eulers formula of course is: F+ V - E = 2, (F)aces + (V)ertices - Number of (E)dges = 2. Which he derived from solving the Koningberg Bridge problem.

I dont know if this will be of help: pentagonal prism https://en.wikipedia.org/wiki/Pentagonal_prism. it seems to fit what you are looking for!

Step-by-step explanation:

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Please slove step by step for both

Serggg [28]

Answer:

Step-by-step explanation:

8. 21+7 = 28

9. 73-17 =56

3 0

3 years ago

Read 2 more answers

A fair coin is flipped seven times. what is the probability of the coin landing tails up at least two times?

GaryK [48]

The required probability of the coin landing tails up at least two times is 15/16.

Given that,
A fair coin is flipped seven times. what is the probability of the coin landing tails up at least two times is to be determined.

<h3>What is probability?</h3>

Probability can be defined as the ratio of favorable outcomes to the total number of events.

Here,
In the given question,
let's approach inverse operation,
The probability of all tails = 1 / 2^7 because there is only one way to flip these coins and get no heads.
The probability of getting 1 head = 7 /2^7
Adding both the probability = 8 / 2^7
Probability of the coin landing tails up at least two times = 1 - 8/2^7
= 1 - 8 / 128
= 120 / 128
= 15 / 16

Thus, the required probability of the coin landing tails up at least two times is 15/16.

Learn more about probability here:

brainly.com/question/14290572

#SPJ2

7 0

1 year ago

Where is the blue dot on the number line?

earnstyle [38]

<em>Answer:</em>

–6.8

<em>Method:</em>

Counting backwards from –7 to –6.5

5 0

2 years ago

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Selena drove at an average speed of 50.55 miles per hour for 1.75 hours. She stopped at a rest stop and then drove at an average

frez [133]

50.55 x 1.75 = 88
45.2 x 2.25 = 94

Selena drove more miles after (how many) 6

I hope this helped :)

3 0

3 years ago

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A lab technician made a 14 cm diameter hole through the middle of a cylinder that has a diameter of 20 cm and a height of 28 cm.

Step2247 [10]

Answer:

The volume of the finished cylinder is $4486.2 m^3$

Step-by-step explanation:

To find the volume of the finished cylinder, we have to first find the volume of the hole (with 14 cm diameter and a height of 28 cm) and subtract it from the volume of the original cylinder (with diameter of 20 cm and a height of 28 cm).

Note: The hole is also cylindrical in shape.

The volume of a cylinder is given as:

$V = \pi r^2h$