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3 years ago

14

if there are 3 people at a party and each person have to give a handshake to each person at the party how many handshakes does i

t take?

1 answer:

cricket20 [7]3 years ago

8 0

Each person has to give 3 hand shakes.

(1•3)3 = 9
Or
3(3) = 9

Hope this helps

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Find the Surface Area of the cone.

Snezhnost [94]

Answer:

$\sf \huge{\boxed{\sf area = 653.1 cm^2}}$

<u>Explanation</u>:

$\sf \boxed{\sf area \ of \ cone=\pi r^2 +\pi rl }$

<u>Given:</u>

radius: 8 m

slant height: 18 m

<u>using this formula:</u>

$\hookrightarrow \sf \pi r^2 + \pi rl$

$\hookrightarrow \sf (3.14)(8)^2 +(3.14)(8)(18)$

$\hookrightarrow \sf 653.1 cm^2$

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2 years ago

A roulette wheel has the numbers 1 through 36, 0, and 00. A bet on four numbers pays 8 to 1 (that is, if you bet $1 and one of t

Natasha_Volkova [10]

Answer:

Lose $0.05

Step-by-step explanation:

There are 38 possible spots on the roulette wheel (numbers 1 to 36, 0 and 00).

If the player can choose four numbers on single $1 bet, his chances of winning (W) and losing (L) are as follows:

$P(W) = \frac{4}{38} \\P(L) = 1-P(W) = 1-\frac{4}{38} \\P(L) = \frac{34}{38}$

The expected value of the bet is given by the probability of winning multiplied by the payout ($8), minus the probability of losing multiplied by the bet cost ($1)

$EV=\frac{4}{38}*\$8 -\frac{34}{38}*\$1\\EV= -\$0.05$

On each bet, the player is expected to lose 5 cents ($0.05).

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3 years ago

What is 4 over 10 plus 88 over 100

denpristay [2]

Answer:

1.28

Step-by-step explanation:

4/10 + 88/100

so this is unlike denominators so

4 times 10 and 10 times 10 equal to 40/100

so 40/100 + 88/100 equal to 128/100 so we simplify 128÷2 and 100÷2 equal to 64/50 and 64÷2 and 50÷2 equals 32/25 we do long division then it is equal to 1.28

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2 years ago

The monthly worldwide average number of airplane crashes of commercial airlines is 3.5. What is the probabil- ity that there wil

Levart [38]

Answer:

Step-by-step explanation:

We would apply the formula for poisson distribution which is expressed as

P(x = r) = (e^- µ × µ^r)/r!

Where

µ represents the mean of the theoretical distribution.

r represents the number of successes of the event.

From the information given,

µ = 3.5

a)

For the probability that there will be at least 2 such accidents in the next month, it is expressed as

P(x ≥ 2) = 1 - P(x < 2)

P(x < 2) = P(x = 0) + P(x = 1)

Therefore,

P(x = 0) = (e^- 3.5 × 3.5^0)/0!

P(x = 0) = (e^- 3.5 × 1)/1

P(x = 0) = 0.03

P(x = 1) = (e^- 3.5 × 3.5^1)/1!

P(x = 1) = (e^- 3.5 × 3.5)/1

P(x = 1) = 0.11

P(x < 2) = P(x = 0) + P(x = 1) = 0.03 + 0.11 = 0.14

P(x ≥ 2) = 1 - 0.14 = 0.86

b)

For the probability that there will be at most 1 accident in the next month, it is expressed as

P(x ≤ 1) = P(x = 0) + P(x = 1)

P(x = 0) = 0.03

P(x = 1) = 0.11

P(x ≤ 1) = 0.03 + 0.11 = 0.14

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3 years ago

Lucy has 40 bean plants, 32 tomato plants and 16 pepper Plants. She wants to put the plants in rows with only one type of plant

My name is Ann [436]

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3 years ago