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2 years ago

There are 120 people at a party 1/3 of the people leave the party work out the number of people still at the party

Mathematics

1 answer:

zvonat [6]2 years ago

8 0

Answer:

There is 80 people still at the party

Step-by-step explanation:

To find how many people are still at the party we first have to find how much 1/3 of 120 is.

∴120/3=40

then we subtract 1/3 of 120 from 120 to get the answer

∴120-40=80

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Below is a probability distribution for the number of failures in an elementary statistics course. X 0 1 2 3 4 P(X=x) 0.41 0.18

faust18 [17]

Answer:

a) P(X=2)= 0.29

b) P(X<2)= 0.59

c) P(X≤2)= 0.88

d) P(X>2)= 0.12

e) P(X=1 or X=4)= 0.24

f) P(1≤X≤4)= 0.59

Step-by-step explanation:

a) P(X=2)= 1 - P(X=0) - P(X=1) - P(X=3) - P(X=4)= 1-0.41-0.18-0.06-0.06= 0.29

b) P(X<2)= P(X=0) + P(X=1)= 0.41 + 0.18 = 0.59

c) P(X≤2)= P(X=0) + P(X=1) + P(X=2)=0.41+0.18+0.29= 0.88

d) P(X>2)=P(X=3) + P(X=4)=0.06+0.06= 0.12

e) P(X=1 or X=4)=P(X=1 ∪ X=4) = P(X=1) + P(X=4)=0.18+0.06= 0.24

f) P(1≤X≤4)=P(X=1) + P(X=2) + P(X=3) + P(X=4)=0.18+0.29+0.06+0.06= 0.59

3 0

3 years ago

Read 2 more answers

James knows that when he walks, he takes about 120

Tpy6a [65]

Answer:

speed of James is: 3.75 miles/hour.

Step-by-step explanation:

We need to find the speed of James in miles per hour(mi/hr)

we know that 1 mile=5280 feet

James takes 120 steps in 1 minute so he will cover 120×60 steps in 1 hour.

i.e. he takes 7200 steps in 1 hour.

also each step of James=2.75 feet

total distance covered by James in 1 hour=2.75×7200 feet=19800 feet

$19800feet=\frac{19800}{5280} miles=3.65miles$

hence speed of James= (distance covered by james in 1 hour)/1 hour

speed of James=3.75 miles/hour.

Thanks!!

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2 years ago

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A tennis ball weighs about 57.6 grams. about how many apuntes would 12 tennis balls weigh?

Ilia_Sergeevich [38]

Answer:

The weight of 12 tennis balls = 691. 2 grams

Step-by-step explanation:

The weight of each tennis ball = 57.6 grams

So, the weight of 12 balls = 12 x ( weight of 1 ball)

= 12 x 57.6 grams

= 691.2 grams

⇒12 balls weigh 691.2 grams

Hence, the weight of 12 tennis balls = 691. 2 grams

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3 years ago

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kari74 [83]

Answer:

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3 years ago

Nickolai lives at one end of Oregon Trail. Sydney lives at the other end of the trail. It is 5.8 kilometers from one end of Oreg

OleMash [197]

5.8 km - 2.79 km = 3.01 km

3.01 km = 3010 m

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3 years ago

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