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ycow [4]
2 years ago
8

I need help please!

Mathematics
1 answer:
o-na [289]2 years ago
5 0

Answer:0

Step-by-step explanation:

X = 0

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A health study tracked a group of person for five years. At the beginning of the study, 20% were classified as heavy smokers, 30
Aleks04 [339]

Answer: 0.421

Step-by-step explanation:

Heavy smoker = 20%

Light smoker = 30%

Non smokers = 50%

We can assume that the probability that a non-smoker is going to die in the next 5 years be y.

Since light smokers were twice as likely as nonsmokers to die during the five-year study, the probability will be:

= 2 × y = 2y

Probability for the Heavy smokers will be:= 2 × 2y = 4y

The expected number of people that will die for each in the next 5 years will be:

Non smoker:

= 50% × y

= 0.5 × y

= 0.5y

Light smoker:

= 30% × 2y

= 0.3 × 2y.

= 0.6y

Heavy smoker:

= 20% × 4y.

= 0.2 × 4y

= 0.8y

Total = 0.5y + 0.6y + 0.8y = 1.9y

The probability that the participant was a heavy smoker will be:

= 0.8y/1.9y

= 0.421

3 0
3 years ago
A rental car agency charges $220.00 per week plus 50.15 per mile to rent a car. How many miles can you travel in one week for $3
babymother [125]

Answer:2.81

Step-by-step explanation:

First you subtract the per week (220) from your budget (361)

You get 141

You now divide 141 by 50.15

You come out to 2.81

This means you can drive up to 2.81 miles but no more

8 0
3 years ago
CAN SOMEONE PLEASE HELP ME???
leva [86]

Answer: The answer is B

Step-by-step explanation: I got the answer right

5 0
2 years ago
Read 2 more answers
ANDY IS COMING!!!!!!
aleksklad [387]

Answer:

A

Step-by-step explanation:

When Andy walks in you fall

8 0
2 years ago
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A ladder leans against a 22-feet-tall apple tree. The base of the ladder forms a 42° angle with the ground. Approximately how ta
igomit [66]

(D) 33 feet

<u>Explanation:</u>

Given:

Height of the tree, h = 22 feet

angle, θ = 42°

Length of the ladder, l = ?

We know:

sin θ = Perpendicular / hypotenuse

So,

Sin θ = height of the tree / length of the ladder

sin 42^0 = \frac{22}{l} \\\\0.67 = \frac{22}{l} \\\\l = 32.84 feet

l = 32.84 feet ≈ 33 feet

Therefore, the length of the ladder be to reach the top of the apple tree is 33 feet.

6 0
2 years ago
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