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antiseptic1488 [7]
2 years ago
14

6 times the sum of a number t and 5 is s

Mathematics
1 answer:
podryga [215]2 years ago
8 0
Do you have any multiple choice questions? because I would need some choices so i could help you answer the question.
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Bob discovers a box with 30 identical, used, rechargeable batteries in his attic.
monitta

Answer:

a) All of them are out of charge = 9.31x10⁻¹⁰

b) 20% of them are out of charge = 5.529x10⁻⁴

Step-by-step explanation:

This problem can be modeled as a binomial distribution since

There are n repeated trials and all of them are independent of each other.

There are only two possibilities: battery is out of charge and battery is not out of charge.

The probability of success does not change with trial to trial.

Since it is given that it is equally likely for the battery to be out of charge or not out of charge so probability of success is 50% or 0.50

P = 0.50

1 - P = 0.50

a) All of them are out of charge?

Probability = nCx * P^x * (1 - P)^n-x

Probability = ₃₀C₃₀(0.50)³⁰(0.50)⁰

Probability = 9.31x10⁻¹⁰

b) 20% of them are out of charge?

0.20*30 = 6 batteries are out of charge

Probability =₃₀C₆(0.50)²⁴(0.50)⁶

Probability = 5.529x10⁻⁴

5 0
3 years ago
The triangles shown below must be congruent. A. True or B. False
Leona [35]
A.true
Because congruent angles are exactly the same measure
7 0
3 years ago
Read 2 more answers
A book has 500 pages numbered 1,2,3 and so on. How many times does the digit 1 appear in the page numbers?
elena-14-01-66 [18.8K]

Answer:

200

Step-by-step explanation:

This book has 500 pages in total.

We should split up the place values.

1 - 9

One only appears once.

1

10 - 19

One appears 11 times.

1 + 11

20 - 99

One only appears 8 times.

1 + 11 + 8

Add:

1 + 11 + 8

=> 20

Since the same is for  200-299, and so on. Let us add twenty four times.

20 * 4

=> 80

Looking back to 100-199, there are 120 ones.

Add:

120 + 80

=> 200

4 0
3 years ago
Hello answer and I will give you brainliest:No cheating!
stich3 [128]
The answer is 58,875

6 0
2 years ago
mr ogata drove 276 mies from his house to los angeles at an average speed of 62 miles per hour. how long did it take him to get
Ilia_Sergeevich [38]
About 5 hours. I did this by dividing and rounding 276 by 62. Hope this helps!
4 0
2 years ago
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