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Vika [28.1K]
3 years ago
8

It says solve for the variable I do t understand

Mathematics
1 answer:
SOVA2 [1]3 years ago
7 0

Answer:

x=11

Step-by-step explanation:

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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
Please help out ASAP it’s due tomorrow
docker41 [41]

Answer:

ndfnvf

Step-by-step explanation:

nfxnkbkfnkbflflfkdbnhidkbglzxmfdglzdnbDFLKBNdkgbzdfllinvj

8 0
3 years ago
If start fraction 1 over 3 end fraction is equivalent to 33start fraction 1 over 3 end fraction%, what percent is equivalent to
kotegsom [21]

Answer:

The answer is C 66%

Step-by-step explanation:

5 0
3 years ago
Suppose f(x)=x^3 find the graph of f(x+3)
hoa [83]

Replace x with x+3:

f(x+3) = (x+3)²

which is x² translated 3 units left

7 0
3 years ago
Linda left home and drove for 2 hours. She stopped for lunch then drove for another 3 hours at a rate that is 10 mph higher than
Verdich [7]

Answer:

44 mph

Step-by-step explanation:

Given that:

Before lunch :

Time taken = 2hrs ; at speed = x mph

After lunch :

Time taken = 3hrs ; at speed = x + 10 mph

Total distance covered = 250 miles :

Distance = speed * time

(2 * x) + (3 * (x + 10)) = 250

2x + 3x + 30 = 250

5x + 30 = 250

5x = 250 - 30

5x = 220

x = 220/ 5

x = 44 mph

Rate before lunch is 44mph

6 0
3 years ago
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