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Alisiya [41]
3 years ago
13

Solve the equation w2 = 47 ​

Mathematics
1 answer:
masha68 [24]3 years ago
7 0

Answer:

Hello! answer: w = 23.5

Step-by-step explanation:

It is asking what multiplied by 2 will get 47 so all we have to do is 47 ÷ 2 to get our answer so...

47 ÷ 2 = 23.5 so w = 23.5 Hope this helps!

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The fish population of a lake is decreasing each year. A study is conducted. But, unfortunately some data was lost. The research
Solnce55 [7]

Answer:

F(t) = 18000(0.6666)^{t}

Step-by-step explanation:

The fish population after t years can be modeled by the following equation:

F(t) = F(0)(1-r)^{t}

In which F(0) is the initial population and r is the constant rate of decay.

Year one the fish population was 18000

This means that F(0) = 18000

In year three the fish population was 8000 fish.

Two years later, so F(2) = 8000

F(t) = F(0)(1-r)^{t}

8000 = 18000(1-r)^{2}

(1-r)^{2} = 0.4444

\sqrt{(1-r)^{2}} = \sqrt{0.4444}

1 - r = 0.6666

r = 0.3334

So

F(t) = 18000(0.6666)^{t}

4 0
3 years ago
Suppose the average tread-life of a certain brand of tire is 42,000 miles and that this mileage follows the exponential probabil
Ahat [919]

Answer: The probability that a randomly selected tire will have a tread-life of less than 65,000 miles is 0.7872 .

Step-by-step explanation:

The cumulative distribution function for exponential distribution is :-

P(X\leq x)=1-e^{\frac{-x}{\lambda}}, where \lambda is the mean of the distribution.

As per given , we have

Average tread-life of a certain brand of tire :  \lambda=\text{42,000 miles }

Now , the probability that a randomly selected tire will have a tread-life of less than 65,000 miles will be :

P(X\leq 65000)=1-e^{\frac{-65000}{42000}}\\\\=1-e^{-1.54761}\\\\=1-0.212755853158\\\\=0.787244146842\approx0.7872

Hence , the probability that a randomly selected tire will have a tread-life of less than 65,000 miles is 0.7872 .

8 0
3 years ago
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Elza [17]

Answer:

a. it has reflectional symmetry with 16 line of symmetry

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3 years ago
Which mathematical symbol would best fill in the blank to compare the two real numbers 2__1.8
katrin [286]
Hello.

The mathematical symbol that would best fill the blank to compare both numbers is '>', which indicates a number is greater than the other.

Hope I helped.
6 0
3 years ago
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Julio and Tina open bank accounts on the same day. Julio opens his with $100 and
iren2701 [21]

Answer:

you would need just 4 equation

4 0
2 years ago
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