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gizmo_the_mogwai [7]
3 years ago
5

Solve the equation using the Zero-Product Property. –8n(10n – 1) = 0

Mathematics
2 answers:
CaHeK987 [17]3 years ago
8 0

Answer: The solution is,

n = 0\text{ or }n = \frac{1}{10}

Step-by-step explanation:

Since, Zero product property states that if the product of two numbers or expression is equal to zero then either of the numbers or expressions must be equal to zero.

That is, If a.b = 0 ⇒ a = 0 or b = 0

Here, the given expression is,

-8n(10n-1)=0

\implies (-8n)(10n-1)=0

Thus, by the above property,

-8n = 0\text{ or }(10n-1)=0

\implies n = \frac{0}{-8}\text{ or }10n= 1

\implies n = 0\text{ or }n = \frac{1}{10}

Irina-Kira [14]3 years ago
6 0
The answer to your question is n=0 or n=1/10
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Answer:

The helicopter must cover a straight line distance of approximately 61.270 miles from the hospital to the wreck site.

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Step-by-step explanation:

8 0
2 years ago
39.39÷3 Show ur work plz
kiruha [24]

Answer:

13.13

Step-by-step explanation:

39.39 ÷ 3

13.13

There is not a lot of work

Looking at it we can tell that 3 will go into 3 one time, and 3 will go into 9 three times because:

1 x 3 = 3

3 x 3 = 9

3 0
3 years ago
Read 2 more answers
Can you pls help me solve this?​
soldi70 [24.7K]

Answer:

x=6. x=15

Step-by-step explanation:

13. x=6

16. x=15

7 0
3 years ago
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A researcher claims that the variation in the salaries of elementary school teachers is greater than the variation in the salari
guajiro [1.7K]

Answer:

a

The null hypothesis is  H_o :  \sigma^2_1 = \sigma^2 _2

The alternative hypothesis is H_a :  \sigma_1 ^2 > \sigma^2_2

b

F_{critical} = 1.8608

c

F = 2.9085

d

    The decision rule is  

Reject the null hypothesis

e

There is sufficient evidence to support the researchers claim

Step-by-step explanation:

From the question we are told that

 The first sample size is  n_1 = 30

 The sample variance for elementary school is  s^2_1 = 8324

 The second sample size is  n_2 = 30

  The sample variance for the secondary school is  s^2_2 = 2862

   The significance level is  \alpha = 0.05

The null hypothesis is  H_o :  \sigma^2_1 = \sigma^2 _2

The alternative hypothesis is H_a :  \sigma_1 ^2 > \sigma^2_2

Generally from the F statistics table  the critical value of \alpha = 0.05 at first and  second degree of freedom df_1 = n_1 - 1 = 30 - 1 = 29 and  df_2 = n_2 - 1 = 30 - 1 = 29 is  

         F_{critical} = 1.8608

Generally the test statistics is mathematically represented as

       F = \frac{s_1^2 }{s_2^2}

=>   F = \frac{8324 }{2862}

=>   F = 2.9085

Generally from the value obtained we see that  F >  F_{critical } Hence

   The decision rule is  

Reject the null hypothesis

    The conclusion is  

  There is sufficient evidence to support the researchers claim

   

4 0
2 years ago
Please answer now plz!!!! A farmer is trying to determine the number of plaintiff plaints in a farm that covers 21 acres. He mar
Natali5045456 [20]

Answer:

D) 12,656

Step-by-step explanation:

First of all, as they have given us 3 quantities of plants in 1/2 an acre, we can work out the average amount of plants in 1 whole acre.

In the first 1/2 acre there were:

  • 291 plants

In the second 1/2 acre there were:

  • 327 plants

In the third 1/2 acre there were:

  • 286 plants

to work out the average, we add all these together then divide them by 3 (as there are 3 examples)

291 + 327 + 286 = 904

904 ÷ 3 = 301.3 (this is the average amount of plants in every 1/2 acre.) If we multiply this answer by 2 we will get the average amount of plants in every acre.

301.3 x 2 = 602.67 (average plants in every 1 acre) multiply by total acres (21) for your answer

602.67 x 21 = 12656 average plants in total

I hope this was helpful :-)

8 0
3 years ago
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