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Dvinal [7]
2 years ago
9

Find all the zeros of the equation -2x^4+27x^2+1200=0

Mathematics
1 answer:
Angelina_Jolie [31]2 years ago
4 0
For this case we have the following polynomial:
 -2x ^ 4 + 27x ^ 2 + 1200 = 0
 To solve the problem we apply the following steps:
 1) We make a change of variables u = x ^ 2
 2) We rewrite the polynomial
 3) Solve the quadratic equation using the formula for the quadratic equation
 4) We return the change and find four roots
 Answer:
 
See attached image for procedure and solution

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After years of maintaining a steady population of 32,000, the population of a town begins to grow exponentially. After 1 year an
galben [10]

Answer:

y=32000(1+0.08)^x

Step-by-step explanation:

Exponential growth function is y=a(1+r)^x

Where 'a' is the initial population

r is the rate of growth and x is the time period in years

a steady population of 32,000. So initial population is 32,000

an increase of 8% per year. the rate of increase is 8% that is 0.08

a= 32000 and r= 0.08

Plug in all the values in the general equation

y=a(1+r)^x

y=32000(1+0.08)^x

y=32000(1+0.08)^x

4 0
2 years ago
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Find the sequence.. <br> 1,2,2,4,8
AlladinOne [14]
Let the n-th term be called a_n

We see that if we choose a_0=1,a_1=2 then the other numbers follow the pattern a_{n+2}=a_{n+1}\cdot a_n (see :4=2*2,8=4*2)

Hence the sequence will be 1,2,2,4,8,32,256, 8192, 2097152, 17179869184,\dots
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2 years ago
It is known that driving can be difficult in regions where winter conditions involve snow-covered roads. For cars equipped with
noname [10]

Answer:

The null and alternative hypothesis for this test are

H_0: \mu\ge 215\\\\H_1: \mu< 215

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If we perform a hypothesis test, we can reject or not reject the null hypothesis.

To conclude that the tires have a decreased stopping distance (μ<215), we should state the null hypothesis H_0: \mu\ge 215 and then go on with the analysis to reject it (or not).

If the null hypothesis is rejected, the claim of the manufacturer is rigth.

The alternative hypothesis would be H_1: \mu, that would turn rigth if the null hypothesis is rejected.

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2 years ago
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Step-by-step explanation:

Put the value of x = -6 to all expressions:

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2 years ago
One evening 1400 concert tickets were sold for the Fairmont Summer Jazz Festival. Tickets cost ​$20 for covered pavilion seats a
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The answer to the question

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