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just olya [345]
3 years ago
9

Simplify the rational expression x-2/x2+3x-10

Mathematics
2 answers:
Schach [20]3 years ago
8 0
3x^3-10x^2+x-2 over x^2
Allisa [31]3 years ago
4 0
The answer is 1/x+5.

To get this:
    <u>x - 2</u>          ⇒     <u>x - 2</u>      
x² + 3x - 10    (x - 2)(x + 5)
Cancel out any repeating factors. In this case, we have (x - 2);
     <u>x - 2</u>         ⇒       <u>1</u>
(x - 2)(x + 5)         x + 5

<em>Hope this helps.</em>
                            

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MariettaO [177]

Answer:

3.6009161e+40

Step-by-step explanation:

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The sample consisted of 50 night students, with a sample mean GPA of 3.02 and a standard deviation of 0.08, and 25 day students,
bulgar [2K]

Answer: The test statistic is t= -0.90.

Step-by-step explanation:

Since we have given that

n₁ = 50

n₂ = 25

\bar{x_1}=3.02\\\\\bar{x_2}=3.04\\\\\sigma_1=0.08\\\\\sigma_2=0.06

So, s would be

s=\sqrt{\dfrac{n_1\sigma_1^2+n_2\sigma_2^2}{n_1+n_2-2}}\\\\s=\sqrt{\dfrac{50\times 0.08^2+25\times 0.06^2}{50+25-2}}\\\\s=0.075

So, the value of test statistic would be

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Hence, the test statistic is t= -0.90.

7 0
3 years ago
Grasshoppers are distributed at random in a large field according to a Poisson process with parameter a 5 2 per square yard. How
HACTEHA [7]

In this question, the Poisson distribution is used.

Poisson distribution:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given interval.

Parameter of 5.2 per square yard:

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P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

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Thus, the radius should be of at least 0.89.

Another example of a Poisson distribution is found at brainly.com/question/24098004

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ki77a [65]

<u>Given</u>:

A cylindrical tank has a height of 10 feet.

The radius of the cylindrical tank is 4 feet.

Jane fills the tank with water at a rate of 8 cubic feet per minute.

We need to determine the time it will take for Jane to completely fill the tank without overflowing it.

<u>Volume of the cylinder:</u>

The volume of the cylinder can be determined using the formula,

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Substituting the values, we have;

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The time taken can be determined using the formula,

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Substituting the values, we have;

Time = \frac{502.4}{8}

Time = 62.8

Thus, Jane takes 62.8 minutes to completely fill the tank without overflowing it.

3 0
3 years ago
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