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Shtirlitz [24]
3 years ago
7

Substitution -just 4.g) r=-3.2p+q^2

Mathematics
1 answer:
Vlada [557]3 years ago
5 0

Answer is 25.6 you just put the numbers and multiply them and then add them

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Name number that is rational but not and interger or a whole number
iogann1982 [59]

Providing a short wikipedia definition here: "In mathematics, a rational number is any number that can be expressed as the quotient or fraction"

So any fraction would work for this question I believe?

3 0
3 years ago
Y=6(x-7)^2……. any one know this ?
alex41 [277]

Answer: 6x^2-84x+294

Step-by-step explanation:

Use the foil method to solve (x-7)^2 and then multiply your result by 6.

4 0
3 years ago
Read 2 more answers
K(x) = 2x – 4; Find k (x + 4)
Iteru [2.4K]

Answer:

k=  −2x−16 /x

Step-by-step explanation:

5 0
2 years ago
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const2013 [10]

Step-by-step explanation:

7 0
2 years ago
Assume that a simple random sample has been selected from a normally distributed population. Find the test statistic t.
lawyer [7]

Using the t-distribution, it is found that the p-value of the test is 0.007.

At the null hypothesis, it is <u>tested if the mean lifetime is not greater than 220,000 miles</u>, that is:

H_0: \mu \leq 220000

At the alternative hypothesis, it is <u>tested if the mean lifetime is greater than 220,000 miles</u>, that is:

H_1: \mu > 220000.

We have the <u>standard deviation for the sample</u>, thus, the t-distribution is used. The test statistic is given by:

t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}

The parameters are:

  • \overline{x} is the sample mean.
  • \mu is the value tested at the null hypothesis.
  • s is the standard deviation of the sample.
  • n is the sample size.

For this problem:

\overline{x} = 226450, \mu = 220000, s = 11500, n = 23

Then, the value of the test statistic is:

t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{226450 - 220000}{\frac{11500}{\sqrt{23}}}

t = 2.69

We have a right-tailed test(test if the mean is greater than a value), with <u>t = 2.69</u> and 23 - 1 = <u>22 df.</u>

Using a t-distribution calculator, the p-value of the test is of 0.007.

A similar problem is given at brainly.com/question/13873630

8 0
2 years ago
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