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3 years ago

PLZ HELP A GIRL OUT !!! GIVIN BRAINIEST !!!

Mathematics

2 answers:

tekilochka [14]3 years ago

7 0

Answer:

Step-by-step explanation:

because the par is 1 so it turns tonegative

zhenek [66]3 years ago

4 0

the answer is A.

the equation is f(n-1)+2. f is -6 and n is the number of term. so for example, if you want to find the second term, you substitute n for 2. then you solve.

-6(2-1)+2,

-6(1)+2,

-6+2= -4. therefore the second term is -4. you do this with n being 1,3,4,5 to get the sequence of

<em>2, -4, -10, -16, -22.</em>

<em />

hope this helped !!

You might be interested in

The fact family model represents 3 + 14 = 17.

PSYCHO15rus [73]

Answer:

3 is 14 less than 17

Step-by-step explanation:

17-3=14

7 0

3 years ago

Read 2 more answers

The quality control manager of a chemical company randomly sampled twenty 100-pound bags of fertilizer to estimate the variance

lisabon 2012 [21]

Answer:

The 95% confidence interval for the variance in the pounds of impurities would be $3.829 \leq \sigma^2 \leq 14.121$ .

Step-by-step explanation:

1) Data given and notation

$s^2 =6.62$ represent the sample variance

s=2.573 represent the sample standard deviation

$\bar x$ represent the sample mean

n=20 the sample size

Confidence=95% or 0.95

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population mean or variance lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

The Chi square distribution is the distribution of the sum of squared standard normal deviates .

2) Calculating the confidence interval

The confidence interval for the population variance is given by the following formula:

$\frac{(n-1)s^2}{\chi^2_{\alpha/2}} \leq \sigma^2 \frac{(n-1)s^2}{\chi^2_{1-\alpha/2}}$

On this case the sample variance is given and for the sample deviation is just the square root of the sample variance.

The next step would be calculate the critical values. First we need to calculate the degrees of freedom given by:

$df=n-1=20-1=19$

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a table to find the critical values.

The excel commands would be: "=CHISQ.INV(0.025,19)" "=CHISQ.INV(0.975,19)". so for this case the critical values are:

$\chi^2_{\alpha/2}=32.852$

$\chi^2_{1- \alpha/2}=8.907$

And replacing into the formula for the interval we got:

$\frac{(19)(6.62)}{32.852} \leq \sigma^2 \frac{(19)(6.62)}{8.907}$

$3.829 \leq \sigma^2 \leq 14.121$

So the 95% confidence interval for the variance in the pounds of impurities would be $3.829 \leq \sigma^2 \leq 14.121$ .

4 0

4 years ago

How do I find x? Do I find the hypotenuse of 15 and 18, then with that answer minus it by 22^2 in a root?

pogonyaev

8+x= $\sqrt{22^2-15^2}$ => 8+x = 15 => x = 15-8=7

7 0

4 years ago

Which of the following is a list that follows this pattern with its numbers: prime, prime, prime, composite, prime, prime 1, 5,

Pani-rosa [81]

The correct answer is option A which is the pattern {prime, prime, prime, composite, prime, prime} is followed by 1, 5, 7, 9, 11, 13.

<h3>What are prime and composite numbers?</h3>

Prime numbers:-

The prime number is defined as the number which is divided by 1 and itself.

Composite numbers:-

The number is defined as the composite number when the number is divided by 1 itself and any other numbers also.

From the given options we need to choose the pattern of the series { prime, prime, prime, composite, prime, prime } so we can see that in option A correct pattern is followed.

Pattern { 1, 5, 7, 9, 11, 13 }

1 → prime

5 → prime

7 → prime

9 → composite

11 → prime

13 → prime

Therefore the correct answer is option A which is the pattern {prime, prime, prime, composite, prime, prime} is followed by 1, 5, 7, 9, 11, 13.

To know more about prime and composite numbers follow

brainly.com/question/375267

#SPJ1

7 0

2 years ago

Please give me the answer

Lunna [17]

Answer:

37°

Step-by-step explanation:

As we know the sum of angles of a triangle is 180 degrees.

Therefore,

angle A + angle B + angle C = 180°

In the given picture two angles are given and we have to find out the third angle.

x° + 45° + 98° = 180°

x° + 143° = 180°

x° = 180° - 143°

x° = 37°

The value of x in the triangle shown is 37°.

3 0

3 years ago