Find a₁ for the geometric series described.
Sn = -26,240, n = 8, r = -3

Answer:

Step-by-step explanation:

Went is the correct answer

(a) Option A, if its value is a large positive number, statistic A x2 provides strong evidence for the alternative hypothesis.

(b) Option B, the null hypothesis that gender is not related to personal goals and the alternative hypothesis that gender is related to personal goals.

(c) Option B, the variables considered in the chi-square test for the evaluation of contingency table B are categorical variables.

(a) If the x2 statistic is a large positive number, it provides strong evidence for the alternative hypothesis. The x2 statistic is used in hypothesis testing to determine if there is a significant difference between observed and expected frequencies. Large positive values ​​indicate that the observed frequency is significantly different from the expected frequency, supporting the alternative hypothesis.

(b) The hypotheses tested in the chi-square test for the contingency table are the null hypothesis that gender is not related to personal goals and the alternative hypothesis that gender is related to personal goals. personal goals. This test determines whether there is a significant relationship between two categorical variables.

(c) The variables considered in the chi-square test used to evaluate the contingency table are categorical variables. These variables cannot be assumed to be mean or normally distributed. The chi-square test is used to analyze the relationship between two or more categorical variables, where each variable has a discrete set of categories.

Complete Question:

For each problem, select the best response (a) A x2 statistic provides strong evidence in favor of the alternative hypothesis if its value is A. a large positive number. OB. exactly 1.96 c. a large negative number. D. close to o E. close to 1. (b) A study was performed to examine the personal goals of children in elementary school. A random sample of students was selected and the sample was given a questionnaire regarding achieving personal goals. They were asked what they would most like to do at school: make good grades, be good at sports, or be popular. Each student's sex (boy or girl) was also recorded. If a contingency table for the data is evaluated with a chi-squared test, what are the hypotheses being tested? A. The null hypothesis that boys are more likely than girls to desire good grades vs. the alternative that girls are more likely than boys to desire good grades. OB. The null hypothesis that sex and personal goals are not related vs. the alternative hypothesis that sex and personal goals are related. C. The null hypothesis that there is no relationship between personal goals and sex vs. the alternative hypothesis that there is a positive, linear relationship. OD. The null hypothesis that the mean personal goal is the same for boys and girls vs. the alternative hypothesis is that the means differ. O E. None of the above. (C) The variables considered in a chi-squared test used to evaluate a contingency table A. are normally distributed. B. are categorical. C. can be averaged. OD. have small standard deviations. E. have rounding errors.

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Answer:

B.

Step-by-step explanation:

The set of all real numbers where  1≤x<18.

Answer:

12

Step-by-step explanation:

let the number=x

7(x-10)=x+2

7x-70=x+2

7x-x=2+70

6x=72

x=72/6=12

the correct way to report the results of a hypothesis test and a measure of effect size using a t-statistic is option A: t(19)=2.30, r2=0.42, p<0.05.

The correct way to report the results of a hypothesis test and a measure of effect size using a t-statistic depends on the specific journal or style guide you are using. However, in general, the most common format is to report the t-value, degrees of freedom, and p-value first, followed by the measure of effect size.

So, looking at the options provided, we can eliminate option D because it only reports the t-value, degrees of freedom, p-value, and effect size all at once without separating them. Now, we are left with options A and B. Both options report the t-value, degrees of freedom, and p-value first, followed by the effect size. However, there is a difference in the order of the p-value and effect size. Option A reports the effect size as r2=0.42 after the p-value, while option B reports the effect size as r2=0.42 before the p-value.

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Another way to write the absolute value inequality lp|≤12 is -12≤p≤12

Inequality are expression not separated by an equal sign. Given the inequality expression

lp|≤12

The modulus can be positive or negative

If positive, p ≤12 and if negative -p≤12 or p ≥- 12

Combine both solutions

-12≤p≤12

Hence another way to write the absolute value inequality lp|≤12 is -12≤p≤12

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2/7  is the probability that the two points are one unit apart .

Describe probability using an example?

A number between 0 and 1 is the probability of an event, where, broadly speaking, 0 denotes the event's impossibility and 1 denotes its certainty.        

                                 The likelihood of an event occurring increases as its probability increases. The flip of a fair (impartial) coin serves as a straightforward illustration.

The two points are one unit apart at 8 places around the edge of the square.

There are \(( ^{8} _{2} )\) = 28  ways to choose two points.

The probability is  8/28  =  2/7

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Answer:

  (a)  {x| –4 < x ≤ 4}

Step-by-step explanation:

The domain is the horizontal extent of the graph.

Your problem statement tells you the left end is an open circle at x=-4, and the right end is a closed circle at x=4. The domain is ...

  -4 < x ≤ 4

Answer:A

Step-by-step explanation:

Answer:

The fence must have:

220 meters

Step-by-step explanation:

The perimeter of the field is equal to the long of the fence round the field.

then:

perimeter = 2(long + wide)

perimeter = 2(85 + 25)

perimeter = 2*110

perimeter = 220m

Answer:

Step-by-step explanation:

Answer:

0.085 m

Step-by-step explanation:

change in displ. = change in velocity ÷ change in time

so,

x = v ÷ t

= -1.7 m/s ÷ 20s

=0.085 m

Answer:

0.085 m

......:.:.:.:.

Option A is the answer. The system of inequalities that can be used to determine the number of gallons of chocolate ice cream and the number of 5-quart containers of vanilla ice cream that Krystal can buy for this dinner is:

8c + 6v ≤ 70

8c + 6v ≤ 7016c + 20v ≥ 150

The cost of c gallons of chocolate ice cream is $8c, and the cost of v containers of vanilla ice cream is $6v. Krystal wants to spend no more than $70 on ice cream, so the inequality for the total cost of ice cream is:

8c + 6v ≤ 70

Krystal needs at least 150 servings of ice cream, and each gallon of chocolate ice cream provides 16 servings, while each container of vanilla ice cream provides 20 servings. The inequality for the total number of servings of ice cream is:

16c + 20v ≥ 150

Therefore, the system of inequalities that can be used to determine the number of gallons of chocolate ice cream and the number of 5-quart containers of vanilla ice cream that Krystal can buy for this dinner is:

8c + 6v ≤ 70

16c + 20v ≥ 150

Option A is the correct answer.

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Taking into account the definition of a system of linear equations, the number of hours Aria worked lifeguarding and washing cars last week is 2 and 10 respectively.

A system of equations contains two or more linear equations that share two or more unknowns.

To find the solution to a system of equations, you must find the values of the unknowns that satisfy all the equations in the system.

In this case, a system of linear equations must be proposed taking into account that:

You know:

So, the system of equations to be solved is

x + y= 12

16x + 8y= 112

The graphical method to solve a system of equations consists of representing the equations and calculating their intersection point. This point is the solution of the system because its coordinates satisfy both equations.

In this case, when graphing both equations of the system of equations (attached graph), it is obtained that the point of intersection is (2,10). This indicates that the number of hours Aria worked lifeguarding last week is 2 and the number of hours Aria worked washing cars last week is 10.

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Answer:

2. X^2-7x+3

Step-by-step explanation:

Answer:

I hope this helps!

Answer:=

−

8

c

−

6

y

−

1

Step-by-step explanation:= -8c -6y -1

Answer:

2/5

Step-by-step explanation:

m = (2-4)/(-2-3) = 2/5

Answer:

there were no inequalities to choose from but I believe the answer is y ≤ 4x

Step-by-step explanation:

Answer:

What is a Proof?

A series of steps, with justifications, that verifies a theorem or relationship exists

Types of Proofs

Two-column Proofs a table with two columns; the first column is the mathematical statement, and the second column is the justification

Paragraph Proofs a type of proof that explains the rationale for each step using complete sentences in paragraph form

Flow Chart Proofs a diagram that contains the steps of the proof and the justification for each one

------------------------

Answer:

74 , 138

Step-by-step explanation:

12 + 2 = 14

14 + 4 = 18

18 + 8 = 26

26+16 = 42

42+32= 74

74+64 =138

please make my answer as brainelist

Answer:

130% increase

Step-by-step explanation:

(322-140)/140(100)=130% increase.

(you set the final price on top, and original price in the denominator, and x/100 is the rate of increase)

cross multiply, and you get 130%.

h = 11.9 cm

cos = adjacent/ hypotenuse

therefore:

cos(24) = h/ 13

rearrange:

h = 13cos(24)

put into calculator:

h = 11.8760...

rounded to one decimal point:

h = 11.9cm

Answer:

y= -12x - 42

Step-by-step explanation:

slope intercept form is y=mx +b

y-6 = -12(x+4)     simplify

y - 6 = -12x - 48    separate y by adding 6 to both sides of the equation

y = -12x - 42

The total number of antennas in the 802.11ac Wi-Fi network, considering the AP and the stations, is 32 antennas.

The access point (AP) has 8 antennas, which are used for transmitting and receiving signals. The stations, which are the devices connected to the Wi-Fi network, have the following numbers of antennas:

Station A: 4 antennas

Station B: 2 antennas

Station C: 2 antennas

Station D: 1 antenna

Station E: 1 antenna

Station F: 1 antenna

To find the total number of antennas in the network, we simply add up the number of antennas for each device. Therefore, the total number of antennas in the network is 8 (AP antennas) + 4 + 2 + 2 + 1 + 1 + 1 = 19 antennas.

However, it's important to note that the question states that the network consists of an 8-antenna AP and 6 stations. This implies that the AP is separate from the stations and contributes its own set of antennas. Therefore, the total number of antennas in the 802.11ac Wi-Fi network, including the AP and the stations, is 8 + 4 + 2 + 2 + 1 + 1 + 1 = 19 + 8 = 27 antennas.

In summary, the 802.11ac Wi-Fi network consists of a total of 32 antennas (8 from the AP and 24 from the stations).

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Answer:

5.6

Step-by-step explanation:

11*7=77

11.8*7= 82.6

82.6-77=5.6

\(\\ \sf\longmapsto f(x)=x+3\)

\(\\ \sf\longmapsto f(-2)\)

\(\\ \sf\longmapsto -2+3\)

\(\\ \sf\longmapsto 1\)

f(-2) = -2 + 3

f(-2) = 3 - 2

f(-2) = 1

Answer:

Step-by-step explanation:

Step one:

given data

we are told that the cost of the guitar is $2000

and that 12% of the cost must be paid for Jesse to take the guitar home.

Hence we aim to know what 12% of $2000 is

Step two:

The expression is

=12/100*2000

=0.12*2000

=240

This means that Jesse must pay $240 before he can take the guitar home

Answer:

30.33

Step-by-step explanation:

33.70 x .10= 3.37 (discount)

33.70 - 3.37= 30.33