Is it zero or u defined?

Answers

Answer 1

Answer:

0 slope as it is a horizontal line when you graph it

Step-by-step explanation:

Related Questions

A researcher wants to determine whether or not a five-week crash diet is effective over a long period of time. A random sample of 15 dieters is selected Each person's weight is recorded before starting the diet and one year after it is concluded. Based on the data shown at right (weight in pounds), Can we conclude that the diet has a long-term effect, that is, that dieters manage to not regain the weight they lose? Include appropriate statistical evidence to justify your answer.

BEFORE
158 185 176 172 164 234 258 200 228 246 198 221 236 255 231

AFTER
163 182 188 150 161 220 235 191 228 237 209 220 222 268 234

Answers

Using the t-distribution, as we have the standard deviation for the sample, it is found that it cannot be concluded that the diet has a long-term effect.

What are the hypotheses tested?

At the null hypotheses, it is tested if there is no difference in the weights, that is:

[tex]H_0: \mu_A - \mu_B = 0[/tex]

At the alternative hypotheses, it is tested if the weights decrease, that is:

[tex]H_1: \mu_A - \mu_B < 0[/tex]

What is the mean and the standard deviation of the distribution of the difference?

Using a calculator, for each sample, we have that:

[tex]\mu_B = 210.8, s_B = 33.85, sE_B = \frac{33.85}{\sqrt{15}} = 8.74[/tex]

[tex]\mu_A = 207.2, s_A = 33.47, sE_A = \frac{33.47}{\sqrt{15}} = 8.64[/tex]

Hence, for the distribution of differences, we have that:

[tex]\overline{x} = \mu_A - \mu_B = 207.2 - 210.8 = -3.6[/tex]

[tex]s = \sqrt{sE_B^2 + sE_A^2} = \sqrt{8.74^2 + 8.64^2} = 12.3[/tex]

What is the test statistic?

It is given by:

[tex]t = \frac{\overline{x} - \mu}{s}[/tex]

In which [tex]\mu = 0[/tex] is the value tested at the null hypothesis.

Then:

[tex]t = \frac{\overline{x} - \mu}{s}[/tex]

[tex]t = \frac{-3.6 - 0}{12.3}[/tex]

[tex]t = -0.29[/tex]

What is the decision?

Considering a left-tailed test, as we are testing if the mean is less than a value, with a standard significance level of 0.05 and 15 + 15 - 2 = 28 df, the critical value is of [tex]t^{\ast} = -1.7[/tex].

Since the test statistic is greater than the critical value for the left tailed test, it cannot be concluded that the diet has a long-term effect, as the null hypothesis is not rejected.

To learn more about the t-distribution, you can check https://brainly.com/question/13873630

ASAP NO LINKS SOLVE 2 QUESTIONS PLEASE

71. If March of a certain year has 5 Sundays, on what days of the week could St. Patrick's
Day fall? (St. Patrick's Day is March 17")

73. how many positive integers less than 1000 have the sum of the digits equal to four?

Answers

71 = When Is St. Patrick’s Day?

St. Patrick’s Day is officially observed on March 17 each year, though celebrations may not be limited to this date. The significance of March 17 is that it’s said to be the date of St. Patrick’s death in the late 5th century (circa A.D. 493).

St. Patrick’s Day Dates

Year St. Patrick’s Day

2021 Wednesday, March 17

2022 Thursday, March 17

2023 Friday, March 17

2024 Sunday*, March 17

73 = 28

Plz i need help urgently I’ll mark brainiest the sum of a number, two thirds of the number and a quarter number of the number gives 5 3/4, find the number

Answers

Step-by-step explanation:

so you have to make an equation where you let x=the number, so it would be

x+(2/3)x+(1/4)x=5 3/4

you combine the like terms to get

(23/12)x = 5 3/4

multiply both sides by the reciprocal of 23/12 to isolate x, and you're left with

x=36/92, which simplifies to 9/23.

Solve the inequality. 5+5(-7x+ 1) ≥ -130 write answer in the format variable inequality number

Answers

Answer:

x<_ 4

Step-by-step explanation:

first you distribute 5 to equal 5-35x+5 then you would carry the non variables to one side to be -35x>_-140 and the you would flip the sides because te variable is negative so it would be -35x<_ -140 the divid to get x<_4

Answer: x is less than or equal to 4

Distribute -5
5+-35x+5>-130

Combine like terms
10+-35x>-130

Subtract 10 from both sides
-35x>-140

Divide by -35 on each side
(Flip the sign since you divide by a negative)

-35x/35 > -140/35

ANSWER x is less than or equal to 4

How do u do this pls someone help me I’ve failed math for 3 quarters straight

Answers

Answer:

1. 84in³

2. 180cm³

3. 600ft³

4. 360cm³

5. 312cm³

6. 15.6kg

7. 1.95kg

Step-by-step explanation:

1: V = Bh = (7x3)x4 = 84in³

2: V = Bh = 1/2(8x5) x 9

= 20 x 9

= 180cm³

3: V = Bh = 1/2(b1+b2) h x 5

= 1/2(20+10) 8 x 5

= 15 x 8 x 5

= 15 x 40

= 600ft³

4: V = Bh = 1/2 (4x9) x 20

= 18 x 20

= 360cm³

5: Total volume = Volume of rectangular prism + Volume of triangular block

= (8.5 x 4 x 9) + 1/2(1.5 x 2) x 4

= 306 + 6

= 312cm³

6: divide 312cm³ by 20kg/cm³ to get the approx. mass:

312/20 = 15.6kg

7: first find the volume of the friends Display:

= (4.25 x 2 x 4.5) + 1/2(0.75 x 1) x 2

= 38.25 + 0.75

= 39cm³

Now divide by 20 to find the approx. weight of the friends display:

39/20 = 1.95kg

Have a nice day! :)

What is the value of [3(−2)−7]÷(1.5+0.5)?

Answers

Answer: -13/2

Step-by-step explanation: hope this helps plz mark as brainliest:)

What is the slope of the equation y= 5/4 times -7/4

Answers

Answer:

5/4

Step-by-step explanation:

If the equation is

[tex] y = \dfrac{5}{4}x - \dfrac{7}{4} [/tex]

then the slope is the number multiplying x, so

slope = 5/4.

Answer:

5/4.

The x is a variable, not a multiplication sign.

The equation is

y=mx+b

the slope is the m.

I need help.. >w<
Which answer choice shows 36.95 written in expanded form?
O A) 3 + 6 + 9 + 5
OB) 30 + 6 + 0.9 + 0.5
OC) 30 + 6 + 0.9 + 0.05
OD) 30 + 6 + 0.9 + 0.005

Answers

Answer:

O C)30+6+0.6+0.05 hope this helps

Answer:

C) 30 + 6 + 0.9 + 0.05

Step-by-step explanation:

30. 0.9. 36

+6. +0.05. +00.95

---------. -------------. ---------------

36. 0.95. 36.95

----------. --------------. --------------

36+0.95=36.95

How many 1 / 4 pound hamburgers can be made from 9 / 12 pound of meat?
More questions to come

Answers

Answer: Hi

Step-by-step explanation:

Joanna and Kyle went to store. Joanna bought 2 erasers and 5 pens which altogether cost $17. Kyle
bought 4 erasers and 2 pens which he paid $10 for. Calculate the cost of one eraser and the cost of one
pen.

Answers

Answer: 2x + 3= 9

Step-by-step explanation: hope it's correct well your welcome

Answer:

Erasers are $1 and pens are $3

Step-by-step explanation:

2x+5y=17

4x+2y=10

y=5-2x

2x+5(5-2x)=17

2x+25-10x=17

8x=8

x=1

plug x in and get 3 for Y

Eight more than the quotient of a number and 6 equals 3.

Answers

Hey there!

First of all, the quotient of a number and 6 means you divide that number by 6.

Let the number be x.

Then, eight more means you add 8:

8+(6÷x)=3

That's the answer.

Hope everything is clear.

Let me know if you have any questions!

#LearningDoesn'tEnd

:-)

Answer: -30

Steps:
Create an equation with the given information. (x/6) + 8 = 3

Solve for x by simplifying both sides of the equation, then isolating the variable.

x = -30

°F represents the
The temperature was 13° F. It dropped so that the temperature was o°F
change in temperature,
°F represents the change in temperature.
Write as a fraction

Answers

Step-by-step explanation:

it dropped to Celsius degree

(X+1)²+(x+1)(5x-3) factoriser

Answers

Answer:

Step-by-step explanation:

(x +1)² + (x +1)(5x - 3) = (x +1)(x+1) + (x +1)(5x - 3)

(x +10 is the common term. SO, we can take out (x+1)

=(x +1) [ x + 1 + 5x - 3]

=(x + 1) (x + 5x + 1 - 3) {Combine like terms}

= (x +1)(6x -2)

Plzz answer I will give you brainliest and 17 points

Answers

112,400

divide 140.50 by 10
that equals 14.05
now you know what 1 click costs
multiply that by 8000
that equals 112,400
that is your answer

At book fair, the ratio of adults to children is 7 : 3
The ratio of girls to boys at the book fair is 4 : 1
What percentage of the people at the book fair are boys?

Answers

The percentage of the boys at the book fair is 6%

What is a percentage?

Percentages are used in mathematics as a decimal ratio expressed in a fraction of 100. It is represented with a symbol known as %.

At a book fair, the ratio of adults to children are:

7 : 3

The total number of people at the book fair = 7 + 3 = 10

The percentage of adults are:

[tex]\mathbf{=\dfrac{7}{10}\times 100\%}[/tex]

= 70% are adults

The percentage of children are:

[tex]\mathbf{=\dfrac{3}{10}\times 100\%}[/tex]

= 30% are children

However, if from the children, 4 are girls and 1 is a boy.

The total number of children at the fair = 4 + 1 = 5

The percentage of girls are:

[tex]\mathbf{=\dfrac{4}{5} \times 30\%}[/tex]

= 24%

The percentage of boys at the book fair is:

[tex]\mathbf{=\dfrac{1}{5} \times 30\%}[/tex]

= 6%

Learn more about percentages here:

https://brainly.com/question/24304697

IS THIS RIGHT PLZZ HELP ME !!

Answers

Answer:

The answer would be D.

Step-by-step explanation:

The answer would be D since 3 and -3 are opposite numbers (they are the same distance in units away from 0) and they add up to 0.

Hope this helps :)

Answer: The correct answer is D

Step-by-step explanation:

It’s D because -3 and 3 equal 0.

a circle with radius of 5cm sits inside a 11cm×11cm rectangle

Answers

Answer:

The area of the shaded region is

Step-by-step explanation:

Key Features of Graphs of Functions - Part 1
1. The following statement is false. Highlight the two words that should be
interchanged to make it a true statement.
In a function, every output value corresponds to exactly one input
value.
2 The following graph fails the vertical line test and is not a function.
у
X
leg
Part A Explain how the vertical line test shows that this relation is NOT a
function. Because it has 2 lines interseding
Bart B: Name two points on the graph that show that this relation is NOT a
function. The reason its not a function is because

Answers

Answer:

See below

Step-by-step explanation:

Q1.

In a function, every output value corresponds to exactly one input

value.

The words to be interchanged are underlined. The function as per definition has exactly one output for each input.

Q2.

Part A

Because it has 2 same input value for 2 different output values

Part B

The two points are (4, -2) and (4, 2)

Answer:

below

Step-by-step explanation:

Question 1:

In a function, every output value corresponds to exactly one input value.

The words that should be switched around are "output" and "input". This is because every input should have have only ONE output.

Question 2:

The following graph fails the vertical line test and is not a function. (YES)

Using the vertical line test to test whether the vertical line passes through the graphed function more then once. If it does, its not a function. If it doesn't, it is a function. Sadly, the vertical lines pass the point on two separate occasions which makes it not a function.

Answer:

[tex] 20(\frac{3}{5}x - \frac{1}{4}x) = 20 \times 7 [/tex]

[tex] 4 \times 3x - 5 \times x = 140 [/tex]

[tex] 12x - 5x = 140 [/tex]

[tex] 7x = 140 [/tex]

[tex] x = 20 [/tex]

if the square root of the natural number from 1 to 200 are calculated, the number of whole number will be

Answers

Answer:

first 15 no. only 1,2,3,4,5,6,7,8,9,10,11,12,13,14.

Due to festive season, the price of air tickets increased by 15%. If the price of one ticket was $575 during the festive season, what was its price before the festive season?

answer fast

Answers

The price before the festive season is $488.75

Data;

percentage increase = 15%ticket price = $575The Price before the festive season

To calculate the price before the festive season, we simply need to subtract 15% from $575.

[tex]\frac{15}{100} = \frac{x}{575} \\x = 86.25[/tex]

The increase in the ticket is $86.25., Let's calculate the price before the festive season.

[tex]$575 - 86.25 = 488.75[/tex]

The price before the festive season is $488.75

Learn more on percentage here;

https://brainly.com/question/25545513

#SPJ1

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