Find the slope of the line.

Find The Slope Of The Line.

Answers

Answer 1

The slope of the line is 5/7. So, option B is correct.

What is meant by slope?

In mathematics, a line's slope or gradient is a number that specifies both its direction and its steepness. There is no obvious answer to why the letter m is used for slope, although its first use in English is in O'Brien (1844), who wrote the equation of a straight line .

The slope of a line is found by dividing the "vertical change" by the "horizontal change" between (any) two distinct places on the line. The ratio is sometimes stated as a quotient ("rise over run"), yielding the same value each time.

The points of the line on the graph are:

A(3,1), B(-4, 4)

Slope=(y₂-y₁)/(x₂-x₁)

=(-4-1)/(-4-3)

= -5/-7

=5/7

Therefore, the lines slope is 5/7

Hence option A is correct.

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Related Questions

Select the values that make the inequality h<3h<3 true. (Numbers written in order from least to greatest going across.) -5 -2 0 2 2.9 2.99 2.999 3 3.001 3.01 3.1 4 6 8 11

Answers

The values that make the inequality, h < 3h < 3, true are the values of h in the range 0 < h < 1. The values -5, -2, 0, 2, 2.9, 2.99, 2.999, 3, 3.001, 3.01, 3.1, 4, 6, 8, 11, are larger or smaller than the values make the inequality true.

What is an inequality in mathematics?

An is a comparison between two expressions, using non equal expressions, such as ≥, >, ≠,  <, or ≤ symbols.

The specified inequality is; h < 3·h < 3

When h < 3·h, we get;

h is a positive number larger than 0, such that we get;

When h < 0, 3·h < h

Therefore; h > 0

The inequality, 3·h < 3, indicates;

3·h < 3

h < 3/3 = 1

h < 1

Which indicates that we get;

0 < h < 1

Therefore, non of the values make the inequality, h < 3·h < 3

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What is the sum of the infinite geometric series?

Answers

first of all, let's find the common ratio in this geometric sequence, by simply dividing a any of the terms by the term right behind it, hmmm say -12 and 16

[tex]16~~,~~-12~~,~~9~~,~~-\cfrac{27}{4}~\hfill \stackrel{\textit{\LARGE common ratio}}{\cfrac{-12}{16}\implies -\cfrac{3}{4}} \\\\[-0.35em] ~\dotfill\\\\ \qquad \qquad \textit{sum of an infinite geometric sequence} \\\\ \displaystyle S=\sum\limits_{i=0}^{\infty}\ a_1\cdot r^i\implies S=\cfrac{a_1}{1-r}\quad \begin{cases} a_1=\textit{first term}\\ r=\textit{common ratio}\\ \qquad -1 < r < 1\\[-0.5em] \hrulefill\\ a_1=16\\[1em] r=-\frac{3}{4} \end{cases}[/tex]

[tex]S=\cfrac{16}{ ~~ 1-\left( -\frac{3}{4} \right) ~~ }\implies S=\cfrac{16}{ ~~ 1 + \frac{3}{4} ~~ }\implies S=\cfrac{16}{~~ \frac{ 7}{ 4} ~~}\implies S=\cfrac{64}{7}[/tex]

A tennis ball is a sphere with a radius of 1.56 inches. A squash ball is also
a sphere with a radius of 0.78 inches. Select all the true statements.

The volume of the tennis ball is exactly 2 times the volume of the squash
ball.

The volume of the tennis ball is approximately 3 times the volume of the
squash ball.

The volume of both the tennis ball and squash ball is proportionate to the
scale factor of the radii.

The scale factor of the volume of the tennis ball to the volume of the
squash ball is approximately 8.

The volume of the tennis ball is 5.067 cubic inches and the volume of the
squash ball is about 0.63 cubic inches.

Answers

The two true statements about these are,

The volume of both the tennis ball and squash ball is proportionate to the

the scale factor of the radii.

The scale factor of the volume of the tennis ball to the volume of the

squash ball is approximately 8.


What is a sphere?

In geometry, a sphere is a three-dimensional solid figure, which is round in shape.

The surface area is 4πr².

The volume is (4/3)πr³.

The diameter is 2×radius of the sphere.

Given, A tennis ball is a sphere with a radius of 1.56 inches. A squash ball is also a sphere with a radius of 0.78 inches.

So, The volume of the tennis ball is (4/3)π(1.56)³ = 16 cubic inches.

The volume of the squash ball is (4/3)π(0.78)³ = 2 cubic inches.

The volume of both the tennis ball and squash ball is proportionate to the

the scale factor of the radii.

The scale factor of the volume of the tennis ball to the volume of the

squash ball is approximately 8.

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A. Ue Pythagora’ Theorem to find the altitude of the triangle hown. B. Write the trigonometric ratio for a 60° angle. C. Write the trigonometric ratio for a 30° angle

Answers

The Trigonometric ratios are:

P/H = Sinθ

B/H = Cosθ

P/B = Tanθ

H/P = Cosecθ

H/B = Secθ

B/P = Cotθ

Where,

'P' represents the perpendicular

'B' represents the base

'H' = represents the hypotenuse

P/H = Sinθ

B/H = Cosθ

P/B = Tanθ

A. As the values of p, b or h are not given.

Pythagoras Theorem states that:

h² = p² + b² or h = [tex]\sqrt{p^2 + b^2}[/tex]

Altitude of a triangle is usually given by the perpendicular,

So,

h² = p² + b²

h² - b² = p²

p² = h² - b²

p  = [tex]\sqrt{h^2 - b^2}[/tex]

B. The trigonometric ratios for θ = 60°

Sin 60 = √3/2

Cos 60 = 1/2

Tan 60 = √3

C. The trigonometric ratios for θ = 30°

Sin 30 = 1/2

Cos 30 = √3/2

Tan 30 = 1/√3

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Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons of gas in the car and drives it until it runs out of gas. He conducts this experiment 15 times on each car and records the number of miles driven.

Sample Mean car 1: 250.3 mi/ 10 gal
Sample mean car 2: 246.1 mi/10 gal

Question: Find the medians for Car 2 and Car 2

Answers

Answers in bold

Median of car 1:  249

Median of car 2:  251

====================================================

Explanation:

This is the data set for car 1

[tex]\begin{array}{|c|c|c|c|c|} \cline{1-5}202 & 247 & 241 & 223 & 246\\\cline{1-5}253 & 271 & 241 & 291 & 249\\\cline{1-5}259 & 257 & 261 & 246 & 268\\\cline{1-5}\end{array}[/tex]

Which when written out as a single long line, we have this:

202, 247, 241, 223, 246, 253, 271, 241, 291, 249, 259, 257, 261, 246, 268

Sort those values from smallest to largest to get this set

202, 223, 241, 241, 246, 246, 247, 249, 253, 257, 259, 261, 268, 271, 291

There are n = 15 items in that set.

n/2 = 15/2 = 7.5 which rounds to 8

The middle-most item, aka median, is in slot 8.

There are 7 items below the median, and 7 items above it. Giving us 7+1+7 = 15 items total.

Start at "202" and count 8 slots to the right until you arrive at 249 which is the median of the car 1 data set. Make sure you are looking at the sorted data set.

Follow similar steps for the car 2 data set. You should get 251 as the median of the car 2 data set.

show that if f is a function from s to t, where s and t are finite sets with |s| > |t|, then there are elements s1 and s2 in s such that f(s1)

Answers

T|=|S|⟹ there is bijection F:S→T.

What are bijection function?

A bijection is a function between the elements of two sets in mathematics that is also referred to as a one-to-one correspondence, an invertible function, or a bijective function.

In this function, each element of one set is paired with exactly one element of the other set, and each element of the second set is paired with exactly one element of the first set.

No elements are left unpaired. A one-to-one (injective) and onto (surjective) mapping of a set X to a set Y is known as a bijective function, or f: X Y in mathematics.

One-to-one function (an injective function; a bijection from the set X to the set Y has an inverse function from Y to X) should not be confused with one-to-one correspondence. X and Y must be finite if.

According to our question-

The function f:ST |S||T| has an injective and not a surjective nature.

Assume an injective function exists: g:TS|T||S|. |T|=|S|

(this follow from the Cantor-Bernstein theorem).

|T|=|S|⟹ F:S:T has a bijection.

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If f(x) = 4x² - x - 3, then what is the remainder when f(x) is divided by
x - 3?

Answers

Answer:

30

Step-by-step explanation:

Solve for f by simplifying both sides of the equation, then isolating the variable. It is pretty much like what we do with the normal equation.

Answer:

remainder = 30

Step-by-step explanation:

given f(x) divided by (x - h) then the remainder is f(h)

f(x) is divided by (x - 3) then remainder is f(3)

f(3) = 4(3)² - 3 - 3 = 4(9) - 6 = 36 - 6 = 30

FILL IN THE BLANK. reducing pest populations to a level where their effects are tolerable or acceptable is termed ___

Answers

suppression

prevention - keeping a pest from becoming a problem. suppression - reducing pest numbers or damage to an acceptable level, and . eradication - destroying an entire pest population.

How can we manage the population pest?

In the field, there are three main approaches to biological control: Natural enemy conservation, the introduction of new natural enemies, and the establishment of a stable population are referred to as "classical biological control." Bulk raising and periodic release, whether on a seasonal or inundative basis, are the other two methods.

What are the elements that influence the expansion of the pest population?

In general, heat, humidity levels, light quality or quantity, wind, or any combination of these elements affect all important life stages of insect pests, diseases, and weeds (survival, reproduction, and dissemination).

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reducing pest populations to a level where their effects are tolerable or acceptable is termed suppression.

Prevention is the process of preventing a pest from becoming a problem. Suppression is the process of reducing pest numbers or damage to an acceptable level, and Eradication is the destruction of an entire pest population.

How can we control the pest population?

There are three main approaches to biological control in the field: "Classical biological control" refers to the conservation of natural enemies, the introduction of new natural enemies, and the establishment of a stable population. The other two methods are bulk raising and periodic release, whether seasonal or inundative.

What factors influence the expansion of the pest population?

In general, heat, humidity, light quality or quantity, wind, or any combination of these elements affect all important life stages of insect pests, diseases, and weeds (survival, reproduction, and dissemination).

reducing pest populations to a level where their effects are tolerable or acceptable is termed suppression.

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If the bag of fertilizer cost $11.75 what is the cost of nitrogen per pound?

Answers

Answer: 40 cents

Step-by-step explanation: Cost per lb of N in 1 ton of 28% UAN = $225 ÷ 560 lbs N = 40 cents per lb N.

a 36 year old woman on chronic cyclosporine treatment for bilateral lung transplantation visits the emergency department complaining of extreme headache, nausea and vomiting. her exam is notable for bp 239/165, normal cardiac exam, bibasilar pulmonary rales, and 1 lower extremity edema. ekg showed asymmetric inverted t-waves in i, avl, and v4-6. in an effort to acutely control her blood pressure, which of the following is true?

Answers

The best treatment for this patient's acute blood pressure control is to administer an intravenous (IV) antihypertensive medication such as labetalol or nitroprusside. Additionally, it is important to assess for underlying causes of her elevated blood pressure such as infection, kidney disease, or heart failure.

What is blood pressure?
Blood pressure
(BP) is indeed the force exerted by moving blood against blood vessel walls. The heart's action of trying to pump blood through the blood vessels is largely responsible for this pressure. The pressure in the major arteries is meant when the term "blood pressure" is used without qualification. Systolic pressure, or the highest pressure during one heartbeat, is typically expressed as the ratio of diastolic pressure, or the lowest pressure between two heartbeats, in blood pressure measurements. It is expressed as a millimetre of mercury (mmHg) just above atmospheric pressure in the immediate vicinity. Along with respiratory rate, pulse rate, oxygen levels, and body temperature, blood pressure is among the vital signs that medical professionals consider when assessing a patient's health.

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What is the answer?? please and thank you

Answers

Answer:

the answer is no

Step-by-step explanation:

7. A tour guide charges $28 to take four people on a tour. How much does the tour guide charge per person?​

Answers

Answer: $7

Step-by-step explanation:

We know that $28 for four people.

So we take 28 divided by 4 and we get $7 per people

О
A
13x + 13
7x+7
60°
с
B

Answers

Answer:

x = 9

Step-by-step explanation:

(7x + 7) + 60 = 13x + 13 (exterior angle)

7x + 67 = 13x + 13

6x = 54

x = 9


7. Sally's Summer Punch recipe is a combination of lemonade and fruit punch: Sally uses 3 cups
of lemonade for every 4 cups of fruit punch. In order to make a batch for the Fourth of July
party, Sally uses 21 cups of lemonade. How many cups of fruit punch will Sally use?

LEMONADE |————————————|—>
3 CUPS

FRUIT PUNCH |———————————|—->
4 CUPS

Answers

The cups of fruit punch that Sally will use is 28 cups.

How many cups of fruit punch will Sally use?

Ratio demonstrates how many times one number can fit into another number. Ratios contrast two numbers by ordinarily dividing them. A/B will be the formula if one is comparing one data point (A) to another data point (B). This indicates that you're dividing information A by B.

In this situation, Sally's Summer Punch recipe is a combination of lemonade and fruit punch: Sally uses 3 cups of lemonade for every 4 cups of fruit punch.

When Sally uses 21 cups of lemonade, the cups of fruit punch she will use will be:

3/4 = 21/x

3x = 21 × 4

3x = 84

x = 84/3

x = 28

The cups is 28 cups.

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Solve the inequality. 2x + 13 < 35

Answers

Answer:

x < 11

Step-by-step explanation:

there you go :)

Can someone please help me

Answers

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

The expressions that are simplified are:

[tex]n^{4}[/tex]

[tex]\frac{1}{n^{-5}}[/tex]

[tex]\frac{1}{n^3}[/tex]

Options A, B, and E are the correct answer.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

[tex]n^{4}[/tex]

This is already simplified.

[tex]\frac{1}{n^{-5}}[/tex]

This is already simplified.

[tex]n^6 . n^{-8}[/tex]

= [tex]n^{6 - 8}[/tex]

= [tex]n^{-2}[/tex]

[tex]n^7 . p^8[/tex]

= [tex]n^{7 + 8}[/tex]

= [tex]n^{15}[/tex]

[tex]\frac{1}{n^3}[/tex]

This is already in simplified form.

Thus,

The expressions that are simplified are:

[tex]n^{4}[/tex]

[tex]\frac{1}{n^{-5}}[/tex]

[tex]\frac{1}{n^3}[/tex]

Options A, B, and E are the correct answer.

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Please Help me With this ASAP (20 Points)

Answers

Answer:

200*1-0.95-0.95+0.9025

200*1-1.9+0.9025

200*0.0025

0.5

At a football stadium, 5% of the fans in attendance were teenagers. If there were 340 teenagers at the football stadium, what was the total number of people at the stadium?.

Answers

The total number of people at the stadium was 6800 people .

A Percent in mathematics is defined as a number or ratio that is expressed as a fraction of 100 , it is denoted by sign "%" .

For Example : 2% is = 2/100   .

In the question ,

it is given that ,

percent of teenagers fans in the stadium is = 5%

number of teenagers present at the football stadium is = 340

which means 5% represents 340 people ,

So , 1% will be 340/5 = 68 people .

the total percent of people present in the stadium is = 100% ,

multiplying both sides by 100 ,

we get ,

So , 100%  = 68 × 100 = 6800 people

Therefore , The total attendance at the football stadium was 6800 people .

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-7(8x + 5) = 5x+10
Solve for x simplify
(No solution, Infinitely many solutions, One solution)

Answers

The equation -7(8x + 5) = 5x+10 has one solution of x which satisfies the equation. The solution is x = -45/61.

What is solution of system of equation?

A solution to a system of equations is a set of values for the variable that satisfy all the equations simultaneously. In order to solve a system of equations, one must find all the sets of values of the variables that constitutes solutions of the system.

According to the given question:

Given equations is -7(8x + 5) = 5x+10

Simplifying both sides to get value of x

-7(8x + 5) = 5x+10

-56x - 35 = 5x + 10

-61x = 45

x = -45/61

Therefore x has one solution which is -45/61

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PLEASE HELP ME
What is the y-intercept of this line?
I keep getting confused someone please help me and explain it better to me

Answers

Answer:

2

Step-by-step explanation:

The y-intercept is the point at which the graph crosses the y-axis.

(I have marked it in blue on the attached graph).

From inspection of the given graph, the line crosses the y-axis at point (0, 2). So the y-intercept is 2.

evaluate the sum of 4.2 and 466.99​

Answers

The sum of decimals 4.2 and 466.99​ evaluates to 471.19

How to evaluate the sum of decimals?

Decimals are numbers that consist of two parts namely, a whole number part and a fractional part separated by a decimal point e.g 2.35

Given:  4.2 and 466.99​

To evaluate the sum of 4.2 and 466.99​, you simply need to add the two numbers. Arrange the numbers as shown below and add as you would add other numbers.

    4.2

466.99

.................

  471.19

................

Therefore, the sum 4.2 and 466.99​ is  471.19

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A store is having a 12-hour sale. The total number of shoppers who have entered the store thours after it begins is modeled by the function S defined by [tex]S(t)=0.5 t^4-16 t^3+144 t^2[/tex] for [tex]0 \leq t \leq 12[/tex]. At time [tex]t=0[/tex], when the sale begins, there are no shoppers in the store. The rate at which shopper's leave the store, measured in shoppers per hour, is modeled by the function [tex]L[/tex] defined by [tex]L(t)=-80+\frac{4400}{t^2-14 t+55}[/tex] for [tex]0 \leq t \leq 12[/tex]. According to the model, how many shoppers are in the store at the end of the sale (time [tex]t=12[/tex] )? Give your answer to the nearest whole number.

Answers

At the end of the sale, there were a total of 196 customers in the store for the given function.

What is a function?

The earliest known attempt to the notion of function may be traced back to works of Persian mathematicians Al-Biruni and Sharaf al-Din al-Tusi. Functions were initially the idealization of how a variable quantity depended on another quantity.

The total number of shoppers in the store is the number of shoppers present at the start of the sale Plus the number of shoppers who entered the store minus the number of shoppers who left.

Given that there were no shoppers in the store before the sale began, the number of shoppers in the store at the start of the sale is 0.

It is assumed that the number of customers who have entered the store is represented by S(t)=0.5t⁴-16t³+144t².

So, at t=12, the number of shoppers in the store is S(12)=

0.5(12)⁴-16(12)³+144(12)²

S(12)=3456 shoppers.

L(t)= -80+(4400/t²-14t+55)

At t=12,

[tex]\int\limits^{12}_0 {L(t)} \, dt[/tex]=[tex]\int\limits^{12}_0[/tex]( -80+(4400/t²-14t+55))dt

At the end of the sale, there were a total of 196 customers in the store.

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The ale tax on a car that old for $13,500 i $910. At thi rate, how much higher i the tax on a car that ell for $16,500

Answers

The tax on a car that sells for $16,500 at the rate of  6.7%  is $195.5 higher.

What is the percentage?

A percentage is a figure or ratio stated as a fraction of 100 in mathematics. Although the abbreviations "pct.", "pct.", and occasionally "pc" are also used, the percent symbol, "%," is frequently used to indicate it. A % is a number without dimensions and without a standard measurement.

We have,

First car price is  =  $13,500

and tax of the first car is = $910

Second car price is  =  $16,500

and tax of the second car is = ?

so,

 $13,500 -----    100,

  $910      -----    x

x = 910 * 100 / 13500

x =  6.7

therefore, the rate of tax is 6.7%

so, we will calculate the tax for the second car,

$16,500 -----    100,

    y        -----    6.7

y = 6.7 * 16,500 / 100

y = $1105.5

difference of tax price between two cars = $1105.5 - $910 = $195.5

Hence, the tax on a car that sells for $16,500 at the rate of  6.7%  is $195.5 higher.

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An electronic manufacturer determine that the profit P (in dollar) obtained by producing x unit of a DVD player and y unit of a DVD recorder i approximated by the model P(x, y) = 8x 10y − (0. 001)(x2 xy y2) − 10, 000. Find the production level that a maximum profit. What i the maximum profit?

Answers

The production level that a maximum profit is   186000 and the maximum profit will at the points of (200, -4000) , under the concept of absolute maximum value.

The  P(x, y) = 8x+ 10y − (0. 001)(x²+ xy+ y²) − 10, 000, the first partial differentiate  of the  given equation with respect to x and  y,

Px= ( 8x+ 10y − (0. 001)(x²+ xy+ y²) − 10, 000) = 8-0.001(2x-y) ....2

Py= 8x+ 10y − (0. 001)(x2+ xy+ y2) − 10, 000)  = 10-0.001(x-2y) ... 3

Considering the above  equation to  be equal to  zero  :

=>8-0.001(2x-y) =0 =>0.001(2x-y) =8 .....4

=>10-0.001(x-2y) =0 =>0.001(x-2y) =  10 ...5

Solving the equations 4 and 5 we get the lues of x and  y  we get are :

x= 2000, and y = -4000 , Now the partial differentiate for the equations 2  ad 3  are with respect to x and y :

pxx(x,y)=-0.002

pyy(x,y)=  0.002

pxy(x,y) =-1

The discriminant of the function wil  be  at (2000,-4000):

D = 0.002*-0.002 -(-1)^2 =-1.0004 ,here D <0,  so the  critical values (200, -4000) reaches the maximum value .So the  production level will be :

P(2000, -4000) = 8x+ 10y − (0. 001)(x2+ xy+ y2) − 10, 000 = 186000

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The F distribution's curve is positively skewed.
T/F

Answers

Answer: True

Step-by-step explanation:

-The f-distribution curve is positively skewed towards the right with a range of 0 and ∞

The value of F is always positive or zero. It never has negative values.

If Jodie works on the computer for 6 hours every 2 days how many hours will she work on the computer in 14 days?

Answers

[tex]\begin{array}{ccll} hours&days\\ \cline{1-2} 6 & 2\\ x& 14 \end{array} \implies \cfrac{6}{x}~~=~~\cfrac{2}{14} \implies \cfrac{6}{x}=\cfrac{1}{7}\implies 42=x[/tex]

Answer:  42 hours

add 6 every 2 days

eighty-seven and seven hundred twenty-eight thousandths in  Decimal form help plssss

Answers

Eighty-seven and Seven hundred twenty-eight thousandths in decimal form is 87.728.

How to change in decimal form?

Given the unclear wording, there are various ways to respond to this question, depending on exactly what you mean.The answer is 338.14 if you meant "three hundred and thirty-eight and seven hundred divided by five thousand."The answer is 338.705 if you mean "three hundred and thirty eight and seven hundred five divided by one thousand."The two solutions are 0.0676 and 0.14 if you meant "three hundred thirty eight divided by five thousand AND seven hundred divided by five thousand."

Eighty-seven and Seven hundred twenty-eight thousandths in decimal form:

= 87 + 728/1000

= 87 + 0.728

= 87.728

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Find only the margin of error to construct a 98% confidence interval for p1 - P2. Assume the samples are random and independent. Do not construct a confidence interval. Sample statistics: nâ = 1000, x1 = 250, and n2 = 1200, x2 = 195

Answers

The required margin of error construct a 98% confidence interval for p1 - P2 is 0.0403.

What is margin of error?

Margin of errors, in statistics, is the level of blunder in results got from irregular examining overviews. A higher wiggle room in measurements shows less probability of depending on the consequences of a review or survey, for example the certainty on the outcomes will be lower to address a populace.

According to question:

given data

 n1 =1 000   x1 = 250

pˆ1 = x1n1 = 2501000 = 0.250

n2 = 1200    x2 = 195

pˆ2 = x2n2 = 1951200 = 0.1625

We have given confidence interval ,

98% ci for p1−p2.

Then,

α = 1 - 0.98 = 0.02

[tex]Z_{\alpha /2}[/tex] = [tex]Z_{0.01}[/tex] = 2.326

Again,

E = [tex]Z\sqrt{\frac{p1(1-p1)}{n1}+ \frac{p2(1-p2)}{n2} }[/tex]

E = [tex]2.326\sqrt{\frac{0.250(1-0.250)}{1000}+ \frac{0.1625(1-0.1625)}{1200} }[/tex]

E = 0.0403

Thus, required margin of error is 0.0403.

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the vertices of a triangle are p(-2, -4), q(2, -5) and r(-1, -8). name the vertices of the triangle after arefelction over the y-axis

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The vertices of the triangle after reflection over the y - axis are  P'(2,-4) , Q'(-2 , -5) and R'(1 , -8)  .

In the question ,

it is given that ,

the vertices of the triangle PQR are P(-2, -4), Q(2, -5) and R(-1, -8),

we have to write the coordinates after reflection over y axis .

we know that the coordinate (x,y) after reflection over y axis become (-x,y).

So , the coordinate P(-2 , -4) after reflection is P'(2,-4) .

the point Q(2,-5) becomes Q'(-2 , -5) .

the vertex R(-1 , -8) becomes R'(1 , -8) .

Therefore , the vertices of the reflected triangle are P'(2,-4) , Q'(-2 , -5) and R'(1 , -8) .

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On a number line, point d is at -6, and point e is at 8. point f lies between points d and e. if is , where does point f lie on the number line? point f is at on the number line.

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The point F lies on 4.5 in the number line.

What is the number line?

The number line is a One dimensional representation of point referring by a number only.

We know that if a point divides a line joining the points at x, y in the number line respectively in m:n ratio then that point lies on

= (my+nx)/(m+n) in the number line.

Here in the given problem that,

Point D lies on -6 in the number lin

Point E lies on 8 in the number line

And F lies between D and E points and DE:EF = 3:1

So the point F clearly divides the staright line DE joining the point D at -6 and E at 8 in 3:1 ratio.

So the point F lies on = (1*(-6)+3*8)/(3+1) = (-6+24)/4 = 18/4 = 4.5

Hence, the point F lies on 4.5 in the number line.

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