Joan

This page lists questions and answers that were posted by visitors named Joan.

Questions

The following questions were asked by visitors named Joan.

-A set of seven scores has a mean of 10. If one of the scores is changed from X=15 to X=1, what will be the new value for the new mean? -A sample of n=8 scores has a mean of M=12. One new score is added to the same and the new mean is found to be M=13. Wh...

17 years ago

A score that is 10 points below the mean corresponds to a z-score of z=-2.00. What is the population standard deviation?

17 years ago

Factorize the following expressions completely. 6x2y3 +18xy + 3x2y2 + 9x y2 – x2 + 8y + 16 64x6 – y6

17 years ago

When computing the gravitation force, how do you know what the direction of the solution?

17 years ago

Consider planet mass of 4.98 E 21 kilograms with a satellite orbitting it at distance of 3.11 E 6 meters from planet's center. Satellite has mass of 369 kilograms. How long (inseconds) does it take the satellite to make one complete orbit around planet. I...

17 years ago

Some students in my class are very reluctant to speak up in class discussion. What ways could I make them talk but not in an imitidating way? What activities could I do to make sure everyone gets a chance to participate in a discussion topic?

17 years ago

How does the faith of Judaism affect the everyday life f a believer?

16 years ago

1. Rewrite sentences using the Passive They’re going to open the sports complex next week. The sports complex... The USA manufacture a lot of sports equipment A lot of sports equipment... They’re building some tennis courts in the park. Some tennis courts...

16 years ago

1. A gas initially at 10 C must be changed to _____ C to triple the pressure. 2. When a student plotted ln [vapor pressure of a gas] vs. inverse Kelvin temperature, she obtained a straight line with a slope equal to -20000 K. According to the Clausius Cla...

16 years ago

What are the philosphical ideals embodied in the Declaration of Independence? Comparisson of the differences and similarites of the Atricles of Confederation and the Consitution? As an indentured servant in MD whoose a major argument of rratification of t...

16 years ago

Could someone please explain the equation which is used for profit?

16 years ago

The cost, in millions of dollars, to remove x%of pollution in a lake modeled by C= 6000/200-2x. What is the cost to removed 75%of the pollutant? I arrived at 120,000,000. Can someone explain this to m and is this the correct answer?

16 years ago

I need to find an example of Inversion/abnormal word order in either "The Crisis" by Thomas Paine, "The Declaration of Independence" or "The Death of a Salesman" and am having trouble understnading what to look for in the readings. Any help?

15 years ago

Hello! Can someone please help me out for this question? The loudness, L, of a sound in decibels can be calculated using the formula L= 10 log(I/ F) where I is the intensity of the sound in watts per square metre and F= 10^ -12 . A singer is performing to...

15 years ago

Is there always a type of hero in literature? Just curiousity.

15 years ago

Can some help me find a site that lists the types of heroes in literature? Specifically Tragic and Anti heroes. No Wiki or anything like that please, I need to be able to cite it for my essay. Thank you!

15 years ago

Anti-hero , antihero, or anti hero? Would these three spellings all be correct?

15 years ago

One card is selected at random from an ordinary set of 52 cards. Find the probability of each of the following events: a spade and a 5 are drawn. a jack is not drawn. Thanks for any help with this.

15 years ago

different ways to come up with 100 - 25 x 4, 10 x 10, etc.

15 years ago

0.3(11x+4) greater than 2.1 -(x+8)

15 years ago

Hello, I am writing a research paper and I am at the conclusion part of it. My teacher gave us instructions to not reword the introduction. Does anyone know of a website where I can learn how to create a strong conclusion and bring all my main ideas back...

15 years ago

Identify at least two arguments in the article. Outline the premises and conclusions of each argument you find. Do the premises sufficiently support the conclusions? Are the arguments either deductively valid or inductively strong, or are they invalid or...

15 years ago

Predict whether the equivalence point of each of the following titrations is below, above, or at pH 7: Pyridine titrated with nitric acid

15 years ago

The housing market in my area has seen a 12% trend downward in the average price. Further, the time to closing appears to have taken more time as compared to 3 years ago. Here are the values for the average time to close for the houses in the area. Mean =...

15 years ago

I have an airplane that has an ignition system that works like this. There are 2 energy producing devices, called magnetos that "fire" the spark plugs, 2 per cylinder. There is a 1 in a 1000 chance that one will fail. What is the chance that one or the ot...

15 years ago

what tool hellps you create a database

15 years ago

How do I find the percent of increase from 19,293 to 19,897?

15 years ago

Calculate the energy in joules and calories required to heat 40.0 silver from 112 degrees to 280 degrees

15 years ago

The Smart Chips compnay specializes in

15 years ago

The Smart Chips Company specializes in developing first-of-its-kind microchips;yet its market share has been hurt by "clone" microchips. The Robbins text outlines requirements for Value Chain Management. In 4-6 paragraphs discuss how you would put these r...

15 years ago

I need help in history. I have to write a 4-5 paragraph essay on world war one, but I need information. Could someone please summarize the main things that happened in world war one? Please don't write an essay, I just need someone to tell me the very imp...

14 years ago

Can you summarize and answer these: •a brief definition of the Second Industrial Revolution •a description of urban life and the problems created by industrialization •measures workers took to improve conditions •technological innovations that improved ur...

14 years ago

Can someone tell me what they think of my answer? 1. As industry spread, the British and German governments initiated reforms to improve workers’ lives. What motivated Bismarck to enact reforms in Germany? What kinds of reforms were enacted in Germany and...

14 years ago

A physics teacher shoots a .30 caliber rifle at a 0.47 kg block of wood. The rifle and wood are mounted on separate carts that sit atop an air track (like a linear air hockey table--ie. frictionless). The 5.7 kg rifle fires a 27 gram bullet at 227 m/s in...

14 years ago

Write four arguments that meet the following criteria: Argument 1: The argument has a false premise, but follows good logic. Argument 2: The argument has true premises, but follows poor logic, leading to a false conclusion. Argument 3: The argument has ei...

14 years ago

Two people are carrying a uniform 788.0 N log through the forest. Bubba is 2.0 m from one end of the log (x), and his partner is 1.1 m from the other end (y). The log is 6.2 m long (z). What weight is Bubba supporting?

14 years ago

Explosives are used to blow a rock apart. The explosion blows the rock into three fragments. Two fragments go off at a 76 degree angle to each other--a 6.2 kg piece at 26.7 m/s and a 5.5 kg piece at 23.3 m/s. Calculate the speed of the third piece, if it...

14 years ago

what unknow liquid with a density of 10g/mi and volume of 10 mi what is the object mass

14 years ago

An electrical motor is designed to operate on 34 V at 1.3 A. How much resistance must be connected in series to this motor, if you wish to plug it in to a 120 V outlet?

14 years ago

Three resistors (14.4 Ω, 21.7 Ω, 14.1 Ω) are connected in parallel across 98 V. What is the total resistance for this circuit? What is the voltage drop across the 21.7 Ω resistor? What current is flowing in the 14.1 Ω resistor? What is the total circuit c...

14 years ago

What current would flow in an ordinary 115 V household circuit, if a 1430 W hair drier and a 1000 W microwave oven were operating simultaneously on this line?How much current would the hair drier and microwave from the previous question draw, if they were...

14 years ago

The function f is continuous on the closed interval [0,2] and has values that are given in the table below x = 0| 1 | 2 ____________ f(x) = 1| k | 2 The equation f(x) = 1/2 must have at least two solutions in the interval [0,2] if K = ? The answer is 0, b...

14 years ago

A pendulum consists of a mass m = 0.12 kg hanging from a flexible string of length L. The string is very thin, very light, and does not stretch. It makes small oscillations, with a period of 0.663 s. What is the oscillation frequency of the pendulum? What...

14 years ago

A simple pendulum suspended in a rocket ship has a period To. Assume that the rocket ship is near the earth in a uniform gravitational field. Determine for each of the following statements whether it is correct or incorrect. If the length of the pendulum...

14 years ago

What are the differences between threats and opportunities in a business organization? Give two examples of each one in detail.

14 years ago

John is listening to a horn. He knows the frequency of the horn is 300 Hz when both he and the horn are at rest. If he hears a pitch of 330 Hz, there are clearly several possibilities. For each of the following statements, indicate whether it is correct o...

14 years ago

A person standing close to a railroad crossing hears the whistle of an approaching train. He notes that the pitch of the whistle drops as the train passes by and moves away from the crossing. The frequency of the approaching whistle is 523 Hz, and drops t...

14 years ago

A hydrogen atom, when vigorously perturbed, can emit light with a frequency of 6.16 × 1014 Hz. When the same light from hydrogen atoms in a distant galaxy is observed on earth, the frequency is 5.21 × 1014 Hz. Calculate the speed at which the galaxy is re...

14 years ago

What is the term in literature that describes a story that appeals to kids and adults, but for different reasons. E.g. the original batman series.

14 years ago

A bomb free of outside forces is traveling north when it explodes into exactly three pieces. (Ignore any gas molecules from the explosion that go off in miscellaneous directions.) One piece continues to travel north, while another moves straight up relati...

14 years ago

Hello everyone, I need help with the following problems. Find the partial derivative of the following: 1) f(X1, X2) = X1^1/2*X2^3/4 2) f(x1,x2,x3) = ln(x1)x2 + 3x3 3) f(x,y) = 3x + 4y 4) f(x,y) = x^1/2 +x/y + y/x Find the maximum of the following function...

14 years ago

How much distilled water must be added to .85% solution Of NaCL to make a 70% solution of NaCl

13 years ago

What are some famous restaurants and hotels in Italy? Could you tell me more about their history?

13 years ago

An astronaut is walking in space and his jetpack runs out of fuel. How can he use his empty pack to get back to the space station?

13 years ago

Air molecules create an upward force that impacts the free fall of objects on the surface of the Earth, differing form the way an object would fall in vacuum. Question: What kind of objects should be used for experimentation if we want to limit the impact...

13 years ago

A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?

12 years ago

how many grams of sucrose must be dissolved in 1.5kg of water ot produce a solution which has a freezing point of -2.40 degrees C?

12 years ago

Hi, I'm not sure if I'm giving the correct answer for this problem. The question states; The values of computers in the years after its purchase date are listed in the following table. Year 0=1500, Year1=1200, Year2=1100,Year3 +1000, Year 4 = 800, Year 5...

12 years ago

Children sled down a 45 m long hill inclined at 26 degrees. At the bottom, the slope levels out. If the coefficient of friction is 0.1, how far do the children slide on the level ground?

12 years ago

1. Consider the functions f(x)=1/(x)+4 and g(x)=2/(x). Graph f and g on the same grid. a) Determine the points of intersection of the two functions. b) Show where f(x)<g(x). c) Solve the equation 1/(x)+4=2(x) to check your answer to part a). d) Solve the...

11 years ago

Find a quadratic function f such that f(1)=3, f(2)=5/2, f(-1)=1 I came out with 3 a+b+c=3, 4a+2b+c=5/2, a-b+c=1. And I know that I should do synthetic division but I am stuck.

11 years ago

The vertex of a graph is (2,-2) is it a minimum, yes or no?

11 years ago

calculate the mass of carbon dioxide that would be produced when one gas of tank of gasoline (use octane) is burned in the air. assume an 80 liter gas tank and 0.703 g/ml as the density of octane

11 years ago

If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours? A) About 25% B) About 50% C) About 75% D) About 68%

11 years ago

A gardener has 120 ft of fencing to fence in a rectangular garden. one side of the garden is bordered by a river and so it does not need any fencing. 1. what dimensions would guarantee a garden with an area of 1350 ft^2? 2. What dimensions would guarantee...

11 years ago

find the domain, range, y and x-intercept, vertical asymptote, maximum, minimum, one-to-one, and horizontal asymptote of: a. f(x)=x^2-6x+5 b. f(x)=x^2-6x+5 on domain [-1,6]

11 years ago

The quick plumbing supply sells a set of faucets for $79.95. if a 45% markup based on cost was used, what was the cost of the faucets to quick plumbing?

11 years ago

Dylan's Bicycle Shop offers a new bicycle on sale for $259.92 after a 10% markdown. What was the cost of the bicycle to Dylan if the markup was 30% based on the cost? Round

11 years ago

Treadmill, cost is x, amount of markup $880.00, selling price of $2,335.00, what is percent markup based on cost?

11 years ago

How much energy(in calories)would it take to heat 13g of water 2 degrees Celsius?? 1.00cal/1g C = 13 x 2 = 26 Calories Is that right?

11 years ago

T-Riffic T shirts for a $20 design fee plus $8 charge per shirt printed, what is the algebraic rule?

11 years ago

A crane is lowering two boxes downward at a constant velocity. The cable from the crane is attached directly to the upper box, m1, which has a mass of 95kg and a second cable hanging from the upper box supports the lower box, m2, which has a mass of 140kg...

10 years ago

How do you calculate the horizontal velocity of an object in a projectile problem?

10 years ago

A particle moving along the x-axis has its velocity described by the function v =2t squared m/s, where t is in s. Its initial position is x = 2.8m at t = 0 s. At 2.7s , what is the particle's position?

10 years ago

How many arrangements are possible using the letters in the word FUZZY if each letter "Z" is distinctly different than the other? How many arrangements are possible if the letter "Z" is interchangeabe with the other? Explain your reasoning.

10 years ago

8. An open systems perspective places great significance on understanding the relationship between an organization and its __________. (Points : 1) personnel practices. internal resources. chain of command. capital structure. environment.

10 years ago

Does this verbal phrase translate into the algebraic expression correctly? Five more than a number divided by four x/4+5

10 years ago

Pick which group of word below is a run-on sentence: A) Don't run around. B) After the store don't run around. C) After the store.

9 years ago

Which is the group of words is a fragments sentence: A) After the store don't run around. B)After the store. C) Don't run around.

9 years ago

The region R bounded by y=e^-x and y=0 and lying to the right x=0 is rotated about the y-axis

9 years ago

. Two cards are drawn at random, without replacement, from a standard 52-card deck. Find the probability that: (a) both cards are the same color (b) the first card is a face card and the second card is black

9 years ago

In a certain Math class, the probabilities have been empirically determined for various numbers of absentees on any given day. These values are shown in the table below. Find the expected number of absentees in a given day. Number of absentees, x 0 1 2 3...

9 years ago

I need some help with this please. Find the height of a triangle where area=14 and base=4

9 years ago

How do you write the equation for this: Five less than twice a number is one.

9 years ago

Some people of ancient times used cubits.

9 years ago

I have a 76 average in the class. We have one more test, and tests are weighted at 60%. What grade do I need to get to an 80?

8 years ago

Questions from Andreas Software Business A. How many software programs should Andrea sell to make the most profit? __________ What would her profit be? ___________ What is the marginal revenue for this number of programs? ____________ The marginal cost? _...

8 years ago

the monthly demand for a certain product is a normal random variable with a mean of 50 and standard deviation 10 a) if you have 60 units on a stock at the beginning of the month, what is the probability you will still have stock remaining at the end of th...

8 years ago

First Bank charges $4.50 per month for a basic checking account plus $0.15 for each check written. Citizen's Bank charges a flat fee of $9. How many checks would you have to write each month in order for the cost to be the same at both banks?

8 years ago

Huan is redesigning his bedroom, which is the shape of a rectangle. a Huan knows the area of his bedroom is 180 square feet. What are all the possible whole number dimensions of Huan’s bedroom?

8 years ago

I'm dead. I'm in a room with 2 doors. One goes to heaven the other goes to Hell. Infront of each door stands a man. One man can only tell the truth. The other can only tell lies. What question do I ask to get to heaven

7 years ago

You are dead. In a room with two doors. One leads to heaven. One leads to Hell. Infront of each door stands a man. One man tells only the truth. The other only tells lies. You have one question to ask one of the men. What would that question be and to whi...

7 years ago

Who makes it has no need for it. Who buys it has no use for it.who usesitcan neither see it or feel it. What is it?

7 years ago

What come once in a moment, twice in a minute and never in a thousand years?

7 years ago

What is the estimate of 3 5/6

7 years ago

DESCRIBE THE CURRENT POLITICAL ISSUES DISCUSSED IN THE MEDIA OR NEWS OVE JANUARY AND FEBRUARY 2018

7 years ago

imagine you & your friend entered a raffle. you bought 10 tickets and your friend bought 20 tickets. there were a total of 300 tickets sold for the raffle what is the probability of you or your friend winning?

7 years ago

A plane's average speed between two cities is 600 km/hr, if the trip takes 25hrs,how far does the plane fly?

6 years ago

an airplane flew from a city x on a bearing 225 to another city y a distance 200 km away.It then flew from city y on a bearing of N30 W to city Z a distance of 250 km. calculate 1.the distance from city x to city z correct to the nearest whole number. 2....

6 years ago

AN OPEN BOX IS TO BE MADE FROM A CARDBOARD 20 INCHES BY 14 INCHES, BY CUTTING A SQUARE FROM EACH CORNER AND FOLDING UP THE SIDES. FIND THE DIMENSIONS OF THE BOX THAT WILL MAXIMIZE THE VOLUME OF THE BOX

5 years ago

Answers

The following answers were posted by visitors named Joan.

I cannot get to the website. Can you show me how to approach this problem?

16 years ago

Sorry, As an indentured servant in Maryland choose one major argument for ratification of the constitution that you would support and one that you would not support.

16 years ago

What does the 'M' in "0.204 M" stand for?

15 years ago

I don't know how to answer the questions provided for the article. I was wondering if I could get help with the answers. My brain is fried and I am having trouble finding two arguments to outline the premises and conclusions, finding if they are deductive...

15 years ago

first argument and premise: the reaction was irrational. conclusion: spreading fear and thus disrupting lives? second argument and premise: Americans unwittingly cooperated with the terrorists. conclusion: achieving a major goal?

15 years ago

i don't know. this is too much to comprehend and i still haven't been able to grasp it in my class. thank you for your help though. i appreciate it

15 years ago

i have tried comprehending the reading material but for some reason i just don't get it. ive been working on my paper for my other class and havent been able to complete this assignment. i know i cant get the answers for the assignment, but ive made the m...

15 years ago

this is during the second industrial revolution by the way

14 years ago

I meant 0.85% and 0.70% ...sorry

13 years ago

Revise an explanation to eliminate density. Read the following dense paragraph and revise it to make it more coherent. You may separate the material into shorter paragraphs, use lists, and add or delete material. This information was part of a memo inform...

13 years ago

Where do I find a Word Processor program in MLA format?

12 years ago

B. Dangerous. The Dangerous equipment in the mills was unsafe for the workers, yet small children were forced to climb around and under it every day. It makes sense :) Have a great day!

12 years ago

I would say C. Outrage. Mother Jones was outraged that the owners wouldn't say anything about child labor because the mill owners controlled stock in their newspaper. Therefore, she decided to act on her outrage to get them a little publicity. Being enthu...

12 years ago

Sorry but i forgot to pose what subject it was.

11 years ago

It is $35.98

11 years ago

When you have type 1 diabetes your body does not produce enough insulin. You have to eat correctly to maintain insulin levels. So if your heavy, you have to eat properly and loose weight. If your not use to eating properly, you will feel as if you are sta...

11 years ago

55.13

11 years ago

High blood pressure and Diabetes

11 years ago

$272.49 = ( 1- .35) x $272.49 / 0.65 = $419.22 rounded

It's weird because I'm only give 25m and 5m in this problem. It looks like this kinda | | 5m | |_________________ 25m I'm suppose to find the horizontal velocity with this

10 years ago

Eaquator

10 years ago

Why is it none of them? My answer is B.is it okay to choose as a run-on sentence?

9 years ago

Which group of words below is the predicate of the sentence: The quarterback threw the ball down the field. A)The quarterback threw B) Threw the ball down the field C) ball down the field D)down the field

9 years ago

multiply and put in simpliest form 5/7 * 3/13

9 years ago

Everything

8 years ago

to estimate p, the proportion of all newborn babies who are male, the gender of 10,000 newborn babies was noted. if 5106 were male determine a) a 90 percent confidence interval estimate of p b) a 99 percent confidence interval estimate of p?

8 years ago

I didn’t know the exact answer

8 years ago

which side is it skewed to?

7 years ago

THANKS

7 years ago

Funtions of the kabaka

6 years ago

Calculations on it

5 years ago

Calculations on this question

5 years ago

I don't know please teach me

The answer is Pb(s)|PbCl2(s)|Cl-(aq)Cl-(aq)|AgCl(s)|Ag(s)

4 years ago

Please help me answer these

3 years ago

A man walks 10 km West, gets some rest, and continues for another 7 km in the same direction

3 years ago

9 gallons

3 years ago

M=2,3,5,7=2357. N =4,9=94 .2357-94=2263. 2263=31,73 are the prime factors

3 years ago

it is the process of taking in an extra allowance on a pattern

3 years ago