Wednesday

December 7, 2016
Total # Posts: 2,662

**Statistics (Math 210)**

Hi there, I am doing my statistics homework and am having trouble with a few problems. I sincerely appreciate any help I receive! :) According to a local chamber of commerce, in 1993, 5.9% of local area residents owned more than five cars. A local car dealer claims that the ...

*December 4, 2016*

**Statistics (Math 210)**

Hi there, I am doing my statistics homework and am having trouble with a few problems. I sincerely appreciate any help I receive! :) A manufacturer claims the standard deviation of salt in their meat is .5. An SRS of 18 samples shows the standard deviation (s)= .62 (alpha = ....

*December 4, 2016*

**Statistics (Math 210)**

Hi there, I am doing my statistics homework and am having trouble with a few problems. I sincerely appreciate any help I receive! :) A manufacturer claims that the mean lifetime of its lithium batteries if 1200 hours. A homeowner selects 25 of there batteries and finds the ...

*December 4, 2016*

**Math**

Two debts ---- the first of $800 due six months ago and the second of $1400 borrowed one year ago for a term of three years at 6.5% compounded annually ---- are to be replaced by a single payment one year from now. Determine the size of the replacement payment if interest is 7...

*December 3, 2016*

**Math**

The sum of 24 and Vanessa's age is 40

*November 22, 2016*

**Stats**

4 teachers selected from 13 parents and 5 teachers

*November 21, 2016*

**Arithmetic**

If pencils are bought at 70 cents per dozen and sold at 3 for 20 cents, the total profit on 6 dozen is?

*November 16, 2016*

**Arithmetic**

a folding chair regularly sells for $29.50. how much money is saved if the chair is bought at a 20% discount?

*November 15, 2016*

**science**

a bullet is shot from a springfield rifle with a speed of 3,015 ft/s. assuming the bullet moved at a constant velocity, what is the time required for the bullet to strike a target 4,146 meters away

*November 9, 2016*

**Marh**

What is 3 pints to 15 pints?

*November 9, 2016*

**MATH**

An inch on a map represents 200 miles. On the same map, a distance of 375 miles is represented by? A. 1 1/2 inches B. 1 7/8 inches C. 2 1/4 inches D. 2 3/4 inches Thank you for your help.

*November 9, 2016*

**Arithmetic**

a boy sold $88.50 worth of stationery. If he received a 33 1/3% commission, what was the amount of his commission?

*November 7, 2016*

**arithmetic**

on a certain day, the temperature range from -2f to 10f. what is the difference between the high and low temperatures for that day?

*November 7, 2016*

**Statistics**

"Suppose two independent samples have been collected.Based on a sample of 26 from the first population, you observe 14 successes. The second sample of size 26 had 17 successes. What is the critical value for a 85% confidence interval that compares these two population ...

*November 5, 2016*

**Arithmetic**

A man paid $42.30 for gasoline in may, $38.60 in June, and $43 in July. What was the average monthly cost for gasoline?

*November 5, 2016*

**Arithmetic**

A man owned 75 shares of stock worth $50 each. The corporation declared a dividend of 8 percent payable in stock. How many shares did he then own? 81 shares but how?

*November 5, 2016*

**Math**

Six gross of special drawing pencils were purchased for use in a department. If the pencils were used at the rate of 24 a week, the maximum number of weeks that the 6 gross of pencils would last is?

*November 5, 2016*

**math**

A dealer bought some bicycles for $4,000. He sold them $6,200, making $50 on each bicycle. How many bicycles were here?

*November 5, 2016*

**math**

A man owned 75 shares of stock worth $50 each. The corporation declared a dividend of 8%, payable stock. how many shares did he then own?

*November 5, 2016*

**math**

Thank you So much. The answers given are A - 81 shares B - 90 shares C - 91 shares D - 95 shares should i round it off to 81? thanks for help on this.

*November 2, 2016*

**math**

A man owned 75 shares of stock worth $50 each. The corporation declared a dividend of 8%, payable stock. how many shares did he then own?

*November 2, 2016*

**science**

kinsey leaves her house to exercise and run straight down a long street for 5.00 meters at a constant rate of 3m/s then turns and run back toward her house for 2 meters what is her average speed in m/s what is her displacement what is her average velocity in m/s

*November 1, 2016*

**electric heating appliance and fan**

bus bars are used in an electric iron as

*October 28, 2016*

**motor driven small appliance**

vacuum strength is rated in terms of

*October 26, 2016*

**cooking appliance**

a digital clock on small cooking appliance keeps time by

*October 26, 2016*

**Spanish**

Instructions: Modifique el párrafo por cambiar las palabras entre comillas al tiempo FUTURO. Modelo: Mi familia ‘va a visitar’ a nuestros abuelos este verano. Mi familia visitará a nuestros abuelos este verano. Este año ‘vamos a hacer’ ...

*October 26, 2016*

**cooking appliance**

the time required for resin cement to set is about

*October 26, 2016*

**cooking appliance**

the time required for epoxy resin cement to set is about

*October 26, 2016*

**Physics**

What the hell are u teaching people!!! :)

*October 26, 2016*

**Algebra Two**

David’s monthly salary is $2500 plus 6% commission on his sales. What must be the amount of his sales for him to earn at least $3,100 each month?

*October 25, 2016*

**English Writing**

The explain in one paragraph for each website why you think the website is good for academic work. Structure: Topic sentence 2-3 reasons why it is good or bad, or a little of both. Concluding sentence. Make sure to use the evaluative word "because" in your writing. ...

*October 23, 2016*

**Math Homework**

The following frequency table contains the total number of deaths worldwide as a result of earthquakes from 2000 to 2012. Year Deaths 2000 231 2001 21,357 2002 11,685 2003 33,819 2004 228,802 2005 88,003 2006 6,605 2007 712 2008 88,011 2009 1,790 2010 320,120 2011 21,853 2012 ...

*October 22, 2016*

**math**

-23 1/3

*October 22, 2016*

**Math, Functions**

Thanks for answers!!

*October 22, 2016*

**Math, Functions**

It isn't t=3 ..?

*October 22, 2016*

**Math, Functions**

If g(t)= 1/t-2-1, how to solve g(t)=0 ...? Please teach me..!

*October 22, 2016*

**Math**

This is a Bennett diagram question. If 24 students take music, calculate the number of students who take music and drama and also calculate the number for drama only If 3x + x +7 + x

*October 20, 2016*

**Chemistry**

What mass of calcium citrate, Ca3(C6 H5 O7)2, would a tablet manufacturer need to use to provide the same amount of Ca that you found in your tablet? (show calculations) The mass of Calcium for the experiment was .7374g We assumed that any solid that formed when Na2CO3 was ...

*October 17, 2016*

**Math**

What is the value of -3 + 4.5 - (-1.2)?

*October 17, 2016*

**Math Functions**

Hello. Could you please help with my math homework...? An online bookseller gives the following information for their shipping information: "The shipping and handing charge per order is $4, plus $1.50 per book." Let x = the number of books that someone orders. Let S(...

*October 17, 2016*

**chem **

For the reaction 2 N2(g) + 3 H2(g) → 2 NH3(g) which of the following can be determined using only the coefficients of the balanced chemical equation? the number of moles of NH3 obtained if 4.2 mol of N2 react completely to form NH3 the weight of NH3 obtained if 4.2 mol ...

*October 16, 2016*

**chem **

Using the balalnced chemical equation, how many grams of MgO are produced when 31.0 grams of O2 react completely with Mg? 2 Mg + O2 → 2 MgO Molar Mass Mg = 24.3 g/mol O2 = 32.0 g/mol MgO = 40.3 g/mol 55.7 78.1 89.1 111.3

*October 16, 2016*

**chem **

Using the balanced chemical equation, the number of moles of oxygen gas needed to react with 2.5 moles of Mg is __________. 2 Mg + O2 → 2 MgO

*October 16, 2016*

**Social Studies**

I have to search and compare these civilization... ･pre 20th century Japan ･Incan It's my Social Studies project😲💦 Would you recommend me some good websites in English?

*October 16, 2016*

**Science, Nature Sciencence, Nature Sciencence **

What type of evidence do scientists have that helps them to know what life was like in the past?

*October 15, 2016*

**Spanish**

Wow! Thank you very much Sra. that helped me a lot and I will learn from it so I can improve in the future.

*October 11, 2016*

**Spanish**

SraJMcGin can you please help me? Modifique el texto por cambiar los verbos italizados de lo familiar (informal) a lo formal Prepara (1) prepare para salir de viaje el lunes por la mañana. Para ello, haz (2) haga las maletas, sal (3) salga de la habitación y m&...

*October 11, 2016*

**Spanish**

Hello, I have corrected the issue and reposted it. Sorry about that.

*October 11, 2016*

**Spanish**

SraJMcGin can you please help me? Modifique el texto por cambiar los verbos italizados de lo familiar (informal) a lo formal Prepara (1) _____ para salir de viaje el lunes por la mañana. Para ello, haz (2) ______ las maletas, sal (3) _____ de la habitación y m&...

*October 11, 2016*

**Earth science**

If the volume in a graduated cylinder is raised from 50ml to 51 ml, what is the objects volume?

*October 9, 2016*

**Statistics**

A = 3000(1+((.03)/12))^(12)(9) Just plug that into a calculator

*October 9, 2016*

**Calculus I**

You are watching the Chicago marathon from your friend's apartment, 100 feet above the street. A runner passes the building at 11 feet/sec. Let d denote the distance between the base of the building and the runner, and let h denote the distance between you and the runner. ...

*October 9, 2016*

**Math**

A one-product company finds that its profit, P, in millions of dollars, is given by the following equation where a is the amount spent on advertising, in millions of dollars, and p is the price charged per item of the product, in ...

*October 9, 2016*

**statistics**

A STAT 200 instructor is interested in whether there is any variation in the final exam grades between her two classes Data collected from the two classes are as follows: Her null hypothesis and alternative hypothesis are: (a) Determine the test statistic. Show all work; ...

*October 7, 2016*

**Math**

I did binomcdf(22,.25,6) in my calculator. n=22, p=.25, x=6 Is this the correct process?

*September 18, 2016*

**Math**

Suppose a fair four-sided die is tossed 22 times. What is the probability of getting at most 6 fours?

*September 18, 2016*

**Chemistry**

If you had dehydrated 1.00g of the hydrate CaCl2 ∙6H2O how many grams of anhydrous CaCl2 would you expect to be produced? Show calculations. I really am having a hard time with this question. I don't know where to start and how to perform it.

*September 18, 2016*

**stats**

Find the z-scores for which 92 % of the distribution's area lies between minus z and z.

*September 18, 2016*

**Math**

I have a bag with 2 different kinds of objects: 17 cubes, 19 spheres. If I randomly pick from the bag 5 of these objects without return any of it, what is the probability of getting at least 1 of each kind?

*September 11, 2016*

**Pre-Calculus**

The minute hand of a clock is 3 inches long. How far does the tip of the minute hand move in 5 minutes? If necessary, round the answer to two decimal places.

*September 10, 2016*

**Math Precal **

An airplane has an airspeed of 650 km/h bearing 15 degrees north of west. The wind velocity of is 19 km/h in the direction of 30 degrees east of south. Find the resultant vector representing the path of the plane relative to the ground. What is the ground speed of the plane? ...

*September 6, 2016*

**math**

thank you got the answers correct

*August 29, 2016*

**math**

I need help figuring the grade for two students I keep getting a big number. *Note Final can replace a low exam grade 𝐺𝑅𝐴𝐷𝐸 = .15 ∗ (𝐷𝑎𝑖𝑙𝑦 𝑎𝑣𝑔) + .65 ∗ (𝐸...

*August 29, 2016*

**Bus. QA Compliance**

Need assistance with a project summarizing and analyzing a quality assurance program for a financial services company

*August 16, 2016*

**biology**

biology

*August 7, 2016*

**Science**

What does sc mean on all jewlry items

*August 6, 2016*

**Math**

What does sc mean on all jewlry items

*August 6, 2016*

**Math**

On Feb. 27th, 2010, an earthquake of magnitude 8.8 occurred off the coast of Chile lasting up to 3 minutes. Five months later, a 2nd earthquake occurred with magnitude of 5.3. How much more intense was the first earthquake compared to the 2nd earthquake?

*July 14, 2016*

**Chemistry **

Equation of Mg(OH)2 (aq) + KOH (aq) gives you what ?

*July 11, 2016*

**math**

the building supply store sells one liter bottles of water for $1.09 approximately how many 8 ounce servings of water in 1 liter

*July 11, 2016*

**chemistry**

What is the difference between the acid and base notation of a hydroxide? Give an example of the same molecular formula written in acid and base notation.

*July 6, 2016*

**financial management**

Angela Anderson is employed as a Tax Manager by Super Cell Phone Service, Inc. She earns $135,000 per year in this role, supervising a department of five Tax Accountants. Calculate the Medicare taxes that will be withheld from Angela’s annual salary assuming a tax rate of...

*June 12, 2016*

**English**

People who don’t know Harry tend to underestimate him. They cast a skeptical eye on his typical outfit: ragged jeans and shirts that bear evidence of his most recent meal. And his most frequently uttered expression, “Waaaal, I just don’t know,” can make ...

*May 24, 2016*

**Math**

suppose that when your friend was born your friends parents deposited $4000 in an account paying 4.1% interest compounded quarterly. what will the account balance be after 15 years?

*May 22, 2016*

**math**

a plat form and a building are on the same horizontal plane , the angle of depression of the bottom of the building from the top A of the platform is 39 degree. the angle of elevation of the top D of the building from the top of the platform is 56 degree. given that the ...

*May 12, 2016*

**Chemistry**

When chromium has 26 electrons, how many neutrons and protons does it have and what is it's standard notation

*May 10, 2016*

**Calculus**

Farmer Jones, and his wife, Dr. Jones, decide to build a fence in their field, to keep the sheep safe. Since Dr. Jones is a mathematician, she suggests building fences described by y=4x^2 and x^2+10. Farmer Jones thinks this would be much harder than just building an enclosure...

*May 6, 2016*

**Math 3**

How many times bigger is 8*10^6 than 2*10^2?

*May 6, 2016*

**Maths **

If a car weighing 1,054kg collides with another car and then takes 60 metres to come to rest can the speed at the pint of impact be calculated?

*May 6, 2016*

**Math**

it's 4 because 3+3=6 and 4+2=6

*May 4, 2016*

**Trig**

Problem: A cable from the top of a 60 foot high tower is to be attached to the ground (x) feet from the base of the tower. A) if the cable makes an angle of t radians with the ground when attached, express t as a function of x. B) if t = pi/5, how far is the end of the cable ...

*May 1, 2016*

**PHYSICS SPECIFIC GRAVITY**

A 6.8 kg block of some unknown material is suspended from a spring scale and submerged in water. The spring scale reads 48.0 N. What is the specific gravity of the block?

*April 25, 2016*

**science**

H2SO4 is labeled 93.2% and density 1.94g/cm3. Find moles in H2SO4?

*April 24, 2016*

**Chemistry**

Hello Dr. Bob, I see the mistake that I have made, but the initial values that were in my first sentence were given, I just think my coefficients in the equation were wrong. Do the answers at the bottom make sense though?

*April 23, 2016*

**Chemistry**

A flask initially contains 2.00 atm of NH3, 2.00 atm of N2, and 3.00 atm of H2 at 673 Kelvin. -What is the delta G for the reaction? -What is the equilibrium partial pressures of each gas at 673 Kelvin? So I figured out how to do the first question with relevant values: : ...

*April 23, 2016*

**Algebra**

7 – 5(2 – x) = –(x – 8) = 11/6

*April 19, 2016*

**Math**

Evaluate: -17 + 6 =

*April 19, 2016*

**math**

Lines a and b are parallel. When they are cut by transversals, they form a triangle. es025-1.jpg What is es025-2.jpg es025-3.jpg

*April 19, 2016*

**Chem**

Given the equation 2C8H18 + 25O2 = 16 CO2 + 18H2O: How many moles of oxygen gas (O2) are consumed upon combustion of 2.20 L of octane ( D = 0.703 g/mL)?

*April 10, 2016*

**Work**

A truck carrying a 57 kg crate accelerates uniformly from rest to 86.5 km/hr in 18.4 s. Calculate the work done on the crate by the truck (in J). I got 16454 J right. Now why is it positive? K-K = negative if Velocity from rest is 0.

*April 10, 2016*

**Block Colliding with a Spring**

I think there something wrong with the quiz, cuz it tells me its wrong. I tried 3.75N (work by spring) and also total work done. It shouldnt be, I got the 2 other questions right. Still, thank you.

*April 10, 2016*

**Block Colliding with a Spring**

A moving 1.60 kg block collides with a horizontal spring whose spring constant is 480 N/m. The block compresses the spring a maximum distance of 12.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is 0.480. What is ...

*April 10, 2016*

**PHYSICS CENTER OF MASS**

what is the .065??? same for y .065???

*April 10, 2016*

**chemistry **

A radionuclide undergoes alpha emission, and thorium-234 is produced. What was the original radionuclide?

*April 7, 2016*

**math**

Can you plz do callbck for 0799998736&0742239920 then i will call u as soon as i can to tell u anything about careers

*April 7, 2016*

**Math**

A student takes a true-false test exam with 10 questions. If the student guesses all ten questions, find the probability he gets 7 or 8 right. p(x=7) + p(x=8) (.5)^7(.5)^3 + (.5)^8(.5)^2 I have the correct answers which are .117+.044= .161 But when I calculate the answer on ...

*March 30, 2016*

**Chemistry**

A single dose of a certain antacid contains 250. mg of Mg(OH)2 and 300. mg of CaCO3. How many mmol of H+ can be neutralized by one dose of this antacid? Do not include units in your answer

*March 29, 2016*

**math**

the product of a number and five decreased by eight

*March 29, 2016*

**math **

use the unit circle to determine the exact value of each angle: sine 30 degrees, cosine pi, sine 11 pi divided by 6, and cosine 135 degrees.

*March 28, 2016*

**math**

find the values of cosine 21 degrees, and sine 3 pi divided by 10

*March 28, 2016*