Posts by tammy
Total # Posts: 671
Janet has a jar with 8 gold marbles 12 silver marbles and 4 bronze marbles is she chooses two marbles without replacement, what is the probability that she chooses two silver marbles. I think the answer is 11/46 but not sure how to work the prboem
December 10, 2016
Among the solubility rules previously discussed is the statement: Carbonates, phosphates, borates, and arsenatesexcept those of the ammonium ion and the alkali metalsare insoluble. (a) Write the expression for the equilibrium constant for the reaction represented ...
November 27, 2016
In the production of carbon disulfide (CS2), carbon (C) and sulfur dioxide (SO2) are reacted. If 8.00 g of sulfur dioxide reacts, how many moles of carbon dioxide are produced?
April 26, 2016
smith is a weld inspector at a ship yard. he knows from keeping track of good and substandard welds that for the afternoon shift 5% of all welds done will be substandard. If smith checks 300 of the 7500 welds completed that shift, what is the probability that he will find less...
April 21, 2016
How many moles of gas must be forced into a 5.0 L tire to give it a gauge pressure of 33.6 psi at 28 ∘C? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.8 psi so that the total pressure in the tire is 48.4 psi . PV = nRT 48....
April 9, 2016
First write out what you know in order to get the formula: x = # of movie goers 44% of movie goers eat popcorn so 44% of movie goers = movie goers who eat popcorn Out of 17 movie goers how many will eat popcorn? 44% of x = 44% of 17 = 7 movie goers who will eat popcorn But the...
March 19, 2016
how to write a balanced equation for the following reactions with amounts of released or absorbed heat expressed in numbers within the equation 1 mole of methane with O2 yields CO2 and H2O and releases 213 kcal of heat
October 28, 2015
I'm doing a lab for Le Chatelier's Principle. I'm concerned that all my answers sound very similar. Can someone help me and let me know if my answers are making sense? ~Thanks 1.) How is the reaction Zn(OH)2 <=> Zn^+2 + 2OH- affected by adding OH- I think ...
March 20, 2015
A 24 meters pole is held by a three guy wire into vertical position. Two of the guy wires are of equal length. The third wire is 5 meters longer than the other two and is attached to the ground 11 meters farther from the foot of the pole than the two equal wires. Find the ...
February 23, 2015
Emily spent 1/2 of her money at the grocery store. Then, she spent 1/2 of what was left at the baker. Next she spent 1/2 of what was left on a cd. She spent the remaining $6.00 on lunch. How much money did she start with ?
January 20, 2015
Compute Brianna's estimated tax payment for the third quarter. She is self-employed and she expects to earn $84,400 this year. Her estimated income tax rate is 22%. For self-employed persons, social security tax is 12.4% of wages up to $106,800, and Medicare tax is 2.9% of...
December 9, 2014
Using the dating method, calculate the discount date and the net date. Unless otherwise specified, the net date is 20 days after the discount date: The date of invoice is April 6th, Terms of sale is 2/10, EOM. What is the Discount date? What is the Net date?
December 5, 2014
Intro to Chemistry
When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon dioxide, and water are produced. CaCO3(s)+2HCl(aq)=CaCl2(aq)+H2O(l)+CO2(g) How many grams of calcium chloride will be produced when 27.0 g of calcium carbonate are combined with 11.0 g of ...
November 10, 2014
Bill is a restaurant manager that falls into the 25% marginal bracket and pays an additional 5% for state taxes. He has invested 20,000 in corporate bonds which is currently earning a annual return of 7.5%. What is the after tax return on bill's corporate bonds for the year?
October 21, 2014
In October, a HARDWARE STORE purchased snow shovels for $8 each. The original markup was 50% based on the selling price. In December, the store had a sale and marked down the shovels by 20%. By January 1, the sale was over and the shovels were marked up 15%. In March, the ...
August 25, 2014
I need to identify the subject, verb, and any complements (direct object, indirect object, subject complement, objective complement) and the prepositional phrases of the following sentances. Those mustard pickles are to sour for me.
May 29, 2014
The height of a certain species of a tree are normally distributed with a mean of 30ft and stand dev of 4ft. If a random sample of 16 of these trees is taken, what is the probability that the sample mean is less than 32fy?
April 5, 2014
The interest rate is composed of _____ and the ______? a. risk-free rate,risk discount b.risk free rate, risk premium c.risk free rate, default risk premium d. none of the above
March 27, 2014
Texas Southern University
In a respresentative study,a sample of n = 100 adolescents with a history of group participation is given a standardized self-esteem questionnaire. For the general po;ulation of adolescents, scores on this questionnaire form a normal distribution with a mean of u = 40 and a ...
February 6, 2014
You are given the choice of $4,000 in extra taxable income per year or a tax-exempt medical policy. The medical policy costs $300 per month. Your tax rate is 25%. Considering financial factors only, should you take the cash or the medical policy?
January 8, 2014
Which of the following was Eisenhower's most significant legislative achievement? A. The Highway Act of 1956 B. The establishment of modern Republicanism C. The extension of Social Security benefits D. Increasing the minimum wage
November 24, 2013
Marlon has 4 baseball cards, Jake has 4 baseball cards and Sam has 3 baseball cards. Can you write a multiplication sentence to find how many baseball cards they have altogether? Explain.
November 12, 2013
The cost, y, of renting a canoe can be shown by y+12x + 30 where x is the time in hours. Identify the y intercept as an ordered pair and explain what it means in terms of the problem.
October 13, 2013
You want to determine if your widgets from machine 1 are the same as machine 2. Machine 1 has a sample mean of 5 and a population standard deviation 2 and a sample size of 4. Machine 2 has a sample mean of 10 and a population standard deviation of 2 with a sample size of 64. ...
October 7, 2013
You want to determine if your widgets from machine 1 are the same as machine 2. Machine 1 has a sample mean of 15 and a sample standard deviation 6 and a sample size of 18. Machine 2 has a sample mean of 12 and a sample standard deviation of 6 with a sample size of 18. With an...
October 4, 2013
A roller-coaster car with a mass of 550 kg starts at rest from a point 46 m above the ground. At point B, it is 23 m above the ground. [Express your answers in kilojoules (kJ).] (a) What is the initial potential energy of the car? Incorrect: Your answer is incorrect. . kJ (b) ...
September 28, 2013
a hockey puck slides across the ice at a rate of 11 m/sec and covers a distance of 70 meters. How long does it take the puck to travel 70 meters. also calculate the acceleration of the puck.
September 12, 2013
Neds Sheds purchases building materials from Timber town Lumber for $3,700 with terms of 4/15, n/30. The invoice is dated October 17. Neds decides to send in a $2,000 partial payment. By what date must the partial payment be sent to take advantage of the cash ...
August 30, 2013
Intro to Healthcare Statistics
Discuss how statistics are generated and how statistical information is used by healthcare organizations. Explore the NC State Center for Health Statistics at the following website and discuss at least two types of statistic health information that NC collects.
August 25, 2013
Three of every seven sales transactions at Dollar Discount are on credit cards. What percent of the transactions are NOT credit card sales? (Round percentages to the nearest tenth.)
August 15, 2013
How can the Sociological Perspective help you in understanding the plight or condition of members in society who come from marginalized groups. i.e. African Americans, members of the LTGB community, women, Mexican Americans
June 4, 2013
To select a _________ sample, the population is divided into disjoint subgroups according to some characteristics like income level, and then a few individuals are selected randomly from each of the subgroups to be in the sample. (Points : 1) (May choices are) stratified ...
April 21, 2013
Joe has $10,000 to purchase a used car. If the sales tax is 7% and the fee for title and license plates is $200, what is the maximum amount Joe can spend for a car? $9,158.88 <- I think this one is $5,764.70 right. $9,345.79 $9,532.71
April 7, 2013