Posts by Lori
Total # Posts: 501

Science
If I want to do an experiment to find which route to class is faster (route 1 or route 2), what would be my control group and what would be my treatment group in the experiment? 
math
I have 440 feet of fence. After fencing in a square region, I have 136 feet of fence left 
Physics
The Little Prince is a fictional character who lives on a very small planet as shown in the figure below. Suppose that the planet has a mass of 1.95 1013 kg and a radius of 1.06 103 m. (a) How long would it take for an object to fall from rest a vertical distance of 1.16 m? (b... 
math
need to write an equation only for: four less than half a number 
math
What is the function rule with input of 18,6,10,22,4,14 and output of 13,7,9,_,_. The last 2 outputs are blank as we need to figure out the rule and then fill in the blanks. 
Science
why can't a model of the solar system be proportionate in distance b/w the planets and size of the planets? I think that a scale model that is proportionate could include both 
tribal government
if the tribal government don't recognize judicial board does separation of powers still work 
political
the question is if Tribal government don't recognize judicial board members does the separation of powers still work for Tribal Government 
political
when there is no judicial board is there seperation of powers for political 
probability
If a soccer team won 60% of the games in which its players scored 5 or more goals, what is the probability of choosing a game in in which the team scored 04 goals and won the game? The season so far is they have won 3 games scoring 04 goals, won 3 games scoring 5 or more ... 
Economics
Suppose the market demand and supply are given by Qs = 50 + 3P and Qd = 300  4P. What is the equilibrium price? ? is the answer 50 
Pre algebra
A coin is tossed and a number cube is rolled. What is the probability that the coin shows heads and the number cube shows 6? 
Chemistry
In a laboratory, the following reaction is performed by combining 358 g of H2O and a sufficient amount of CaC2. The percent yield for this reaction is 94.5%. Calculate the actual yield of acetylene (C2H2) in grams from this reaction. CaC2 + 2H2O C2H2 + Ca(OH)2 
Math
How many 1/2 sq ft tiles to cover a desk that is 5 1/2 ft long and 3 1/2 ft wide? 
Math w/business apps
How much should be invested at 6% compounded monthly so that the investment will be worth $20,000 in six years? 
Chemistry
If the percent (mass/mass) for a solute is 6% and the mass of the solution is 300 g., what is the mass of solute in solution? 
Chemistry
What is the mass of Na2SO4 is needed to make 1.5 L of 3.0 M solution? Na=23 g.: s = 32 g: O=16g.) 
chemistry
If the solubility of gas in water is 5.0g/L when the pressure of the gas about the water is 2.0 atm, what is the pressure of the gas above the water when the solubility of the gas is 1.0 g/L? 
English
Can you please check if my answers are correct? 1.)The pupil had not(brang, brought) the homework. Answer: The pupil had not brought the homework. 2.) Has the choir ever(sung,sang) that tune? Answer: Has the choir ever sung that tune? 3.) The seamstress should have (broughten... 
Introduction to Computer Applications
I am doing and assignment that requires a short story or narrative poem of my choice to summarize and such. any suggestions or recommendations on short stories? 
Math
Sara bought 2 boards of wood one board is 18 inches the other is 30 inches she wants to cut the wood into longest equal parts with no wood left over does Sara have enough wood for 10 equal size peices 
English
Cross out prepositional phrases. Underline the subject once and the verb/verb phrase twice. Identify adv. 1.) The discussion between Lori and her mother was regarding their weekend plans. Subject: discussion Verb: was regarding Phrase: between Lori and her mother 2.) One house... 
Algebra
A football field has a width of times the sum of x and meters and a length of the difference between 2x and 5meters.write an expression to represent the area and perimeter of the field. 
Chemistry
how many L of O2 are needed to react completely with 63.0 L of H2S and STP? 
Math/ algebra
1/16 1/16*100= 6.25% 
math
there was 3/4 of a pizza left over from a family gathering. The next day, Tina ate 1/2 of what was left. How much of the whole pizza did Tina eat? 
Chemistry
The equilibrium constant for Br2 + Br <> Br3 at 25 degrees is 18. Calculate the equilibrium constant Br3 <> Br2 + Br 
biology
Describe in a short answer the history of the discovery of DNA 
Finance/math
Reimbursement per screen 66.05 Equip cost/mo 1450.00 technologist cost per Mammography $15.60 tech aid/per $3.10 Variable cost per mamo $15.00 Equip. maintanance/mo. per machine $916.66 1) what is the monthly patient volume needed per month to cover fixed and variable costs? 2... 
financial management
Ashley, If you look at the bottom of your page under "Related Questions", this same question has been answered 4 different times. 
G ss jikowyi subject physics
Mercy, if you look at the bottom of this page, where it says "Related Questions", this question has been answered about 3 different times. 
social studies
Nina, it could be all of the answers. However, I would say D is probably the best choice. 
Life Orientation
The biggest service delivery protest in most communities is over the company Uber. The taxi drivers do not like Uber because it is taking away business from the taxi drivers. If a person needs a ride somewhere, they no longer have to call a taxi company. Instead, they can get ... 
Algebra
I need help with the following question: (2 + p)(r+ 9) = (r + 9)(2 + p) Is this communtative property? Thank you very much for all your help. 
Algebra II
Thank you STEVE 
Math
Yes, the answer is 25. You multiply and add everything in the ( ) first which gives you 2 + 23 = 25 
algebra
thank you 
algebra
6 slices of pizza and 4 drinks cost $12.60 while 3 slices of pizza and 4 drinks cost $8.10. What is the cost of each? 
algebra
3 shirts and 2 hats cost $52. 2 shirts and 1 hat cost $32. Find the cost of each. 
written communication
If you blank to visit your grandmother, you should go now; visiting hours will be ending soon. 
Math
A grade six class is having a fundraiser. The class boys have three bags of apples. Each bag has 24 apples. The total cost of the three bags of apples is $12.24. The class sells the apples for 0.75 each. How much will the class gain per apple? 
Math
A wheelchair ramp to a public building forms a 15 degree angle with ground and reaches a height of 2.3 metres above the ground. A) fill in these values on the diagram to the right. B) Label the length of the ramp, X . Then find its length ( to one decimal place) 
Math
A room measures 3 m by 5 m. A scale drawing is to be made, using a scale of 1 cm=0.5. Find the dimensions of the scale drawing and provide sketch of this room drawn to scale. 
Math
A rectangle has dimensions 4 ft by 6 ft. Show that if the length and width are doubled, the area is 4 times as large. 
Math
Draw and label a diagram of each figure described below and calculate its volume. A) a sphere with a radius of 2 m. B) a cone with a diameter of 8 ft and height of 10 feet. 
Math
Hi! Can someone help me with this? Thanks! Directions: Solve this equation by doing it twice; one time using the substitution method and one time using the graphing method. x – 2y = 0 3x – y^2 = 0 
Math
Hi! Can someone help me with this? Thanks! Directions: Solve this equation by doing it twice; one time using the substitution method and one time using the graphing method. x + 2y = 1 5x – 4y = 23 
Math
Find a way to estimate the time to flip a coin 10,000 times; 100,000 times. 
Math
Hi! Can someone help me with these? I'm suppose to verify each idenity. Thanks! 1.) 1/tanθ +tanθ=sec^2θ/tanθ 2.) secθ1/1cosθ=secθ 
Math Geometry
Given: Angle ABC is a right triangle with hypotenus AB D,E and F are midpts of the sides of the triangle Proof: a. CDEF is a rectangle b. EC is half of AB 
Chemistry
Balance the following equation in basic conditions CoCl2 (s) +Na2O2 (ag) > Co(OH)3 (ag)+Cl (ag) + Na+ (ag) 
Chemistry
I keep getting Mno2+4oh+3fe3+ >mno4+3fe2++2h2o but it is saying incorrect 
Chemistry
in a particular redox reaction, MnO2 is oxidized to MnO4– and fe3+ is reduced to fe2+. Complete and balance the equation for this reaction in acidic solution. Phases are optional. 
Chemistry
How do you balance, step by step C2H5OH + K2Cr2O7 + H2SO4 = Cr2(SO4)3 + K2SO4 + CH3COOH + H2O? 
Chemistry
step by step, show how to balance C2H5OH + K2Cr2O7 + H2SO4 = Cr2(SO4)3 + K2SO4 + CH3COOH + H2O 
Math Help
The New York Times study of homes reported average house size in 2001 to be 2,428 square feet, compared with an average of 2,150 square feet in 1987. Suppose a study of homes over the years recorded the year from 1987 to the present, as well as the size of the house in square ... 
Math Help
I really need help on this. I tried doing it on my own, but, I got stuck. Thanks! (a) List any approximate xintercepts values. (b) Set y = 0 and solve the resulting equation; y=x^34x^225x+100. 
finance
1.Bill and Warren are thinking about issuing 11 percent coupon bonds that will mature in 15 years. Market interest rates are 13 percent. What could they sell each of the bonds for? 
PreCalc
Describe the difference between transformations and nonrigid transformations. 
PreCalc Help!
@Mia, did I do this write? x^28x+15 (x + 3) (x + 5) x5=0 x3=0 The zeros would be x = 3 x = 5 
PreCalc Help!
I really need help with this question. Thanks! Find the zeros of the function algebraically. Be sure to show all work. f(x)=x^28x+15  10x 
PreCalc
Find the zeros of the function algebraically. Show all work. f(x)=x^28x+15  10x 
science
Mary is driving on a straight road. Suddenly a deer jumps out in front of her. Mary turns her car to the left to avoid the deer. Which best describes what happens to mary's head position if she is wearing her seatbelt? A) mary's head moves to the left b marys head ... 
Math
390 
Chemistry
if you dissolve 25.5 g of KBr in enough water to make 1.75 L of solution, what is the molarity of the solution 
Biology
Describe how a monomer is the basic unit of all macromolecules. 
financial management
A capital project has an initial investment of $100,000 and cash flows in years 16 of $25,000, $10,000, $50,000, $10,000, $10,000, and $60,000, respectively. Given a 15 percent cost of capital, •(a) compute the net present value. . •(b) compute the internal rate of... 
financial management
2. If you have an opportunity cost of 10%, how much should you be willing to invest now to have $8,000 accumulated in 10 years? 
analytical chemistry
Could someone please clarify. I recently sent this question to the forum and thought I had it figured out. Now another student has told me to do this: 35.7 ppm x 250ml = 8.925 x 103 g 8.925 x 103 g/4.272g=2.089 x 103 = 2089 x 106 = 2089ppm Please help I do not know what is... 
analytical chemistry
Thanks so much. You are correct the answer should read 178.5 ppm. 
analytical chemistry
Suppose a 4.272 g soil sample undergoes an extraction with 50 ml of extracting solvent to remove the lead. This 50 ml was then diluted to 250 ml and tested by atomic absorption technique. The concentration of lead in this diluted extract was found to be 35.7 ppm. What is the ... 
Algebra 2 Help!
For number 4 would the answer be "1 real"? Cause the options were 1 real, 2 real, or 2 complex. 
Algebra 2 Help!
1.) Simplify the expression. [sqrt3 + 2i][sqrt3  2i] 2.) Solve using the square root property. (y  4)2 = 18 3.) Rewrite the the function in vertex form. You may use completing the square or an alternate method. f(x) = 5x2  10x + 3 4.) Use the Discriminant b2  4ac to ... 
math
If you divide 3 oranges amongst 4 friends how much does each person get? 
Analytical chemistry
How many grams of solid CuSO4. 5H2O are needed to prepare a 500 ml of a 1000 ppm solution of Cu? 
Fundamentals of Finance
I've posted 2 different questions on the above mentioned and no one has helped with the questions, or if it was than how to I go about finding them. HELP! I'm so lost here! 
Fundamentals of finance
"Genatron wants to estimate what will happen to its income before interest and taxes if its net sales change from the 2012 level of $1,500,000. Refer to Genatron’s 2012 income statement below, where the income before interest and taxes is $247,000 (EBT of $190,000 ... 
Fundamentals of finance
"Estimate the weights (wi) for assets in the three portfolios given the following information about the portfolio holdings: " Price Number of securities Market value Portfolio weights Percentages to one decimal place a. Stock A $25 200 500 0.22522523 22.50% Stock B... 
Statistic
Consider a football team for whom the numbers on the active players’ jerseys are 29, 41, 50, 58, 79,…, 10 (listed in alphabetical order of the players’ names). Does it make sense to calculate the mean of those numbers? Why or why not? 2. The Fair Isaac ... 
analytical chemistry
Regarding ICP analysis 4. For each of the following electrical discharge sources list the major strengths and limitations: a. dc arcs, b. ac arcs, c. ac sparks. 
Math Help!
Determine whether the relation is a function. {(4, 9), (4, 9), (2, 3), (10, 5)} 
math
[(15)(7)divided by (217)= 
maths
I would really appreciate it if someone could answer this ASAP! 
maths
What do they mean by using the equation about to show you found your answer? 
Maths
Going off of the question I asked: How many miles, m, will each of the cars have on them when the numbers of weeks, w, is the same? Use the equation from Problem 2 Part A (the one above). Show how you found your answer. Thank you!!!!! 
math
Please help! 
math
This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS). 
Math
Fill in the blank so that the numbers are evenly spaced. 101, _____, _____,1001 
5th grade math parent
Fill in the blank so the numbers are evenly spaced. 101, _____, _____, 1001? 
BCIT
A series of standard solutions of benzene in toluene solvent is to be prepared for an internal standard procedure with ethylbenzene serving as the internal standard. Tell how you would prepare the solutions, including the milliliters of benzene concentrations are to be 0.5%, 1... 
Chemistry
A 0.110L sample of an unknown HNO3 solution required 52.1 mL of 0.150 M Ba(OH)2 for complete neutralization. What was the concentration of the HNO3 solution? 
chemistry
For the following chemical reaction write the net ionic equation, including the phases. 2HBr (aq) +Ba(OH)2(aq) > 2H2O(l) +BaBr2 (aq) 
physics
A light spring having a force constant of 130N/m is used to pull a 7.50kg sled on a horizontal frictionless ice rink. The sled has an acceleration of 2.50m/s^2? Part A: By how much does the spring stretch if it pulls on the sled horizontally? X=0.144m Part B: By how much does ... 
Chemistry
When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon dioxide, and water are produced. CaCO3 +2HCl yields CaCl2 +H2O +CO2 How many grams of calcium chloride will be produced when 29.0 g of calcium carbonate are combined with 13.0 g of hydrochloric acid... 
math
A professor wants to supplement her pension with investment interest. If she invests $26,000 at 7% interest, how much more would she have to invest at 9% to achieve a goal of $4,160 per year in supplemental income? 
spanish II
Has anyone taken Spanish 2 in summer school from apex? What was it like? 
math
Find the mininum product of two numbers whose sum is 55 
Math
You and six of your friends will go on a roadtrip. A seven passenger minivan is rented for the weekend. How many different ways can you and your friends sit in this vehicle? 
Calculus
thank you! 
Calculus
would it be possible to get the steps? or some sort of explanation?