Posts by Jane
Total # Posts: 1,684

Math
Paul is 20 years older than joy four years ago; the ratio of their ages was 7:3 find the present age of Paul 
Science
How are models limited by our patterns of thought? 
Math
Peter has $2000 invested in an account that gives him 5% interest a year. Write an equation for the amount of money, m, in his account after y, years. How much money will be in his account in 10 years, if he does not put any more in or take any out? 
Math
A surveyor sights two signs and the angle between the two lines of sight measures 55. If the first and the second signs are 70 m and 50 m away,respectively,from the surveyor, find the distance between the two signs .Express your answer to the nearest meter. 
Math
Two ships leave the same port at the same time. One ship sails on a course of 110 degree at 32 mi/h. The other sails on a course of 230 degree at 40 mi/h. Find the distance between them after 2 hours. Express your answer to the nearest mile. 
Chemistry
dr. BOB is the answer 20 cents? 
Chemistry
Suppose you had sulfur hexafluoride as your unknown. It has a cost of $200 for 5 pounds of the substance. If your syringe has a volume of 125.0 mL, the room temperature was 78F, and the pressure was 755 mmHg, what would it cost to fill your syringe 3 times to determine its ... 
chemistry
I do understand Kc=Kp though 
chemistry
Excitement aside, how do you solve the problem using the Kp method? 
chemistry
At 90C the following equilibrium is established H2(g) + S(s) = H2S(g) Kc= 6.8x10^2 If 0.17 moles of H2 and 0.4 mole of Sulfur are heated in a 1L vessel up to 90C, what will be the partial pressure of H2S at equilibrium? Dr. Bob, first is 0.32 atm correct? Second, if so, is 0.... 
History
If a soccer ball is for the sport soccer, why isn't a football called a football ball if the football is also the name of the sport itself? 
Math
On graph paper, use a table to make a complete graph of y = x2 ? 2x ? 8. Homework Help ? Write the coordinates of the yintercept. What is the connection between the y?intercept and the equation y = x2 ? 2x ? 8? Write the coordinates of the xintercepts. What is the lowest ... 
Algebra
At the spring fling, john can make 5 cups of hot tea in 2 minutes. Sammy can make 6 cups of hot tea in 2.5 minutes. How long should it take them to make hot tea for all 245 
Statistics
Consider the probability that fewer than 17 out of 145 people will get the flu this winter. Assume the probability that a given person will get he flu this winter is 11%. Approximate the probability using the normal distribution. Round the answer to four decimal places. 
BiologyASAP
In a reaction you use 400 ul of 12mM Bgalactosidase. Add 2.3 ml of buffer and 0.3ml of ONPG to a cuvette. what is the final concentration of the cuvette? Answer below to one decimal place. 
Math
the first term in the sequence is 256. after the first term, each term is multiplied by two amd then divided by four. what is the value of the 9th term 
Science
Suppose a mutation occurs in the gene for a particular aminoacyltRNA synthetase. The mutation changes which amino acid is recognized, without affecting which tRNA molecule is recognized. How is this likely to affect protein synthesis?Find all that apply. It will change the ... 
English
Correcting faulty Parallesim sentences. 1.The professors test were long,difficult,and produced anxiety. 2.Medical tests showed that neither being allergic to dust nor seasonal hay fever caused the child’s coughing fits. 3.The hair stylist warned her customers ,”I&#... 
MaTh
Simplify i^1+i^2+i^3+... i^97 + i^98+i^99 
Math
$25000 is invested for 4 years 9 months .If the invesment is offered 12% compounded semi anually for the first 2 years and 10% compounded quarterly for the rest of the period,find the future value of this invesment. 
Math
Translate the sentence into an inequality. Ten times the sum of a number and 27 is at least 26. 
Math
On 12 february 2009,sally invested $2000 in a bank and received an amount or $2040 on 23 june 2009.calculate the simple interest rate offered by the bank 
Math
At what rate of simple interest will a sum of money double itself in four years 
Math
On graph paper, use a table to make a complete graph of y = x2 ? 2x ? 8. a)Write the coordinates of the yintercept. What is the connection between the y?intercept and the equation y = x2 ? 2x ? 8? b)Write the coordinates of the xintercepts. c)What is the lowest point on the... 
Algebra
A geodesic dome is composed of two different types of triangular panels. One of these is an isosceles triangle. In one geodesic dome, the measure of the third angle is 70.5 degrees more than the measure of either of the two equal angles. Find the measure of the three angles. 
Algebra
Classrooms on one side of the drama building are all numbered with consecutive even integers. If the first room, the room with the smallest classroom number, on this side of the building is numbered x, write an expression in x for the sum of the first five classroom numbers in... 
Algebra
Use the distributive property to write the sum as a product. 2x+2y 
maths
i have two piece of ribbon one is 17.5cm longer than the other and 1/3 of one ribbon is the same as 3/4 of the other what is the size of the smaller ribbon 
Multivariable calculus
I have to show that the relative error of the product of two positive numbers is aproximately to the sum of the relative errors of its factors. My teacher told me to use first order approximation, but I don't know how to use it.Please help 
physics
if some of water in calorimeter splash out when tranfering the metal block, will it affect the experiment result? 
Math
You have to answer 3 essay questions for an exam. There are 6 essays to choose from. How many different groups of 3 essays could you possibly choose? 
calculus review please help!!
Yes I got 26/3 as the exact answer but in terms of it being to the nearest foot it would be 9 right? 
calculus review please help!!
I took the definite integral of t^2+2t+1 from [0,2] and got 9. Is this correct? I'm not sure if I'm doing it correctly 
calculus review please help!!
The velocity of a particle moving along the xaxis is v(t) = t^2 + 2t + 1, with t measured in minutes and v(t) measured in feet per minute. To the nearest foot find the total distance traveled by the particle from t = 0 to t = 2 minutes. 
SS Help
Don't tell her she needs patience. Yes nobody will tell her the answer in 3 minutes. But you could provide her with links of help her. I think you need to develop a brain and kindness. Answers: D. A. B. I promise I got a 100% on my quick check. Your welcome. Unlike ... 
math
It takes a hose 3 minutes to fill a rectangular aquarium 10 inches long, 12 inches wide, and 13 inches tall. How long will it take the same hose to fill an aquarium measuring 22 inches by 30 inches by 33 inches? 
bussiness
1.Please calculate how many cartons (rounded number) a 20ft GP Container can accommodate respectively according to the information above. 20ft GP container:cartons 
8th Grade History
Clearly, we shouldn't trust Ms. Sue. She's not a reliable source if she couldn't figure out the right answer. 
math
You have a total of 52 dimes and quarters. You have 10 more quarters than dimes. Which system of equations can you use to find the number x of quarters and number y of dimes you have? Use the system to determine how much money you have in quarters and dimes. 
English 11
Whats the difference between project proposal and research proposal? 
English 11
Can you send me a good reference about how to create a project proposal for a middle school stude like me? Thanks a lot. 
Writing
Whats the difference between project proposal and research proposal? 
Writing
Anyone who knows a good source on how to write a project proposal? 
Finance
What is the present value of $100 PERPETU I TY of the interest rate is 7%? If interest rates doubled to 14%, what would its present value be? At 7% hundred dollars multiplied 0.943 equals 9430 or is it 14.2857 multiplied 100 equals 1428. 57? At 14% is it $100 times 0.877 ... 
math
a printer prints 17 pages is 6 minutes. how many minutes per page 
math need help now
all tutors here r great. U will get an answer soon. K. Hope u get the right answer. 
math need help now
Would it be D 
Math
A segment that is a units long makes a Cdegree angle with a segment that is b units long. In terms of a, b, and C, find the third side of the triangle defined by this SAS description. 
Math
A circular sector has an 6.26inch radius and a 10.84inch arc length. There is another sector that has the same area and the same perimeter. What are its measurements? 
Financial management
You are an incredibly sexy individual and have just won best price in a beauty context.you have the following options a)$1000 received now b)$180000 at the end of five years C)$11400per year for ever Prove to select the optimal price assuming discount rate is 12% 
Political Science
What are some pros and cons to privatizing the U.S Postal Service? 
physics
An object is released from rest and falls in free fall motion. The speed v of the object after it has fallen a distance y is given by v2 = 2gy. In an experiment, v and y are measured and the measured values are used to calculate g. If the percent uncertainty in the measured ... 
science
i think the ans is B 
science
Free ears in dogs are controlled by dominant allele (F), and attached ears are controlled by the recessive allele (f). In addition, Short dogs is due to a dominant allele(S), and long hair is due to a recessive allele (s). Which of the following is the genotype of the dogs ... 
biology
Which of the following organs remove nitrogenous waste from the body? a. Liver b. Large Intestine c. Kidneys d. Gall Bladder 
8th grade math
I say D because 3/5 is a simplified version of 6/10 
Visual Basic Programming in Visual Studio 2015
I have an application program to submit help tickets. The problem is the error messages are only supposed to pop up when someone doesn't format it correctly but it either don't or comes up after typing when there is no errors. The next issue is my msgbox for ... 
American Government
The federal government sets requirements that all public schools must follow, while state governments set standards listing what students need to learn. This is an example of what constitutional system? A. dual federalism B. cooperative federalism C. layered federalism D. ... 
social studies
Rosie is right. Thanks! 
Math
A store buys shirts for $12 each and marks up the price by 25%. What is the price for a shirt at this store? 
Physics
two blocks (a and b) are in contact on a horizontal frictionless surface. a 60N constant horizontal force is applied to A. the mass of a is 3.0 kg and the mass of b is 15 kg. what is the magnitude of the force of a on b 
STATISTICS
Miss Dombo, a Ticketing Manager with an Airline flying international routes, has realised that not all passengers show up for their reserved seat. It is clear to her that each passenger’s behaviour is independent of the other. Having fixed the chances of a passenger not ... 
biology (genetics)
A purebreeding white mouse with a long tail was crossed to purebreeding pink mouse with a short tail. The F1 progeny were all pink with long tails. These F1 mice were test crossed to white mouse with a short tail. If the gene controlling color and the gene controlling tail ... 
Genetics
A purebreeding white mouse with a long tail was crossed to purebreeding pink mouse with a short tail. The F1 progeny were all pink with long tails. These F1 mice were test crossed to white mouse with a short tail. If the gene controlling color and the gene controlling tail ... 
Math
84.82inches 
Math
Village B is 7km due south of village A and village C is 9km due south of B. Village D is 8km from A and is due east of B. Find DB and DC. 
Physics
If you apply a changing force, will either the velocity or the acceleration change in the same way as the force? 
Math
I have to invest $7000 and would like $300 as earnings from the investment. How much should I invest in stock that's getting 13% annual return and how much should I invest in a bond that pays 2%? 
Math
I think the answer is 1810=8 
Math
1018=8 
Math
Between midnight and 6:00am, the temperature dropped 10 degrees F. Between 6 am and 12:00; the temperature rose 18 degrees F.What was the change in the temperature from midnight to noon. I can't seem to get the formula for this problem 
world history
city states ruled by kings monotheistic religion and social heirarchies 
Math
Jenny bought 3.50 pounds of peanuts for $12.60.Her friend buy's 4.00 pounds of pecans for $15.20. Which is less expensive per pound? By how much? 
Calculus
Hi, please I need help with this demonstration: If “f” , “g” :[ 0,1]→R are continuous functions, they are differentiable in (0,1), f(0)=0, g(0)=2 and │f ‘ (x)│≤1 ,│g ‘ (x)│≤1 for the interval (0,1). Prove ... 
Social studies please help :) thank u so much!
Number 4 is B and C I just took the quiz 
chemistry
2.00g of carbonate reacts with excess hydrobromic acid. Use this balanced equation to fond the theoretical yield. Na2Co3 + 2HBr = CO2 + H2O + 2NaBr 
Algebra
Where do you insert parenthesis to make this equation true: 3x5+42x2+64=15 
Chemistry
The human body obtains 885 kJ of energy from a chocolate chip cookie. If this energy were used to vaporize at 100 degree Celsius, how many grams of water could be vaporized? The heat of vaporization of water at 100 degrees Celsius is 40.7 kJ/mole. 
Chemistry
The human body obtains 885 kJ of energy from a chocolate chip cookie. If this energy were used to vaporize at 100 degree Celsius, how many grams of water could be vaporized? The heat of vaporization of water at 100 degrees Celsius is 40.7 kJ/mole. 
Math
The ratio of a triangle's sides is 4:3:6. If the length of the hypotenuse is 1/4, what is the value of the length of the short leg of the triangle subtracted from the length of the long leg of the triangle? Help please? 
Physics
1, A Body Of Mass 6kg Was Acted Upon By A Constant Force Of 18N. Calc Its Velocity In 5sec. 2. A Car Moving At 108km/hr Was Gradually Brought To Rest By Constant Force Of 2500N After 8sec. Calc The Decelleratio 
science
what are some examples of a suspension? i need help!!! 
Math
There are 12 more toy cars than toy trucks in a toy box with a total of 38 toy cars and trucks. How many toy trucks are in the toy box? 
math
100 meters of fencing is available to enclose a rectangular area next to a river .Give a function that can represent the area that can be enclosed in terms of X 
Calculus  Discontinuity
Thank you so much for explaining that! 
Calculus  Discontinuity
I thought that since the limit exists, but does not equal f(3) it would be removable 
Calculus  Discontinuity
What kind of discontinuity is this piecewise function? Removable or jump? f(x) ={ (2x^2  5x  3)/(x3) if x does not equal 3 ............6............................if x = 3 
math
simplyfy if quadratic equation or not quadratic equation and arrange into quadratic equation form 25r2=4x 
math
a garden 7m by 12m will be expanded by planting a border of flowers,the border will be of the same width around the entire garden and has an area of 92m 
PreAlgebra
Leg of 7 km and hypotenuse of 22 km 
LA walk two moons
What the heck is wrong with you? They are trying to get help. You are supposed to help them or provide them with sources to read. I hate all of you. Maybe its time to ban you two. I could tell the online schools about this and you will get shut down so fast. 
chemistry
lnK = Ea/R (1/T) + lnA lnK = 111000/8.314 (1/548.15) + lnA so i've tried different things however given im provided with two rate constants and two temperatures im not sure which to use and also i don't have an A value. At first i tried to input one set of data and ... 
chemistry
A certain first order reaction has a rate constant of 5.68 x 10–3 s–1 at 139°C and a rate constant of 8.99 x 10–1 s–1 at a temperature of 215°C. Ea = 111 kJ mol– q1) What is the value of the rate constant at 275°C? q2) ... 
chemistry
oh wait sorry responding to wrong question 
chemistry
yeah i figured out what was wrong I used that same process the entire time but was converting 275kj wrong i was always out by a factor of 10. haha 
algebra
3+30 
English
well thank you for trying 
English
reed can you help please? 
English
8. which of the following quotes from "the morning of june 281948" best describe the aversion that the public felt toward Shirley Jackson's short story "The lottery" a. "as a matter of fat when I read it over later I decided that except for one or ... 
SS
That is the fake ms sue. ^^^