# Posts by Jane

Total # Posts: 1,650

**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 x-axis 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 ...

**Social Studies**

Quit being a B*, Writeacher. They are trying to get figure out the answer. The answer id D by the way. Connexus Quick Check answers: C. A. D. 100% I swear.

**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 C-degree 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 6.26-inch radius and a 10.84-inch 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 pure-breeding white mouse with a long tail was crossed to pure-breeding 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 pure-breeding white mouse with a long tail was crossed to pure-breeding 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 18-10=8

**Math**

10-18=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

**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 ...

**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+4-2x2+6-4=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)/(x-3) 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 25-r2=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. ^^^

**Maths -Logarithm**

Q) what is the hundreds digit in 3^3^3? What are the steps in simplifying this number? Ty

**Algebra**

What is the value of c so that y=x^2+9x+c is a perfect square trinomial? A. 18 B. 9/2 C. 9/4 D. 81/4 My answer is D.

**life orientation**

Help me gyz plz

**maths**

if expressed in square millimeter what is 25 square meter 2:a football pitch which was originally 80m long had it length increased by 20m if the width of 70 m has remained unchanged what is the difference between the old nd d new perimeter of d pitch

**life orientation**

Youth are the one who create or start a crime,corruption is made by businesses we're by they employ relatives although they a unqualified

**Math**

I still don't get it. Could you explain a little more? Thanks Reiny

**Math**

Let f(x) = x^3 + 3x ^2 + 4x - 7 and g(x) = -7x^4 + 5x^3 +x^2 - 7. What is the coefficient of x^3 in the sum f(x) + g(x)? Thanks.

**Absolute and relative change**

In one region the number of students in Math 101 is 20% more than the number of students in Math 123. If there are 480 students in Math 101, how many students are in Math 123?

**Absolute and relative change**

You are charged $279 on your credit card for a hotel stay, you call to complain about the unexpectedly high charge, but are told there are a total of 24% taxes for hotel rooms where you stayed. What was the advertised price of the room before taxes?

**life orientation**

The right of religion or belief

**Business**

The number of square meters in a square rooms floor area exceed the number of meters in the rooms perimeter by 60.Find the side-length of the room.

**math**

In one month a salesman sold a total of 30 cars and trucks. If three times the number of cars sold equals twice the number of trucks sold, how many trucks did he sell?

**Life orientation**

Substance abuse

**life orientation**

Describe the three human rights violation or discrimination you selected. And give at least two examples of such violation or discrimination

**l.o**

Offender will doubt themselves when it comes to building their own career

**math**

Find all x such that x^2+5x<6. Express your answer in interval notation. Thank you!

**math**

Find p such that px^2-12x+4=0 has only one solution. Thank you!!!

**life orientation**

We must treat one another equally and with dignity we are all Africans and humans after all

**life orientation**

I dnt know any answer

**life orientation**

Hlp me gyz

**interest**

Bryan invests $500 in an account earning 4% interest that compounds annually. If he makes no additional deposits or withdraws, how much will be in the account: About how long would it take to double his $500 investment? Round to one decimal place.

**Math/Algebra**

Let f(x) = (3x - 7)/(x + 1). Find the inverse f^(-1)(x).

**Physics**

An ocean liner leaves New York City and travels 26.9 ° north of east for 217 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions (a) due east and (b) due north?

**Social studies**

Thank you so much Andalyn!!

**Physics**

A 66-kg water skier is being pulled by a nylon (Young's modulus 3.7 x 109 N/m2) tow rope that is attached to a boat. The unstretched length of the rope is 20 m and its cross-section area is 2.8 x 10-5 m2. As the skier moves, a resistive force (due to the water) of ...

**Trig identity.**

I need help with verifying these trig identities: 1) sin4x = 4sinxcos - 8sin^3 x cos x 2) cos3x = cos^3 x - 3sin^2 x cos x

**Trig help**

Can someone help me find ALL solutions in the interval [0,2π) for the given equations. Please show work. 1) sin2x = sin2x 2) tan2x +tanx = 0

**chemistry**

how many grams of Zn metal would you use to prepare 6.8g of zinc chloride according the reaction: Zn(s)+2HCl(aq)-> ZnCl2(aq)+H2(g)

**chemistry**

how many grams of Zn metal would you use to prepare 6.8g of zinc chloride according the reaction: Zn(s)+2HCl(aq)-> ZnCl2(aq)+H2(g)