Tuesday

February 28, 2017
Total # Posts: 416

**Math**

The sum of the ages of Monica and her mother is 70. Monica is 4 less than 1/2 her mother's age. Find their ages. I've been trying to do this for the past 20 minutes. I think the question is wrong, but try for yourself. Help please!

*October 6, 2012*

**History**

Thank you so much! I really needed it and my textbook didn't have it! Thank you!

*September 25, 2012*

**History**

When was Williamsburg, VA founded? And I don't mean when it became the capital of Virginia, I mean when was it created. People keep saying different things, but I'm pretty sure that it's either 1633 of 1632. Please help me! This is for a project.

*September 25, 2012*

**math**

how to count how long of $5000 at 7% interest compounded for the investment to increase to 10000? it will be awesome if you can put the way

*September 2, 2012*

**Math**

Thanks Damon!

*August 29, 2012*

**Math**

If 6 is increased by 4 times a number, the result is 68. A.Write and equation for this situation. B. Solve for the answer. I got 6+4x=68 for the equation, but I'm not sure whether or not x=15.5, or if that is what the question wants me to find. Help please!

*August 29, 2012*

**Math**

There are 300 students in the junior class at a high school. -100 students participate in theater. -70 students are involved in chorus. -140 students play a sport. -35 students are in chorus and are involved in theater, while 15 students play a sport and participate in theater...

*August 22, 2012*

**English**

Yay! Thanks so much!

*August 21, 2012*

**English**

Umm.... He told me? So it would be 'told my brother and me'?

*August 21, 2012*

**English**

Is this sentence correct? If not, could you point out what part is not correct? As an incentive to attend the local college, our father told my brother and I that we could use his company car for transport.

*August 21, 2012*

**Chemistry**

What are two reasons for precise but inaccurate measurements?

*August 20, 2012*

**english**

why did james welch write fools crow

*August 11, 2012*

**Literarture**

How do you write a repsonse to a novel?

*August 11, 2012*

**Chemistry**

I don't know the answer

*August 11, 2012*

**statistics**

how to get answer to geometric mean problem? data: 25.4, 9, 16, 4.25, 8.11, 19?

*July 29, 2012*

**Math**

Ramsay is standing 2906 ft away from the base of the Empire State building that is 1453 ft tall. What is the angle of elevation when she looks at the top of the building? Round to the nearest hundredth.

*July 15, 2012*

**english**

I was asking if that could be included in the analysis.

*May 17, 2012*

**english**

What does this poem mean? (tone, mood, and rhyme scheme) At the Un-National Monument Along the Canadian Border William Stafford This is the field where the battle did not happen, where the unknown soldier did not die. This is the field where grass joined hands, where no ...

*May 17, 2012*

**Physics**

Two persons A and B are walking with a speed of 4 km/h and 5 km/h respectively in the same direction. Find how far will B be from A after 3 hours ?

*May 11, 2012*

**Math**

The monthly car payments for Ted Nelson's last eight customers were $266, $285, $285, $285, $285, $315, $325, and $344. Decide whether the mode represents these data well. Explain. Please help, I think yes, because it has a mode and it makes up half of the data, but I'...

*March 5, 2012*

**math**

Why do my numbers scramble when I post math homework into my classroom forum posting box when I click on post message?

*February 29, 2012*

**English**

The question ask us to analyze this quote, "We've got all the time in the world." What does this mean? How do you explain it?

*February 28, 2012*

**math**

about $0.29

*February 28, 2012*

**Math**

Well, tell him this. A '360' is a skateboarder turning around in a circle in the air, right? tell him to imagine this skateboarder turning in a circle, but slice his movement into 4 sections, so each part of a turn looks like a quarter of a circle. Each section is one ...

*February 28, 2012*

**child care**

children should not be served drinks in containers made of a( Styrofoam c) treated ceramic B) uninsulated d) stainless steel

*February 26, 2012*

**Physic**

Two charges of equal magnitude of 2C and mass of 1.0 g are separated by a distance of 3 mm. Find the velocity of one particle when they are separated by a distance of 4mm.

*January 31, 2012*

**chemistry**

What is the concentration (m) of a solution that consists of 48 grams of copper (2) acetate dissolved in 645 mL of solution?

*December 20, 2011*

**Geometric Proofs**

how to place information to get answer of geometric mean of 25.4, 9, 16, 4.25, 8.11, 19?

*December 13, 2011*

**statistics**

Write the null and alternative hypotheses. Justify which is the claim. A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is less than 900 hours

*December 9, 2011*

**Physics**

1000 N man walks across an 8 meter plank that is suspended from two ropes(one on each side of the plank) that can only support 400N where will the man be when the plank breaks?

*November 7, 2011*

**6th grade spelling**

1. summary 9. voluntary For 3-8, think of the relationship between the first 2 words, then apply that relationship to the last 2 words. For number 3, start and begin are synonyms. Find a synonym for finish, which is conclude, and there you have it! A complete analogy! Do the ...

*November 7, 2011*

**English 10**

Ca you at least tell us what the question is asking for? What key event are they taking about? And in the story's don't really tell us what there response was after that important event, so what do we do? What i'm trying to say is can you please explain the ...

*November 3, 2011*

**Economics**

Total cost and total variable cost are parallel, yet average total cost and average variable cost are not parallel. a. Demonstrate mathematically that ATC and AVC are not parallel. b. Show mathematically that when both ATC and AVC are falling, ATC falls faster than AVC, and ...

*October 31, 2011*

**Economics**

Consider the production function Q= 20K^(1/2)L^(1/2). The firm operates in the short run with 16 units of capital. a. The firm's short-run production function is Q=? b. The average product of labor function is AP=? c. The marginal product of labor function is MP=? d. Show ...

*October 31, 2011*

**Economics**

Total cost and total variable cost are parallel, yet average total cost and average variable cost are not parallel. a. Demonstrate mathematically that ATC and AVC are not parallel. b. Show mathematically that when both ATC and AVC are falling, ATC falls faster than AVC, and ...

*October 31, 2011*

**Statistical significance (Chi squared)Please check**

I did a biology experiment where I need to analyze the statistical significance of betweeen a data set. My experiment consisted of measuring the effects in photosynthesis and cellular respiration by exposing solutions with leaf discs to different light wavelength. For the ...

*October 30, 2011*

**Please check!**

Please check this!

*October 30, 2011*

**Statistical significance test**

I did a biology experiment where I need to analyze the statistical significance of betweeen a data set. My experiment consisted of measuring the effects in photosynthesis and cellular respiration by exposing solutions with leaf discs to different light wavelength. For the ...

*October 30, 2011*

**Calculating Chi Squared**

did a biology experiment where I need to analyze the statistical significance of betweeen a data set. My experiment consisted of measuring the effects in photosynthesis and cellular respiration by exposing solutions with leaf discs to different light wavelength. For the ...

*October 30, 2011*

**Calculating Chi Squared**

I did a biology experiment where I need to analyze the statistical significance of betweeen a data set. My experiment consisted of measuring the effects in photosynthesis and cellular respiration by exposing solutions with leaf discs to different light wavelength. For the ...

*October 29, 2011*

**Statistical significance (Chi squared)**

I just want to make sure what I'm calculating this right. The data I got for one time point are 6 and 23 I know the equation for chi^2 is Calculating Chi Squared - Catherine, Friday, October 28, 2011 at 8:15pm I did a biology experiment where I need to analyze the ...

*October 29, 2011*

**Calculating Chi Squared**

I did a biology experiment where I need to analyze the statistical significance of betweeen a data set. My experiment consisted of measuring the effects in photosynthesis and cellular respiration by exposing solutions with leaf discs to different light wavelength. For the ...

*October 28, 2011*

**Calculating Chi Squared**

I did a biology experiment and I have to use the chi^2 method to calculate statistical significance. I got data at different time points and I just want to make sure what I'm calculating this right. The data I got for one time point are 6 and 23 I know the equation for ...

*October 28, 2011*

**Statistical significance**

I did a biology experiment where I need to analyze the statistical significance of betweeen a data set. My experiment consisted of measuring the effects in photosynthesis and cellular respiration by exposing solutions with leaf discs to different light wavelength. Forthe ...

*October 28, 2011*

**Statistical significance**

I did a biology experiment where I need to analyze the statistical significance of betweeen a data set. My experiment consisted of measuring the effects in photosynthesis and cellular respiration by exposing solutions with leaf discs to different light wavelength. Forthe ...

*October 27, 2011*

**Statistical significance**

I did a biology experiment where I need to analyze the statistical significance of betweeen a data set. My experiment consisted of measuring the effects in photosynthesis and cellular respiration by exposing solutions with leaf discs to different light wavelength. Forthe ...

*October 27, 2011*

**english**

I need to do a summary paragraph on a ediorial in a newspaper or magazine .and i don't were to start in writing the paragraph and the subject i choose waw sex,slavery in america on one girls nightmare

*October 10, 2011*

**math**

1500 and 1800

*October 5, 2011*

**algebra**

2(a-4)=-2 a-4=-1 a=3

*October 2, 2011*

**Biology**

explain the progression of the atmosphere from prebiotic to its current makeup

*October 2, 2011*

**arithmetic**

State whether the following sequence is arithmetic, geometric, or neither. 10, 10.25, 10.50625, 10.76890625, .... (Points : 1) arithmetic sequence geometric sequence neither

*October 2, 2011*

**math**

A store mixes Kenyan Coffee worth $11 per Kilogram and venezuelan coffee worth $14 per Kilogram. The mixture is to sell for $12 per kilogram. Find out how much of each should be used to make a 396-Kilogram Mixture

*September 27, 2011*

**Ciollege algebra**

Suppose that X liters of 38% acid solution are mixed with y liters of a 42% solution to obtain 100L of a 39% solution. One equation in a system for solving this problem is x+y=100. Which one of the following is the other equation? A. 42x+38y=0.39*100 B 0.38x+0.42y=0.39*100 C. ...

*September 27, 2011*

**math**

Simplify and write each variable as an expression with positive exponents: ((-24x^9)/(8b^7))^4 = c((x^m)/(b^n))

*September 21, 2011*

**Math**

Jake is planning to fence his garden. His garden is 10 feet long and 5 feet wide. What is the amount of area Jake wants to fence? Is this a perimeter or area question? That's all I need.

*September 18, 2011*

**Calculus**

Yes, you are right Thanks, I just found it! =)

*September 15, 2011*

**Calculus**

Please help? Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis). Find the formula for F(a).

*September 15, 2011*

**Calculus**

Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis). Find the formula for F(a).

*September 14, 2011*

**English**

The answers are A,C,C,A

*September 11, 2011*

**Mechanics**

A tension test was performed on a steel specimen having an original diameter of 12.5 mm and gauge length of 50 mm. Using the data listed in the table, plot the stress–strain diagram, and determine approximately the modulus of toughness. Use a scale of 20 mm-50 MPa and 20 ...

*September 10, 2011*

**Calculus**

Sorrr, I didn't ask what to find. I have to Find the formula for F(a).

*September 10, 2011*

**Calculus**

Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis).

*September 10, 2011*

**Calculus**

Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis). Find a formula for F(a).

*September 9, 2011*

**Math**

what algebra

*September 4, 2011*

**Geography**

I didn't find much... But I did find the Balcones Escarpment! Is that right?

*August 30, 2011*

**Geography**

What are some major landforms by Wichita Falls, Texas?

*August 30, 2011*

**math**

I think it's 44 if you mean add the 2 digits together to get the summ.

*August 24, 2011*

**MATH HELP!!!!!!! :(**

This is a riddle, and I'm supposed to find a 5-digit number from it..... My thousand's digit is the first that is perfect, but if you're not happy with that, it's also the product of the first two primes. My units digit is the odd of those two primes, and if ...

*August 24, 2011*

**Coordinate system**

XComplete the table of values for the equation 8x+2y=80 xy 0? ?0 2? that is what I got so far, please help me get the rest

*July 19, 2011*

**Linerar Equations in 2 Variables**

Complete the ordered pair for the equation y=-10x+18 I have one of the ordered numbers given to me by my instructor, I have to come up with the first one, this is excactly how he gave it to me, but I really don't understand this...Can someone please help me understand it ...

*July 19, 2011*

**Basic Algebra**

A new cruise ship line has just launched 3 new ships: the Pacific Paradise, The caribbean paradise, and the mediterranean paradise. The carribean paradise has 32 more deluxe stateroooms than the pacific paradise. The Mediterranean paradise has 37 few deluxe staterooms than ...

*July 16, 2011*

**Basic Algebra**

Thanks for the help :)

*July 16, 2011*

**Basic Algebra**

solve the equation m, and check the solution: 5/6x-1/5x+4=7/10x

*July 16, 2011*

**Basic Algebra**

solve the equation: 16((3x+7)=4(12x+8)

*July 16, 2011*

**Basic Algebra**

solve. Cx+Hy=M, for x

*July 12, 2011*

**Basic Algebra**

A box to hold pencils measures 5.8 inches by 5 inches by 4 inches high. Find the volume of the box.

*July 12, 2011*

**Basic Algebra**

if 5 is added to a number and the sum is tripled, the result is 27 more than the number. Find the number

*July 10, 2011*

**Basic Algebra**

solve the equation & check your solution: 2/5x-9/25x=5

*July 9, 2011*

**Basic algebra**

Solve the equation: 3(-2x+1)=-5(x+1)

*July 9, 2011*

**Basic Algebra**

I have to solve the following equation and check my work. Not sure how to do this if someone oculd help me out. The problem is (17b-5)-8(2b+4)=-6

*July 9, 2011*

**Basic Algebra**

I am having a hard time trying to figure out this problem, if someone could help me...I'd appreciate it: I have to solve the problem 7x-(6x+4)=4

*July 9, 2011*

**trig**

find the least positive value of @. sec (4@+10)cos(3@+17) @=theta

*May 23, 2011*

**Physics Year 7 (Help please)**

Isabella drops a chunk of iron of mass m from the roof of her high school and it accelerates at g. Then she ties two chunks of iron together of mass 2m. Show that when she drops the double chunk, the acceleration of fall is also g. Thank you :)

*May 15, 2011*

**Science**

What two major factors determine the size of a star? Is it a) Gravity and Mass OR b) The force of gravity pulling in trying to make the star as small as possible and the outward pressure from the radiation generated in the core trying to swell it up. Thanks :) Because I'm ...

*May 14, 2011*

**Science**

By what factor would your weight change if the earth's diameter were doubled and its mass were also doubled? Thanks :)

*May 14, 2011*

**Science**

What are two competing effects that determine the size of the star? Please keep the answer short and thank you.

*May 14, 2011*

**Physics**

Just wanted to thank you for answering all my questions even though I was clearly lost during most of this process... I finally got it... Thanks =D

*May 8, 2011*

**Physics**

Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International ...

*May 8, 2011*

**Physics**

So is the period 8222 s? I still don't get why the ansser for the aphelion is wrong...

*May 8, 2011*

**Physics**

Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International ...

*May 8, 2011*

**Physics**

Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International ...

*May 8, 2011*

**Physics**

For a scene in a movie, a stunt driver drives a 1.50x10^3 kg SUV with a length of 4.35 m around a circular curve with a radius of curvature of 0.333 km. The vehicle is to be driven off the edge of a gully 10.0 m wide, and land on the other side 2.96 m below the initial side. ...

*May 8, 2011*

**Physics**

You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space Station. Due to mishandling of units by a technician, you find yourself...

*May 8, 2011*

**Physic**

A 3.8 kg object is supported by an aluminum wire of length 1.9 m and diameter 2.2 mm. How much will the wire stretch?

*May 7, 2011*

**Physics Question**

Here is a demonstration Pascal used to show the importance of a fluid's pressure on the fluid's depth : An oak barrel with a lid of area 0.17 m^2 is filled with water. Along, thin tube of cross-sectional area 4.7×10−5 m^2 is inserted into a hole at the ...

*May 7, 2011*

**Physics**

I'm sorry, I don't understand, you mean this equation: P = 2pi sqrt[R^3/(GM)] won't a be 12,345?

*May 7, 2011*

**Physics**

Thanks, I now get 5481 seconds for the period, then I have to multiply that by 1.5 right? I get 8222 s When you say substitute a for R, you meant for the equation of the aphelion?

*May 7, 2011*

**Physics**

I must be doing something wrong because I typed the answers for a second time and they are wrong, I have only one attempt left, can you please check what I did wrong? For the period what I did was P = sqrt(R^3(4pi^2)/GM) P = sqrt ((6720^3(4pi^2)/(6.674E-11(5.9742E24))) P = 0....

*May 7, 2011*

**Physics**

You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space Station. Due to mishandling of units by a technician, you find yourself...

*May 7, 2011*

**Physics**

I must be doing something wrong because I typed the answers for a second time and they are wrong, I have only one attempt left, can you please check what I did wrong? For the period what I did was P = sqrt(R^3(4pi^2)/GM) P = sqrt ((6720^3(4pi^2)/(6.674E-11(5.9742E24))) P = 0....

*May 6, 2011*