# Posts by ann

Total # Posts: 1,458

**math**

what number has 5 hundreds and 12 tens

*January 26, 2011*

**Algebra 1**

Two sides of a triangle have the same length. The remaining side is one third as long as each of the other sides. If the perimeter of the triangle is 315 cm, what is the length of each side?

*January 26, 2011*

**Algebra 1**

Two sides of a triangle have the same length. The remaining side is one third as long as each of the other sides. If the perimeter of the triangle is 315 cm, what is the length of each side?

*January 26, 2011*

**chemistry**

What does sulfur water, sodium bicarbonate and citric acid yield? Is the sulfur smell H2S and/or in any SO2 given off?

*January 23, 2011*

**Physics**

Driving in your car with a constant speed of 12 m s you encounter a bump in the road that has a circular cross-section. The radius of curvature of the bump is 35.2 m. At what speed must you go over the bump if people in your car are to feel "weightless"?

*January 23, 2011*

**English**

The procedure applies to the assigning of expiry dates for milk products. or The procedure applies to the assignment of expiry dates for milk products. Which is correct?

*January 18, 2011*

**English**

1)as per the guidelines.... 2)per the guidelines... Which is correct?

*January 16, 2011*

**physics**

A ventilation fan has blades 0.25 m in radius rotating at 20rpm. What is the tangential speed of each blade tip? i don't understand how to do tangential speed.

*January 11, 2011*

**statistics**

no uniformly distribution

*January 11, 2011*

**statistics**

the scheduled commuting time on Long Island Rail Road from Glen Cove to New York is 65 minutes. Suppose that the actual commuting time is uniformly distributed between 64 and 74 minutes. What is the probability that the commuting time will be a) less than 70 minutes B) between...

*January 11, 2011*

**Finance**

-a: The dividend yield for AT&T is 3.6%; for Boeing it is 1.6%; and for Johnson & Johnson it is 2.5%. -b: The difference is the expected earnings and dividend growth, with AT&T likely having the lowest expected growth and Boeing the highest expected growth. -c: P/E for Boeing...

*January 10, 2011*

**algebra**

function f(x)=2x^2-3x f(0)= f(-1)= f(2)=

*January 9, 2011*

**probability and statistics**

Is this right? and how can I break it down if needed? A factory’s worker productivity is normally distributed. One worker produces an average of 75 units per day with a standard deviation of 20. Another worker produces at an average rate of 65 per day with a standard ...

*January 9, 2011*

**statistics**

a study of the time spent shopping in a supermarket for a market basket of 20 specific items showed an approximately uniform distribution between 20 minutes and 40 minutes. What is the probability that the shopping time will be a) between 25 and 30 minutes? b) less than 35 ...

*January 6, 2011*

**Math (Reiny)**

Reiny, Thank you so very much!!!

*January 5, 2011*

**Math (Reiny)**

Regarding my question below, when the question talks about digits 0-7 do we include the 0. In other words, are the possible digits 0,1,2,3,4,5,6,7 or 1,2,3,4,5,6,7? Thanks again for your help. How many odd four-digit numbers, all of the digit different can be formed from the ...

*January 5, 2011*

**Math**

Reiny, Thanks but I'm stumped on part 3 of the explanation for the first case. We have used up 2 digits when we move on to the second space but didn't we start with 8 digits (0-7) so I don't understand why we aren't left with 6 choices for the second spot (8-2...

*January 5, 2011*

**Math**

How many odd four-digit numbers, all of the digit different can be formed from the digits 0 to 7, if there must be a 4 in the number? My Answer: There are four options for the last digit (1, 3, 5, or 7). One of the other three digits only has 1 option (for the 4). One of the ...

*January 5, 2011*

**algebra**

4x+9y=52 x=35-5y

*January 4, 2011*

**grade 9 science biology**

how can be measure co2 in atmosphere

*January 2, 2011*

**communication**

selina sanchez, together with her colleagues, presents a competitive market research model for other businesses to follow.

*December 27, 2010*

**Psychology**

I'll look. Thank You.

*December 22, 2010*

**Psychology**

Thank you Ms.Sue. I do understand that, however I'm looking for the technical term. I thought it was spontaneous recovery but it doesn't seem to be a conditioned and uncoditioned response/stimuli. Can you please help me? Thanks.

*December 22, 2010*

**Psychology**

Your three little brothers-John,Peter and James get the same gift for Christmas-an ice fishing pole. Your father is curious about how children learn and decides he will teach each of them using different means. With John, he gives him a verbal lecture. With peter, he ...

*December 22, 2010*

**History**

How and why did Eisenhower use the politics of consensus with Congress to achieve compromise

*December 19, 2010*

**Physics**

A beam of particles have a measured life time of 1.5 x 10-8 s when traveling 2.0 x 108 m/s. What would their lifetime be if they were at rest? My Answer: tm= tp/√(1-(v2/c2)) (1.5*10-8) = tp/√(1-((2*108)2/(3*108)2)) (1.5*10-8) = tp/√(1-((4*1016)/(9*1016)) (1.5...

*December 14, 2010*

**algebra**

Two factors, each with no digit greater than 5, have a product of 16,848. What is the largest possible 3-digit factor satisfying these conditions?

*December 14, 2010*

**algebra**

How many cubic feet are in the volume of a round swimming pool which is 16 feet in diameter and 4 feet deep throughout? Express your answer in terms of pi.

*December 14, 2010*

**Algebra**

The faces on a regular octahedral die are numbered one through eight. What is the probability of rolling 3 sixes in succession? Express your answer as a common fraction.

*December 14, 2010*

**Physics**

A person places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At that point he notices ...

*December 13, 2010*

**Physics**

A person places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At that point he notices ...

*December 13, 2010*

**Geometry**

½ m ےABC =½ m ےPQR

*December 12, 2010*

**Business**

Based on this financial info where a company's Beta Year = 2008, the Company's commons stock = 0.85, the Risk-Free Rate of Return = 5%, and the Market Risk Premium = 6%. Use the dividend growth model to calculate the Company's Common Stock in 2008. Stock 1 = 1.5, ...

*December 9, 2010*

**Pre-Calc**

Can someone please be kind and show me the steps on this? Thanks Find the equation of the circle centered at the origin in the uv-plane that has twice the circumference of the circle whose equation equals (u-5)^2 + y^2 =9

*December 7, 2010*

**chemm**

When a reaction mixture with a total volume of 1180 mL that is 0.0110 M aqueous NaCl was stoichiometrically produced as per the balanced equation, what volume (mL) of 0.0116 M aqueous Ca2+ was required? 3 CaCl2(aq) + 2 Na3PO4(aq) → Ca3(PO4)2(s) + 6 NaCl(aq) Molar Mass (g...

*December 7, 2010*

**chemistry**

If 840 mL of 0.0140 M aqueous Al3+ and 500 mL of 0.0680 M aqueous Br- are reacted, what mass (g) of Br- is produced? Al2(SO4)3(aq) + 3 CaBr2(aq) → 2 AlBr3(aq) + 3 CaSO4(s) Molar Mass (g) Br- 79.904 Al3+ 26.982 Br- 79.904 Molar Volume (L) 22.400 at STP Gas Constant 0.0821

*December 7, 2010*

**Chemistry**

Does HCl form a precipitate with NaClO?

*December 6, 2010*

**physics**

To balance a 40.8-kg automobile tire and wheel, a mechanic must place a 41.7-g lead weight 25.0 cm from the center of the wheel. When the wheel is balanced, its center of mass is exactly at the center of the wheel. How far from the center of the wheel was its center of mass ...

*December 2, 2010*

**Pre-Calculus**

Thank you a 1000 times Reiny!

*December 2, 2010*

**Pre-Calculus**

It is well known that superman can withstand as much as 3 grams of Green Kryptonite indefinitely. However, exposure to more than 3 grams for more than 13 hours is fatal. Assume that Kryptonite decays at an hourly rate of 5.35% If superman is trapped in a room with 6 grams of ...

*December 2, 2010*

**PRE-CALC**

A drug is eliminated from the body through urine. Suppose that for an initial dose of 10 milligrams, the amount A (t) in the body t hours later is given by A(t) = 10(0.8) t a) Estimate the amount of the drug in the body 8 hours after the initial dose. b) What percent of the ...

*December 2, 2010*

**Pre-Calc**

Amount after time t A (t) = yobt Where: yo = starting amount b = growth constant (percent remaining) t = number of time units It is well known that superman can withstand as much as 3 grams of Green Kryptonite indefinitely. However, exposure to more than 3 grams for more than ...

*December 2, 2010*

**thefacility**

003048

*December 1, 2010*

**the staff**

003049

*December 1, 2010*

**PHYSICS**

Thank YOu!

*November 29, 2010*

**PHYSICS**

1)A picture of width 40 cm weighing 40N hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail which is 3 cm higher than the points where the wire is attached to the frame. Find the tension of the ...

*November 29, 2010*

**Chemistry**

A solution that has an osmotic pressure greater than that of red blood cells is called?

*November 29, 2010*

**Chemistry**

What is the concentration, in w/w%, of a solution prepared from 50.0 grams NaCl and 150.0 grams of water? I think it would be 25.0%, but I'm struggling with these new concentration calculations.

*November 29, 2010*

**college, teaching**

obstacles in the first year of teaching

*November 27, 2010*

**Chemistry**

Sodium oxide, reacts with water to give NaOH. A) Write a balance equation? B)What is the pH of the solution prepared by allowing 1.55 g of Na2O to react with 500.0 ml of water? (assume there is no volume change) C) How many milliliters of 0.0100M HCL are needed to neutralize ...

*November 21, 2010*

**Verb tense**

Dinnie does pay bills online each month.

*November 21, 2010*

**health,safety and nutrition**

Why health, safety and nutrition strategies are important ti identify and practice in an early childhood education programs.

*November 20, 2010*

**English**

The packet of biscuits has passed its expiry date or The packet of biscuits has past its expiry date. Or both sentences correct?

*November 20, 2010*

**English**

There is a host of reasons... or There are a host of reasons.... Which is correct?

*November 20, 2010*

**physics**

A person places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At that point he notices ...

*November 13, 2010*

**Chemistry-Please Help!**

I have these 5 chemical equations and I keep getting the same 1:1 ratio on all of them. I must be doing something wrong! KCL + NaNO3 = KNO3 + NaCl HNO3 + KOH = H2O + KNO3 H2O + SO3 = H2SO4 4Na + O2 = 2Na2O 2NO2 = 2NO + O2

*November 11, 2010*

**Chemistry**

What would be the molecular ratio of the following equation? 2NO2 = 2NO + O2

*November 11, 2010*

**algebra**

write the slope-intercept equation for the line that passes through(4,3) and has slope 5/4.

*November 9, 2010*

**FIT**

Joe Nautilus has $120,000 and wants to retire. What return must his money earn so he may receive annual benefits of $20,000 for the next 14 years?

*November 2, 2010*

**Statistics**

What type of data must you collect to conduct a t-test? Why?

*November 1, 2010*

**Algebra**

Suppose you are at the gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation: C(g) = (3.5)g a) Find C(2) b) Find C(5)

*October 28, 2010*

**Physics**

Also it's not 1800, it's 1/800 so it would be: .046kg * 44 = 2.024 2.024/(1/800) It should equal = 1619.2 Check your answer but that should be it, especially if they're asking you in units of N

*October 27, 2010*

**Physics**

Also it's not 1800, it's 1/800

*October 27, 2010*

**English**

With reference to an earlier question:- The liquid is to be scooped at a quarter of the depth of the container it is in. Hence the first sentence is correct? Or is there a better way of phrasing? The liquid should be scooped at a quarter depth of the container? Posted by ann ...

*October 26, 2010*

**English**

1)Please advise us on the status of our application. 2)Please advise the status of our application. Which sentence is correct?

*October 26, 2010*

**English**

The liquid is to be scooped at a quarter of the depth of the container holding it is in. Hence the first sentence is correct? Or is there a better way of phrasing?

*October 26, 2010*

**English**

The liquid should be scooped at a quarter depth. or The liquid should be scooped at a quarter depths. Which is correct?

*October 26, 2010*

**English**

"Your prompt action in providing the information by tomorrow would be appreciated." Is the above sentence correct?

*October 24, 2010*

**English**

Which sentence is correct? 1) Please provide the shelf life information on the following biscuits: - or 2) Please provide the shelf life information of the following biscuits: -

*October 24, 2010*

**English**

Is the following sentence correct? Please provide us with the requisite information on the product.

*October 24, 2010*

**English**

Please expedite in providing all necessary documents. Is this sentence grammatically correct?

*October 23, 2010*

**AED 201**

I think that is where I am confused to. It just says the first technological event in education and then the second for each time period. I have found one website that helped, im not sure if it is the correct information, but it only went up until 2000. I am still looking for ...

*October 23, 2010*

**AED 201**

I am looking for information on the use of technology in school. I need the 1st and 2nd event from 1980, 1990 and 2000. Ive been searching since yesterday. I do not want the answers, just pointed in the right direction. I guess im not searching right or something Thank you.

*October 23, 2010*

**History**

In their reporting of elections, the media tend to place cendidates and issues in the context of

*October 21, 2010*

**Math**

Explain how the digit 1 can have a different values in 111

*October 21, 2010*

**math**

which decimal has the highest number 4.1, 6.3, 0.31

*October 20, 2010*

**Chemistry**

Posted by ann on Sunday, October 17, 2010 at 4:26am. In melting point determination, why shouldn't a substance be re-melted? (i.e. why should we not re-melt a substance that has previously been melted in a melting point tube?)

*October 17, 2010*

**Chemistry**

In melting point determination, why shouldn't a substance be re-melted? (i.e. why should we not re-melt a substance that has previously been melted in a melting point tube?)

*October 17, 2010*

**English**

1) Minimize versus minimise. Which is UK English & which is US English? 2) After cleaning, all waste must be properly disposed of. Is this sentence acceptable?

*October 16, 2010*

**Comm/155**

I am trying to write a brief paragraph using five adverbs and five adjectives in describing my experience with credit and credit cards?

*October 12, 2010*

**chemistry**

A water containing 1x10^-4 mol CO2/L and having an alkalinity of 2.5x10^-4 eq/L has a pH of 6.7. The pH is to be raised to pH 8.3 with NaOH. How many moles of NaOH per liter of water are needed for this pH adjustment? (pK1=6.3 and pK2=10.3)

*October 12, 2010*

**Chemistry**

Is butyl paraben light sensitive?

*October 9, 2010*

**computers**

James was traveling for his job. The internet card provided by his company was not working and he had an important project due that day. James was in a small town about an hour away from the nearest internet kiosk, so he decided to drive around a nearby suburb to see if he ...

*September 30, 2010*

**accounting**

general ledger entry: sold $700 of merchandise (that had cost $220) on credit to Sam's Company.

*September 26, 2010*

**social studies**

what role did geography play in the economic success of new york

*September 24, 2010*

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ? please help. Your answer was no but how do I do this problem? I'm sorry, I mean <,>,or =. Thank You for your help.

*September 22, 2010*

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ? please help. Your answer was no but how do I do this problem?

*September 22, 2010*

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ? please help.

*September 22, 2010*

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ?

*September 22, 2010*

**physics**

A person leans over the side of a deep well and drops a stone that falls freely. After 1.0s she hears the splash of the stone striking the water at the bottom of the well. How deep is the well?

*September 21, 2010*

**AP Chemistry**

4 is correct

*September 17, 2010*

**math**

julie is thinking of an even number between 12 and 29 with digits whose difference is 7? what is the number?

*August 24, 2010*

**Axia Math 117**

I am of need of HELP. I am working on the word problems for AXIA math 117 and I do not understand the first problem. I have listed the information below. I have tried many times and I have not figured this out. My assignment is due tomorrow and I am desperate for help with ...

*August 6, 2010*

**Nutrition, Health, and Safety for Young Children**

What is a good purpose statement for discussing "why health, safety and nutrition strategies are important to identify and practice in an Early Childhood Education Program?

*July 18, 2010*

**Math**

Can someone please check this for mistakes please? y=4(x+3)-2x y=4x+3-2x y=2x+3 2x+3=y 2x=y-3 x=y/2-3 Hopefully I have rearranged the formula y=4(x+3)-2x to express x in terms of y.

*July 7, 2010*

**algebra2**

kathy bicyles 57 km/h faster than carlos. in the same time it takes carlos to bicyle 36 km. kathy can bicyle 57 km. how fast does each bicyclist travel? help please

*June 27, 2010*

**algebra2**

2 + 7 ______ xs power of 2 and x powqer of 2s

*June 27, 2010*

**algebra2**

the simlified product of this is? 10a power of 8.9r power of 4 _______ _____________ 3r power of 2 100a i dunno what to do?

*June 27, 2010*

**algebra2**

find the LCM 21z power of 7 and 63z power of 4? im not sure what im doing? help please?

*June 27, 2010*