Saturday

August 29, 2015
Total # Posts: 6,779

**calculus**

a colony of bacteria living on a petri dish under optimal conditions doubles in size every ten minutes. At noon on a certain day, the Petri dish completely covered with bacteria. At what times (to the nearest hour, minute and second) was the percentage of the plate covered by ...
*August 27, 2015*

**finite**

the probability that a randomly selected 4 year old male feral cat will live to be 5 years old is 0.87886. (a)what is the probability that two randomly selected male 4 yr old cats will live to be 5.(b) what is the probability that six randomly selected male cats will live to ...
*August 25, 2015*

**Science**

You have 75.0 mL of a 2.50 M solution of Na2CrO4 (aq). You also have 125 mL of a 2.15 M solution of AgNO3 (aq). Calculate the concentration of NO3 when the two solutions are added together.
*August 22, 2015*

**Quadratics/ Algebra**

a fraction is such that the numerator is seven less than the square of the denominator. if six is added to the numerator and on to the denominator the result is 2. Find the fraction
*August 21, 2015*

**le**

a fraction is such that the numerator is seven less than the square of the denominator. if six is added to the numerator and on to the denominator the result is 2. Find the fraction
*August 21, 2015*

**Algebra**

Factor completely: X^3n+y^3n Do I factor it as a cube? Can't figure it out
*August 15, 2015*

**Entrepreneurs**

If switching to fast replenishment compared to holding inventory in a dc (distribution center). Is this: Operational? Tactical? or Strategic?
*August 13, 2015*

**Chemistry**

I read that site before coming here, I still didn't understand it
*August 12, 2015*

**Chemistry**

Can someone explain to me what an intermediate product is and give me and example?
*August 12, 2015*

**algebra**

Find the dimensions of the rectangle meeting the specified conditions
*August 8, 2015*

**algebra**

The perimeter is 38.8 millimeters and the length is 2.4 times the width. (Round your answers to one decimal place.
*August 8, 2015*

**computer programming**

Boardman College maintains two files—one for Sociology majors and another for Anthropology majors. Each file contains students' ID numbers, last names, first names, and grade point averages. Each file is in student ID number order. The college is merging the two ...
*August 8, 2015*

**Physics**

so i need to calculate the moment of inertia of the pulley and the angular acceleration of the pulley. mass A = 9kg Mass B = 15kg Inner pulley= Mass 3kg R= 6cm Outerpulley= mass 7kg R=12cm both are disks glued together. it is a composite pulley with two masses hanging. Mass A ...
*August 8, 2015*

**Physic**

so i need to calculate the moment of inertia of the pulley and the angular acceleration of the pulley. mass A = 9kg Mass B = 15kg Inner pulley= Mass 3kg R= 6cm Outerpulley= mass 7kg R=12cm it is a composite pulley with two masses hanging. Mass A on the outer pulley held by a ...
*August 7, 2015*

**Statistics **

Suppose a multiple-choice test has 10 questions each with 5 choices. If a student guesses randomly. What is the probability that they get an B or better. ( they get at least a 80% on the exam) make sure to declare a binomial random variable and show all work
*August 5, 2015*

**life science**

Investigation to determine whether expired air contains carbon dioxide how should state the method,step by step for the experiment
*August 3, 2015*

**Chem**

At 1 atm, how much energy is required to heat 37.0g of H2O at -24.0 C to H2O at 155.0 C?
*July 24, 2015*

**History **

How many amendments were originally proposed and submitted to Congress as the initial draft of the Bill of Rights? • A. 12 B. 8 C. 15 D. 10 what will be the answer
*July 23, 2015*

**History **

Under most domestic search warrants what legal standard must be established before a warrant will be issued? A. Reasonable suspicion B. Reasonable cause C. Certiorari D. Probable cause any one sure of the answer
*July 23, 2015*

**Calculus**

Can someone explain how cos(X)/ square root (sin (X)) is 2 square root sin(x) +c Thanks!
*July 23, 2015*

**Geometry **

Determine whether a tangent line is shown in the diagram, for AB = 7, OB = 3.75, and AO = 8. Explain your reasoning. (The figure is not drawn to scale.)
*July 17, 2015*

**math**

10 23/99 I do this by taking the 23/100 and subtracting 1 from the denominator to get 23/99. If you had 10.33333 I would put 3/10 minus 1 from denominator to get 3/9 or 1/3.
*July 15, 2015*

**physics**

A student is thrown in a lake by his teacher, the student has a mass of 70 kg and a volume of 80,000 cm^3. Would the student sink or float? What is the net force on the student? What is the density of an object that has a mass of 2000 kg and a volume of 1.5 m^3? Would it sink ...
*July 14, 2015*

**physics**

A picture hangs on the wall suspended by two strings, as shown in the figure, with θ = 65°. The tension in string 1 is 1.3 N. (a)Is the tension in string 2 greater than, less than, or equal to the tension in string 1? Explain. (b) Verify your answer to part (a) by ...
*July 12, 2015*

**physics**

A baseball player slides into third base with an initial speed of 7.75 m/s. If the coefficient of kinetic friction between the player and the ground is 0.45, how far does the player slide before coming to rest?
*July 12, 2015*

**physics**

A 320 N bench is 2.40m long. The legs are .30m from each end and weigh 15.0 N each. If 3 persons weighing in order ,500 N, 750N, and 1000N sit .40m, 1.20m, and 2m respectively from one end of the bench, what downward force must each set of legs exert on the floor?
*July 12, 2015*

**math**

distance = rate x time + rate x time 22 = 30(x) + 18 (1-x) 22 = 30x + 18 -18x x = time of car Find and multiply it by 30 to find distance traveled in the car.
*July 11, 2015*

**vocabulary**

The couple ordered four hors d'oeuvres at the wedding. Did you just want errors corrected? just caps and spelling?
*July 11, 2015*

**math**

You want to take your 3 equations in 3 variables to 2 equations with the same 2 variables. Since the first equation has x and z, lets see if we can eliminate the y by combining the 2nd and 3rd equations. To eliminate y you need the coefficients to be equal and opposite. So you...
*July 10, 2015*

**prob & stat**

3, 14 6, 10 or 6, 14 7, 10 or 7, 14 10, 14 It looks like there are 6 possibilities that meet this criteria because they all add up to at least 14 which means 14 or more years If we choose two out of 5 Use a combination of 2 chosen from 5 which is 5!/(3! 2!) = 10 choices ! ...
*July 10, 2015*

**Probabilities**

What you did seems correct to me.
*July 9, 2015*

**math**

to simplify .08c = .12d multiply both sides by 100 to get 8c = 12d Now divide both sides by 4 to get 2c = 3d c = 3/2 d c + d 3/2 d + 2/2 d = 5/2 d
*July 9, 2015*

**english **

United Nations, 310, 314, 362 charter of, 311
Declaration of, 309
United States, 225, 238, 275, 289
in Big Four, 322, 325-7
in League of Nations, 299
Lend-Lease policy of, 307
Neutrality of, 305...
*July 8, 2015*

**math**

no it will be C
*July 8, 2015*

**vocab**

1. can be neither seen nor touched 2. has a receiver named 3. has no receiver named 4. expresses highest or lowest degree of comparison 5. add sign of possession to last name 6. indicates time 7. -ly 8. modifies a noun adjective transitive verb abstract noun superlative degree...
*July 8, 2015*

**Math 157**

C=1.75+5p
*July 8, 2015*

**Calculus**

Determine over what interval(s) is the function y=4x-6arctan(x) is concave up/concave down I took the second derivative and ended up with x=0. I do not believe I did this right. IF I happen to be right, wouldn't our answer just be undefined, rather than having intervals ...
*July 7, 2015*

**Calculus**

do you mean the other way around, when 0<y<2 it is upward, and downward at y>2 When I graph it on a number line (how I was taught) thats what I got, but of course I could be wrong.
*July 5, 2015*

**Calculus **

A particle moves on a vertical line so that its coordinate at time t is 3 y = t − 12t+ 3, t≥ 0 . When is the particle moving upward and when is it moving downward? Find the distance that the particle travels in the first 3 seconds. I got that t=2 and t=-2 and its ...
*July 5, 2015*

**PHYSICS**

'show that a 2.5m length of wire with cross section area 0f 1.0mm and resistance of 0.75ohms has a resistivity o f 3.0 ×10-7'
*June 30, 2015*

**Chemistry**

If 100.0 mL of 0.150 M sodium nitrate is added to 50.0 mL of 0.150 M sodium carbonate, what is the resulting molar concentration of the sodium ion?
*June 26, 2015*

**Math**

My hundreds digit means nothing. Six more than my hundreds digit is my thousand’s and ones less than my thousands’ is my ten thousands. My tens digit is four more than my hundreds and my ones digit is five more than my tens digit. Question: What number am I?
*June 25, 2015*

**Math**

How do you solve the equation for finding the principal when the interest, rate, and time are given? I know the formula P=Interest over rate x time. how do you find the solution or amswer?
*June 19, 2015*

**algebra**

Since you cannot divide 4x^2 into 2x+1, the quotient would be zero with a remainder of 2x+1. Which can also be written as 0 (2x+1)/(4X^2 +8X+5)
*June 16, 2015*

**university**

A uniform electric field of magnitude 260 V/m is directed in the positive x direction. A +14.0 µC charge moves from the origin to the point (x, y) = (20.0 cm, 50.0 cm). (a) What is the change in the potential energy of the charge field system?
*June 15, 2015*

**physic**

if you have a intial object going 1m/s to the right then after 1.2seconds its going 0.5m/s to the left. whats is the constant acceleration?
*June 15, 2015*

**Science living environment Regents **

When you change the dna code to mRNA, will A become U or T?
*June 13, 2015*

**Alg 2 HELP!**

x = -b/2a which gives you a turning point which will help you come up with the max or the min. Once you fine x, then you can find y by substituting back into the original equation. Range can also be found by using this turning point.
*June 12, 2015*

**Statistics**

The total area under the control distribution curve is equal to a probability of what?
*June 11, 2015*

**Math/Physics**

No way to solve?
*June 6, 2015*

**Math/Physics**

Given the following vectors, where Vector A is 6.3 meters and Vector B is 3.5 meters, determine the magnitude of the following vector sums: A+B, A-B, B-A I tried to do magnitude such as A+B = square root (6.3)^2+(3.5)^2 = 7.2 then A-B = square root (6.3)^2-(3.5)^2 = 5.2 then ...
*June 6, 2015*

**Chem.**

Thanks
*June 4, 2015*

**Chem.**

A gas bottle contains 0.250 mol of gas at 0.973 bar pressure. If the final pressure is 1.165 bar, how many moles of gas were added to the bottle?
*June 4, 2015*

**paramedic science**

The male person on-scene is complaining of abdominal pain but refuses any treatment or transport going against your advice. He has obvious bruising to his abdomen consistent with a seatbelt injury. Using Queensland Ambulance Service protocols as a guide - discuss what steps ...
*June 4, 2015*

**physics**

A person opens a door by applying a 11-N force perpendicular to it at a distance 0.90m from the hinges. The door is pushed wide open (to 120 ∘ ) in 2.2s How much work was done? What was the average power delivered?
*June 3, 2015*

**physics**

What is the acceleration (in m/s^2) of a vehicle that changes its velocity from 85 km/h to a dead stop in 13 s?
*June 3, 2015*

**physics**

A person opens a door by applying a 11-N force perpendicular to it at a distance 0.90m from the hinges. The door is pushed wide open (to 120 ∘ ) in 2.2s How much work was done? What was the average power delivered?
*June 3, 2015*

**statisic**

I will get you started. You want see if .85 is different from .70 The numerator of your fraction will be: .85 - .70 Always subtract the population proportion from the sample proportion. The .15 has to be divided by the standard deviation. Do you have that formula? The value ...
*June 2, 2015*

**Math**

Christine's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Christine $5.85 per pound, and type B coffee costs $4.40 per pound. This month, Christine made 174 pounds of the blend, for a total cost of $906.25. How many pounds of type ...
*May 31, 2015*

**Reading**

Oh ok is it A then?
*May 28, 2015*

**Reading**

Wouldn't it be the opinion of what you would think a wise person would do?
*May 28, 2015*

**Reading**

Every profession or field invents its own specialized words, in order to express complicated ideas without excessive wordiness.
Business-speak contains some useful phrases, but also suffers from three major problems: unnecessary words, euphemistic words, and ...
*May 28, 2015*

**Reading**

For example, "vis-a-vis" is often used instead of the simpler "in relation to" or "compared to." In this case, the business-speak phrase isn't much shorter than existing phrases, but it is definitely more obscure. This is a step in the wrong ...
*May 28, 2015*

**Reading**

Business-Speak In recent years the business world has coined its own unique, jargon-filled sub- language. This sub-language is often called "business-speak" (or "manager-speak," since some of its most enthusiastic users are managers and executives).
*May 28, 2015*

**English**

United Nations, 310, 314, 362 charter of, 311
Declaration of, 309
United States, 225, 238, 275, 289
in Big Four, 322, 325-7
in League of Nations, 299
Lend-Lease policy of, 307
Neutrality of, 305...
*May 28, 2015*

**English**

Pandas
Eating Habits......................................... 1-15
Reproduction......................................... 16-20
Geographic Areas ................................. 21-22
Endangered Species...
*May 28, 2015*

**English**

Thank you!
*May 28, 2015*

**English**

Count' -verb 1. to list numbers sequentially 2. to add up; enumerate 3. to include in a reckoning 4. to deserve consideration, to have merit -noun 5. the act of counting, a calculation 6. the total number resulting from a count 7. Baseball, the number of balls and strikes ...
*May 28, 2015*

**Language Arts**

I think number one is After you sign the agreement, it is too late, of course, to change your mind.
*May 28, 2015*

**Language Arts**

I think number two is Importantly, some of the best-preserved early human remains have been discovered in peat bogs.
*May 28, 2015*

**Language Arts**

1)The sentence says: After you sign the agreement, it is too late, of course, to change your mind. After you sign the agreement it is too late of course, to change your mind. After you sign the agreement, it is too late of course to change your mind. After you sign the ...
*May 28, 2015*

**English**

That is how I see it. Except for where it says counters, it should say counts.
*May 27, 2015*

**English**

Count' -verb 1. to list numbers sequentially 2. to add up; enumerate 3. to include in a reckoning 4. to deserve consideration, to have merit -noun 5. the act of counting, a calculation 6. the total number resulting from a count 7. Baseball, the number of balls and strikes ...
*May 27, 2015*

**English**

While dragonflies have several traits that inspire wonder, many people believe these flying insects are pests. Dragonflies spend much of their lives around water. They not only lay their eggs in or near the water, but their ??? young also develop in the water. In fact, ...
*May 27, 2015*

**English**

Thank you!
*May 27, 2015*

**English**

Which of the following sentence from the passage contain an opinion A) Snow blowers (also called snow throwers) can make the sometimes-difficult often unpleasant task of clearing snow from sidewalks and driveways much easier. B) Most snow blowers are gasoline-powered, though C...
*May 27, 2015*

**English**

Which of the following would be considered primary sources for this passage? manufacturer product manuals product reviews on the internet manufacturer warranty statements critical reviews in a trade journal Based on the passage, which of the following purchases makes the most ...
*May 27, 2015*

**English**

Snow blowers (also called snow throwers) can make the sometimes difficult, often-unpleasant task of clearing snow from sidewalks and driveways much easier. Before making a purchase, however, it’s best to learn a few snow blower basics. Most snow blowers are gasoline ...
*May 27, 2015*

**Reading**

But I think it could also be persuasive.
*May 26, 2015*

**Reading**

Which of the following writing styles best describes this passage? Descriptive Creative Technical Persuasive is it descriptive
*May 26, 2015*

**Reading**

News reporting Time magazine made waves in 2006 when, instead of selecting a politician, entertainer, or activist as its Person of the Year, it selected "you." The magazine's intention was to illustrate how millions of user-post blogs, videos, pictures, and other...
*May 26, 2015*

**reading**

help
*May 26, 2015*

**English**

Extending her arms over the left-field wall,the baseball plummeted toward the fan,and she caught it cleanly on the fly before displaying the home run ball for all to see. a. Extending her arms over the left-field wall b Toward the fan c On the fly d Before displaying the home ...
*May 26, 2015*

**English**

Then perhaps D. It seems to be the only one left that could start off the paragraph.
*May 26, 2015*

**English**

I meant to say A, is that the one you disagree with?
*May 26, 2015*

**English**

i meant A
*May 26, 2015*

**English**

Which of the following sentence orders best forms an organized, logical paragraph? 1. Planning for a test involves determining the time needed for studying, reviewing notes and previous assignments, and prioritizing the content matter to be studied. 2. Students should ...
*May 26, 2015*

**english**

yes. Thank you
*May 26, 2015*

**english**

In a days work,the employees met their goals for the week. a days" b employees' c day's d employee's i think it is C
*May 26, 2015*

**English**

I did, thank you.
*May 26, 2015*

**English**

nothing else seems to make sense
*May 26, 2015*

**English**

it should still be C right
*May 26, 2015*

**English**

That's how it is
*May 26, 2015*

**English**

Which of the following sentences is punctuated correctly? A carpenter must use certain tools, hammers, saws, chisels, to finish a job. A carpenter must use certain tools hammers, saws, chisels -to finish a job. A carpenter must use certain tools – hammers, saws, chisels ...
*May 26, 2015*

**english**

i meant B, sorry
*May 26, 2015*

**english**

there's a period after the first one also
*May 26, 2015*

**english**

yes please, I guess
*May 26, 2015*

**english**

Which of the following sentences is written correctly? Mother gets a bit of family news, whenever my aunt visits her Mother gets a bit of family news whenever she visits my aunt. Whenever Mother and my aunt visit, she gets a bit of family news. Whenever Mother visits my aunt ...
*May 26, 2015*

**English**

yes, therefore it should be subject-verb agreement. right?
*May 26, 2015*