Thursday

July 24, 2014

July 24, 2014

Total # Posts: 1,729

**language**

is this a sentace......... A block of four different,colorful stamps that commemorate Earth day.

**Calculus**

If a, b, and c are digits for which 7 a 2 -4 8 b ========= c 7 3 then a + b + b = _______ (A) 14 (B) 15 (C) 16 (D) 17 (E) 18

**Calculus**

If a, b, and c are digits for which 7 a 2 -4 8 b =========

**Calculus**

If a, b, and c are digits for which 7 a 2 -4 8 b =========

**Calculus**

If 2 to the 1998 power - 2 to the 1997 power - 2 to the 1996 power + 2 to the 1995 power = k times 2 to the 1995 power, what is the value of k? (A) 1 (B) 2 (C) 3 (D) 4 (E) 5

**Calculus**

Four red balls and two white balls are placed in a jar. One ball is randomly removed and replaced with a ball of the other color. The jar is then shaken, and one ball is randomly selected. What is the probability that this ball is red? Express your answer as a common fraction.

**Calculus**

When Rachel divides her favorite number by 7, she gets a remainder of 5. What will the remainder be if she multiplies her favorite number by 5 and then divides by 7?

**Calculus**

Harry has 3 sisters amd 5 brothers. His sister Harriet has a S sisters and B brothers. What is the product of S and B? (A) 8 (B) 10 (C) 12 (D) 15 (E) 18

**Math**

how do you simplify and combine like terms for this 4(x+5)+3x squared+6(x+1)

**Calculus**

Any help would be much appreciated with the steps involved in each problem given. Thank you. 1) Find derivative if y =cot x + sin x 2) Find derivative if y = (3x+5)^8 3) Find derivative if y = x csc x 4) Find derivative if y = x /3x + 1 (3x + 1 is under a square root(/) 5) ( f...

**Calculus**

Any help would be much appreciated with the steps involved in each problem given. Thank you. 1) Find derivative if y =cot x + sin x 2) Find derivative if y = (3x+5)^8 3) Find derivative if y = x csc x 4) Find derivative if y = x ã3x + 1 (3x + 1 is under the square...

**mathematics**

The larger number of the fourth set of twin primes?

**mathematics**

The Pythagorean masculine marriage number?

**mathematics**

The largest integer that is not the sum of two ot more different primes?

**mathematics**

A number that is neither prime nor the sum of two distinct primes?

**calendar**

The number of months in the Julian calendar?

**science**

What is the difference between height and elevation?

**Chain Rule**

Any help would be much appreciated with the steps involved in each problem given. Thank you. 1) Find derivative if y =cot x + sin x 2) Find derivative if y = (3x+5)^8 3) Find derivative if y = x csc x 4) Find derivative if y = x ã3x + 1 (3x + 1 is under the square...

**calenders**

The number of months in the Julian calender?

**mathematics**

One of two numbers that can be both the area and perimeter of a triangle whose side lengths are a Pythagorean triple?

**mathematics**

The value of a score (as in "four score and seven years ago").

**mathematics**

The base for the hexadecimal system?

**mathematics**

The number of frieze patterns?

**math**

The largest integer that is not a sum of distinct powers?

**athletic**

The number of stages, including the prologue, in the 2005 Tour de France?

**math**

The different wallpaper groups?

**math**

The number feared by Pythagoreans, since it lies halfway between the only two integers that can be both the perimeter and the area of the same rectangle?

**Physics**

a dentists drill starts from rest. after 5.39 seconds of constant angular accleration, it is rotating at a rate of 2.85E4 rpm. through what angle did it rotate in the process? (i just dont know what formula to use)

**physics**

the tub of a clothes washer goes into its spin-dry cycle starting from rest and reaches an angular speed of 6.50 rev/s in 7.85 seconds. at this point, the person doing the laundry opens the lid, and a safety switch turns off the washer. the tub then slows to a stop in 15.07 se...

**Word Problem**

A gallon of paint can cover an area of 385 square feet. How thick is the coat of paint in inches. HELP PLEASE!!! thanks

**Math**

that gives me a rather large answer, i believe its thickness would be less than an inch

**Math**

A gallon of paint can cover an area of 385 square feet. How thick is the coat of paint in inches. HELP PLEASE!!! thanks

**science**

suppose you have 100grams of radioactive plutonium-239 with a half-life of 24,000 years. how many grams of plutonium-239 will remain after: A)12,000 years B)24,000 years C)96,000 years how do i do this??????

**AP Euro**

Explain this quote, "The first lesson in history in modesty."

**Chemistry**

A particular gas has a desnity of 11.98 g/dm^3 when the pressure is 138.4 kPa at a temp of 175 degrees F. What is the GMW of this gas? If it is a diatomic gas can you identify the element? dm^3 = L. so it's 11.98 g/L. then i converted 139.4 kPa to 1.37 atm. then i converte...

**Biology**

Your body would not have enough time to absorb the nutrients from the food, and for the long run, you would die.

**reading**

I have to do a story map for the book Honus and me by dan gutman..they are asking for the place and the setting ..wouldnt that be the same thing

**science**

what is a sample of a gas

**Humanities**

Where there toilets in the middle ages?

**algebra 2**

1-x ---- 2x

**Math**

Okay .. i have a trig question for some floor plans that im trying to do. I have a right angle . /| / | c / | a /___| b I have the lengths of side c and b. Both Being 28ft in length. What is the length of side a? The way you have drawn it, or tried to draw it, c is the hypoten...

**Chemistry - Kc question**

What would happen to Kc values in an experiment if the Beer's law constance (k) value used was low ( e.g you used 4000/M when the actual constant had a value of 5000/M)? Explain your answer Absorbance = k*length cell*concentration Cell length is constant. You read an absor...

**Physics -- Electromagnetic**

A 7.4 Ù square loop, whose dimensions are 4:5 m x 4:5 m, is placed in a uniform 0.093 T magnetic field that is directed perpendicular to the plane of the loop The loop, which is hinged at each vertex, until the separation between points C and D is d = 2:5 m. The p...

**Physical Geography**

1-if a person's line of vision is at the top of Building 121 feet high, how far out to sea could a person see with a good telescope? 2- the light in a lighthouse is 144 feet above sea level. How far does the light extend before it dips below sea level? 3- if an observer is...

**science**

Please help this is worth a big grade and is due tomorrow stoichiometry calculation- Na weighs .53g water is 91.92 ml Patm= 30.03 in Hg Gas Law Calculation same info as above Balanced Chem. equation same info as above Unit conversion setup and calculation same info as above

**biology 12**

is there chromosome replication in mitosis? i know theres one in meiosis, im just not sure for mitosis. Yes See: http://www.uic.edu/classes/bios/bios100/lecturesf04am/lect16.htm and scroll down to: Mitosis in a Nutshell

**Biology**

I need to illustrate a cell starting out with 3 chromosomes each, it replicating, and in the end, having 4 cells. (Meiosis). Could someone explain it to me, please? easy go on internet/google, type in meiosis search for pic, theyshow you the steps

**Biology**

Can girls get pregeant if they have sex before they start their period? I'm not at all asking from a sex-ed point of view, i'm asking from a biological point of view. I mean, when girls menstrate, their chromosomes repliciate when replacing the eggs, right? And to get ...

**Biology**

Larry is brought up on paternity suit charges as the father of baby Pat. Baby Pat has type O blood, and her mother has type B blood. if Larry has type A blood, can he be Pat's father? (Hint: think about the possible genotypes that can produce types A, B, and O blood and wo...

**Biology**

Joe has freckles but Sue does not. Both have attached earlobes. Some of their children do not have freckles. Freckles and earlobes are inherited independently. What is Joe's genotype? What is Sue's genotype? What is the chance that their next child will have both freck...

**Biology**

Kim who is heterozygus for polydactyl (6 fingers and toes) marries Tony who is homozygous normal (5 fingers and toes). What is Kim's genotype? What is Tony's genotype? What is the chance of having children with 6 fingers? Please include the Punnett Square. let FT be fo...

**physics**

I have to build a mini solar car for a school project and i have three solar cells that i bought. whenever i hook up the solar cells i get a reading between 1.5-1.8 volts, but when i hook it up to the motor it wont start it. According to the box the motor only requires 1.5v fo...

**Business, Linear Programming**

This post may be a little lengthy, so please bare with me if you can help. The problem is: A cruise liner has 4 classes of accommodations. Following are the # of reservations made, # of reservations available, and cost per room for each class: Super Deluxe, 100, 160, $3000 Fir...

**English**

I am doing research paper about stocks and manipulations, but I could not found resources for my researches... That talks about how the media affect the stocks to go up and down ……. Thanks very much You are searching for information that is so specific that you have ...

**finance**

Junior debt is debt that has been more recently issued, and in bankruptcy it is paid off after senior debt because the senior debt was issued first

**English**

I am looking for article talk about bird flu? also if you can tell me about the companies that tell that people who afraid from the bird flu to buy their product( what i mean by that how they manipulating their products) Here's a collection of articles about bird flu: http...

**help math**

Find the equivalent measure. 45 feet=___________yards show work Isn't there three feet in a yard. So multlply by 1yard/3feet. so its 3

**math**

If a rule is (3x,y) and a scale factor of 4 is used to transform it , what will the new rule be??? Show work 12x, 4y?

**Chemistry**

Jiskha, you're a friggen retard that knows nothing about anything. Wow your one dumb kid. If you have a question, please post it and give us your thoughts on your approach. If not.....

**Bus law**

In 1991 the Tailhook Association (mostly male military aviators) hosted their annual convention at the Las Vegas Hilton Hotel, despite the fact that they had known that during previous Tailhook conventions rowdy men in the hotel hallways had accosted young women. There was an ...

**English**

A-Polygamy should be legalized. B-The voting age should be lowered to sixteen. C-The prison system should give greater emphasis to the punishment of in mates than to their rehabilitation. D-Doctors and clinics should be required to notify parents of minors when they prescribe ...

**Geog**

2- at sea level the air temperature is 80 degree F. this air reaches the dewpoint at 6,000’. The air continues to rise, pushed up by trade winds, over a mountain that is 12,000’ high. If the dry adiabatic rate is 5.5 degree F/ 1000’ and the wet adiabatic rate is...

**Geog**

if the temperature at sea level is 70 degree F , according to the normal of average lapse rate of 3.6 degree F/1000', the temperature at 10,000' would be what? show work plz Please note that we don't do students' homework for them. Once YOU have come up with a ...

**global studies**

because canada is such a long way from the equator,much of the country has a climate that is? http://www.google.com/search?q=canada+climate&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA I live in southern Ontario, the province where about 40% ...

**pre-algebra**

which measurement is the largest. 14mm or 1cm 1cm is 10 mm. It is time you learned this. how do you do this??? you know??

**Business law? torts**

I am looking for newspaper article describing any torts? Or I will happy if u do that for me, if u do so what is the article What is the “ issue”? Does it meet all of the requirements in your opinion, based on the facts you have? How should the court rule? What court...

**Physics (thx drwls, bobpursley)**

After reaching terminal velocity, a raindrop of m=3.06E-4kg falls vertically down a distance of 500m. a)what is the work done by the force of gravity on the raindrop? sol) since the displacement is in the same direction as the force, the work done is Fcos90 = 0. (correct?) b) ...

**physics**

A force of 8 N acts on a 2 kg object as it is displaced along the x-axis. The speed of the object when it is at x= 2m is 5 m/s. a) what is the net work done by F(x) on the object as it is displaced from x=2m to x=8m? sol) 8m - 2m = 6m; 6m * 8N = 48 J b) What is the object'...

** Geography and weather**

I am looking for websites …. About Geography that shows the weather in most cities in California... For example: City of Stockton, Los Anglos but it most shows: - Temperature. - Pressure - Relative Humidity - Due point Temperature - Air pressure - What temperature of clod...

**Physics: Work**

1st question: I was solving a question and I was asked the work done by friction. It is natural that work done by friction (a retarding force)should be negative and in my answer it was. However, just to be sure, work can be negative? 2nd question: A block of m = 2.00kg is movi...

**Calculus-Limits**

Okay, i posted this question yesterday, however, I did not really understand the answer I received. If your the one who answered my question, could you please elaborate. If not, could you try to answer this tough, for me, question. Thanks a lot. lim x-->0 Square root (1 + t...

**Math-Limits**

sqrt(1+tan x)-sqrt(1+sin x) lim all divided by x^3 x-->0 Use that Sqrt[1+x] = 1+ 1/2 x + 1/2 (-1/2)/2 x^2 + 1/2(-1/2)(-3/2)/6 x^3 + O(x^4) You can thus write the numerator as: 1/2 [tan(x) - sin(x)] - 1/8 [tan^2(x) - sin^2(x)] + 1/16 [tan^3(x) - sin^3(x)] + O(x^4) Note that...

**Math-Limits**

sqrt(1+tan x)-sqrt(1+sin x) lim all divided by x^3 x-->0

**5th grade science**

What volume of helium would be in a baloon the size of a soft drink? The same volume that the soft drink occupies.

**math**

Got it...thanks for the help

**math**

Fifteen percent of the seniors voted for Joe. If 289 seniors voted for tehother candidates, how many seniors voted in the election? Let the total number voting be N. 0.85 N = 289 Solve for N

**Physics**

The system of blocks of masses m1=3kg and m2 = 1.80 kg are connected by a string as shown. Mass m rests on a rough surface of unknown coefficient of kinetic friction. After the masses are released, they move with an acceleration of 2.80 m/s^2 (m1 moves to the right, m2 moves d...

**Statistics**

An important part of the customer service responsibilities of a natural gas utility company concerns the speed with which calls relating to no heat in a house can be serviced. Suppose that one service variable of importance refers to whether or not the repair person reaches th...

**Statistics**

A specially equipped trauma emergency room at a hospital has been in operation for 40 weeks and has been used a total of 240 times. Assuming the weekly pattern of demand for this facility is Poission, compute the following: 1) The probability that the room is not used in a giv...

**Statistics**

A sign on the gas pump of a certain chain of gasoline stations encourages customers to have their oil checked, claiming that one out of every four cars should have its oil topped up. What is the probability that exactly 3 of the next 10 cars entering a station should have thei...

**Math**

Is 22.4 bigger than 2.24?

**Geog**

Why does each time zone extend 7 1/2 degrees on each side of central meridian rather than extending from 0 degrees to 15 degree? Why do you think it is?

**more physics**

in the equation P= 2m/ ne^2 t what do these symbols mean? p - resistor m - mass of e- n - ?? e - electron charge>?? t - time between collisions??

**Physics URGENT**

5uC charges are at the base vertices of an equilateral triangle 0.4m on a side. What is the electric field at the third vertice? im not completely sure how to start that.. don't i need the force to calculate the x&y components? NO. Figure E directly from a charge. Evertica...

**Vague Physics**

Does anyone know what the laws of conservation are when dealing with resistors? Well, I guess you can vaguely state if you have, for example, 2 resistors in series: then, in accordance with the law of conservation of energy, the voltage drop across each resistor (the energy us...

**Physics**

Three positive particles of equal charge +11.o micro C, are located at the corners of an equilateral triangle of sides 15.0cm. Calculate magnitude and direction of the net force on each particle. See answer below at your original post thanks Dan.. i dont think thats how we wer...

**trig/physics**

Three positive particles of equal charge +11.o micro C, are located at the corners of an equilateral triangle of sides 15.0cm. Calculate magnitude and direction of the net force on each particle. DUUUUUUUUUH! THIS IS SO EASY! LOOK IN YOUR BOK, IDIOTIC DUDE! R U A BOY AND HOT, ...

**Geography**

If you left New Orleans ( 30 degrees N, 90 degrees W) at 4:00 am on Friday Dec. 31, and traveled for 12 hours before arriving in Baku, Azerbaijan ( 40 degrees N, 30 degrees E) , at what time and on what day would you arrive in Baku? ( show work pleas) Thank you for using the J...

**Geography**

A traveler leaves Lima, Peru ( approximately 12 degrees S. Lat. And 90 degrees W. long.) at 8:00 am on Tues. Oct. 3rd and travels for 14 hrs before arriving in Sydney, Australia ( approx. 34 degrees S and 150 degree E). what time and what day would the traveler arrive accordin...

**Trigonometry**

the voltage E in volts in a circuit after t seconds (t70) is given by E=12 sin(120pi times t). After how many seconds does the voltage first reach 6 volts?

**Trigonometry**

evaluate sin^-1(negative square route of 3over2) in radians.

**trig**

give exact value of cos 75 degrees. give exact value sin 15 degrees. give exact value sin 225 degrees. You will have to use the addition relations here. Notice 75 is 30 +45, 15 is 45-30, and 225 is 180 + 45. I will be happy to critique your work.

**trig**

convert 80 degrees into radians 80 deg *2PI rad/360 deg = ?

**Trigonometry**

Evaluate sin^-1(square route of 2over2) give the answer in radians. Please i really need this question. can you help me?

**math**

3x-4=-2(3x+5) 3x-4=-2(3x+5) clear the fraction. 3x-4=-6x-10 add+6x+4 to both sides. 3x-4+6x+4=-6x-10+6x+4 9x=+4-10 Can you take it from here? 3x-4=-6x-10 9x=-6 x=-2/3

**help**

HELP ME!!! with what? sorry! what is a chemical symbol? thanks webelements heres a link to a chemistry/science site. thanks a bunch! :] Can you help me find the answers for these question? Explain why: 1.flammable substances like petrol should not be placed near naked flames

**Physics help!!!!!!**

a. Pguage=pgh=1.025E3(9.8)(35)=351575n/m2 b. Pabsolute=Po+Pguage=452575 c. gives you density and volume so convert to kg as the mass. T=mg=1587.6 N d. Increase F=ma, so when it is accelerating there is a greater force pushing down on it

**probability**

Kevin has 11 CDs in his glove compartment. Six are rock and 5 are rap. He selects 3 cds at random. What is the probability that he picks at least 2 rap cds? Pr (two)=5/11 * 4/10 * 6/9 Pr (three ) =5/11 * 4/10 * 3/9 add those. Not quite bobpursley. There are 3 ways to pick 2 ra...

**probability**

wooden balls are numbered 1-75. Five balls are drawn at random. What is the probability of drawing 5 consecutive numbers if no replacement occurs.? The first ball has a 1/75 chance of being selected. The second ball can be from either above or below the first, so it has a 2/74...

**maths**

I have y=5sin(4x-pie/2). I need too find phase shift. I know c/b is shift. This is pie2/4=.392, but does not equal my answer and I don't know direction it should go. Can anyone help? What do you mean by c/b? What do you mean by pie2/4=.392? What phase shift are you trying ...

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