Wednesday

May 4, 2016
Total # Posts: 96,195

**Statistics**

A coffee-dispensing machine is supposed to deliver 12 ounces of liquid into a large paper cup, but the costumer believes that the actual amount is less. As a test he plans to obtain a sample of 30 cups of the dispensed liquid. The mean of his sample is 11.5 ounces. The machine...
*April 21, 2016*

**wave optics**

A double slit arrangement is illuminated first with red, then with blue light. a. which one has wider fringes? b. which one produces more fringes?
*April 21, 2016*

**Math**

When rounded to the nearest hundredth which number equals0.61
*April 20, 2016*

**Us history**

The reconstruction finance corporation aimed to
*April 20, 2016*

**Math**

If a seed is planted, it has a 60% chance of growing into a healthy plant. If 6 seeds are planted, what is the probability that exactly 4 don't grow?
*April 20, 2016*

**Statistics**

A test has a mean of 150 and a student performed 1 standard deviation above the mean. What score did the student have on the test?
*April 20, 2016*

**Math**

If a seed is planted, it has a 65% chance of growing into a healthy plant. If 11 seeds are planted, what is the probability that exactly 1 doesn't grow?
*April 20, 2016*

**MATH**

I had this question similar to this 3 days ago it said'Kayla had 5 red cups 1 yellow 3 green 2 blue what was the possibility of green out of 100 i said 50 because that is half more than red
*April 20, 2016*

**Advanced Chemistry**

he vapor pressures of several solutions of water-propanol(Ch3Ch2Ch2OH) were determined at various compositions, with thefollowing data collected at 45C: XH2O Vapor pressure (torr) 0 74.0 .15 77.3 .37 80.2 .54 81.6 .69 80.6 .83 78.2 1.00 71.9 a.) Are solutions of water and ...
*April 20, 2016*

**Pre Algebra**

Kelsey, your totally wrong I just failed. 1)d 2)b 3)a 4)a 5)b 6)a 7)c 8)a 9)c 10)d 11)c 12)d 13)a 14)a 15)b 16)c 17)b 18)d 19)a 20)d 21)a Trust me, you'll get 100% I just failed cause of Kelsey
*April 20, 2016*

**Pre Algebra**

Which polynomial does the model represent? –x³ + 2x² – 3x + 2 x² + x – 2 –x² – x + 2***** –x² + x – 2 Can someone please help me @Ms.Sue @Reed @WriteTeacher
*April 20, 2016*

**Chem**

How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 76.6 moles of water vapor?
*April 20, 2016*

**Geometry**

a pizza restaurant charges $10.00 for a large one topping pizza in the shape of a circle with a diameter of 14 inches. To celebrate the World Series, the resturant decides to bake a pizza in the shape of home plate. The dimensions of the pizza are shown. If the restaurant ...
*April 20, 2016*

**math**

A triangular traffic island has a base half as long as its height. The island has an area of 289 m2 . Find the base and the height.
*April 20, 2016*

**life orientation**

decribe three humans right
*April 20, 2016*

**life orientation**

Kiling of young children
*April 20, 2016*

**life orientation**

Piling of young children
*April 20, 2016*

**life orientation**

Gang violence.child abuse
*April 20, 2016*

**life orientation**

nnnnn
*April 20, 2016*

**life orientation**

Abuse human right
*April 20, 2016*

**Computing**

How can you count the number of items in the array - what do you have to add to this code? <!DOCTYPE html> <html> <body> <p>Click the button to sort the array.</p> <button onclick="myFunction()">Try it</button> <p id="...
*April 20, 2016*

**Brand packaging and design**

12. Rico and Liz are analyzing a project scope. Rico says they should consider the brand's message, identity, and architecture. Liz says they should consider the brand's hierarchy, sustainability, and the impacton the packaging design. Who is correct? A. Neither is ...
*April 20, 2016*

**science**

can you please tell me some alkalis you would have in your house xxx
*April 20, 2016*

**Math**

0-foot ladder is leaning against a wall. The base of the ladder is 2 feet from the base of the building. How far up the building does the ladder fall
*April 20, 2016*

**Math**

What is the probability that washing dishes tonight will take me between 11 and 14 minutes? Give your answer accurate to two decimal places. please help out
*April 20, 2016*

**Launguage Arts**

Which of the following passages from the novel Walk Two Moons best supports the story's theme of hope? 6. A: I asked if I could sit there for a little while, because I wanted to memorize the place B: in the midst of the still morning, with only the sound of the river ...
*April 20, 2016*

**physics**

The (non-conservative) force propelling a 1.40 x 103-kg car up a mountain road does 7.60 x 106 J of work on the car. The car starts from rest at sea level and has a speed of 22.0 m/s at an altitude of 2.50 x 102 m above sea level. Obtain the work done on the car by the ...
*April 20, 2016*

**life orientation**

3human rights violation or discrimination
*April 20, 2016*

**english**

It gives you a big opportumity of jobs
*April 20, 2016*

**Math**

x P(x) 0 0.3 1 0.15 2 0.2 3 0.35 Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places
*April 20, 2016*

**stats**

Given a normal population whise mean is 50 and whise standard deviation is 5, find the probability that a random sample of 25 has a mean greater than 52.
*April 20, 2016*

**Calculus**

A stone is dropped from the edge of a roof, and hits the ground with a velocity of −170 feet per second. Assume the acceleration due to gravity is -32 feet per second squared. How high (in feet) is the roof?
*April 20, 2016*

**american history**

What was one effect that mass transit had on American cities? A. Most urban workers no longer had to live in tenements. B. The number of skyscrapers increased dramatically because there was no room left on the ground. C. Conflicts over ethnic and racial divisions declined ...
*April 20, 2016*

**amerian history**

What was the goal of Americanization programs in settlement houses? A. to combat the belief that native-born white Americans were superior to newcomers B. to help newcomers learn English and adopt American dress and diet C. to blend traditions from immigrants of different ...
*April 20, 2016*

**life orientation**

The rights to life
*April 20, 2016*

**Physics**

A lighter block (2 kg) and a heavier block (8 kg) sit on a frictionless surface. Both blocks are initially at rest. The same force of 4 N then pushes to the right on each block for a distance of 9 m. What are the changes in kinetic energy of the blocks? What are the final ...
*April 20, 2016*

**Physics**

A car is moving such that its kinetic energy is 6.20×105 J. The car accelerates and the engine does 2.90×105 J of work to accelerate the car. What is the final kinetic energy of the car? Ignore energy lost to friction. (Your answer must be accurate to at least 1%. ...
*April 20, 2016*

**Science**

what volume of NH3 gas at s.t.p. is required to neutralise 40cm3 of 2M H2SO4?
*April 20, 2016*

**Life orientation**

Make six suggestions on how to combat the violations of human rights
*April 20, 2016*

**Physics**

If a car can accelerate at a rate of 15 m/hr/sec how long will it take the car to get to 65 m/hr from a dead stop?
*April 20, 2016*

**Math**

About 8% of the population of a large country is nervous around strangers. If two people are randomly selected, what is the probability both are nervous around strangers? What is the probability at least one is nervous around strangers?
*April 19, 2016*

**Chemistry**

hgfhkhvmhgbzxkbchKIZUBHXDcliXbCXHvcyXZCHzhczxhcbszbdchasbcs;cisD;Osfdihsd nyrtdnrfd
*April 19, 2016*

**Geometry- URGENT PLEASE HELP!!**

you are doing a geometry class for Aops and this is the problem this week. STOP CHEATING
*April 19, 2016*

**pre-ap chemistry**

how to make 100 mL of a 0.500 M CuSO4 solution
*April 19, 2016*

**Chemistry**

If a tire can hold 19L of air at 175 kPa and 25° C, what volume of air can the tire hold at 215 kPa and 30° C? Possible answers: A. 13.7 L B. 15.7L C. 23.0L D. 19L
*April 19, 2016*

**Pre-Calc**

Solve the following algebraically. log3(x) + log3(x-2) = 1 Are the solutions 3 and -1?
*April 19, 2016*

**Math**

How many 1/3- cup servings of juice are in a 5- cup container?
*April 19, 2016*

**geomtry**

The figures are similar. The area of one figure is given. Find the area of the other figure to the nearest whole number. The area of the smaller trapezoid is 771 m
*April 19, 2016*

**english**

English is the language of opportunity why bother to teach indigenous language
*April 19, 2016*

**chemistry **

Calculate the standard entropy change for the reaction of calcium oxide with water to form calcium hydroxide: CaO(s) + H2O(ℓ) → Ca(OH)2(s) at 298 K. ∆S ◦ m ∆H◦ f J K·mol? kJ mol? CaO(s) 39.75 −635.09 H2O(ℓ) 69.91 −...
*April 19, 2016*

**science**

2Ag(NO3) + Cu>>Cu(NO3)2 + 2Ag a. how much silver nitrate was there? b. assuming the reaction goes to completion, ie, there is enough silver nitrate, then you get 2 moles siver for each mole of Cu. moles Cu=100/atomicmassCu moles Ag=2* above grams Ag= above*atomicmassAg
*April 19, 2016*

**Physics**

acceleration=v^2/r=1.45^2/1.80 m/s^2
*April 19, 2016*

**Math**

If a seed is planted, it has a 75% chance of growing into a healthy plant. If 7 seeds are planted, what is the probability that exactly 3 don't grow?
*April 19, 2016*

**Social Studies**

So do you guys knew the answers
*April 19, 2016*

**math area**

A rectangular tabletop is 4 ft long and 30 in. wide. Which is the area of the tabletop?
*April 19, 2016*

**Math**

so 40074 divided by 3.14
*April 19, 2016*

**Math**

A bag contains 3 gold marbles, 10 silver marbles, and 21 black marbles. Someone offers to play this game: You randomly select on marble from the bag. If it is gold, you win $3. If it is silver, you win $2. If it is black, you lose $1.
*April 19, 2016*

**Art**

What are the names of Santa's reindeer?
*April 19, 2016*

**Chemistry**

N=No e^-Lt .5=e-L12 ln of both sides... ln (1/2)=-12L L=ln.5/-12=.693/12
*April 19, 2016*

**Math**

Mona takes out a $12,000 student loan to help pay for her first 2 years of college, then 2 years later needs another loan for $14,000 to get her through to graduation. She graduates 4 years and 9 months after acquiring the first loan, and payments are deferred until 6 months ...
*April 19, 2016*

**Chemistry**

-47.93*
*April 19, 2016*

**Chemistry**

6% solution means 6g H2O2 per 100g of water. 1g of water = 1ml, so 6g H202/100mL. Now you have 40mL solution, so, 40mL * (6g/100mL) = 2.4g of H2O2, moles of H2O2 = 2.4/34.0147 = 0.0705 moles H2O2. ΔH = ΔrH/moles H2O2. ΔH = -3.382kJ/0.0705mole = 47.93 kJ/mol
*April 19, 2016*

**Chemistry**

this pre lab sucks
*April 19, 2016*

**english**

What is a persuasive writing
*April 19, 2016*

**statistic**

There are 20 students in a class. Six of them have blue eyes and nine have brown eyes. You were asked to choose 2 students without replacement. What is the probability of choosing an student with blue eyes followed by a student with brown eyes?
*April 19, 2016*

**US history**

What long term cause led to South Carolina seceding from the United States? A. The Growth of the anti-slavery movement B. Debate over the expansion of slavery into the territories C. Increased sectional tensions due to new laws D. The breakdown of the I thought the answer is B...
*April 19, 2016*

**US history**

Ulysses S. Grant was not considered a popular president, even though he had been a popular war hero. Which statement describes why? A. He refused to work with Radical Republicans in Congress. B. His ability to lead was marred by scandal. C. He took a strong stand against ...
*April 19, 2016*

**math**

Let the number of miles Donald has been cycling be x. The number of days of the adventure is 3x. Ashwin has been cycling 9 miles a day, so Ashwin has covered 3x * 9 miles = 27x. The total distance is 247 miles Add the distance that Ashwin and Donald have been cycling for x+27x...
*April 19, 2016*

**math**

Let the first digit be x and the second be y. The number is xy(note that they're not multiplied together) xy+yx = 99 let y=2x Trial and error from here 36+63=99 :)
*April 19, 2016*

**math**

Let f = age of father and(f-24) = age of son After two years their sum of ages will be 40. So, (f+2) + (f-24) + 2 = 40 2f - 20 = 40 2f = 40 + 20 2f = 60 father(f) = 30 yrs
*April 19, 2016*

**science**

I think you need to use the resistivity formula R=rho(l/A) R is resistance, rho is resistivity, l is length and A is diameter Since you are given length and diameter, you know l and can find A which is the cross-sectional area of the wire. For resistivity, you can search up ...
*April 19, 2016*

**math**

The time it takes me to wash the dishes is uniformly distributed between 11 minutes and 20 minutes. What is the probability that washing dishes tonight will take me between 15 and 16 minutes? Give your answer accurate to two decimal places.
*April 19, 2016*

**Meteorology**

Warmer temperatures. In warmer temperatures, the average speed of the water molecules is faster, hence more molecules will be able to escape from the surface of the water into the air
*April 19, 2016*

**Chemistry - Oxidation-Reduction reactions**

4 KMnO4(aq) + 6 H2SO4(aq) = 2 K2SO4(aq) + 4 MnSO4(aq) + 6 H2O(l) + 5O2(g) That would depend on what your limiting reagent is. If it was KMnO4, then the calculation should not change. If it was H2SO4, the calculation will change according to volume etc However, since adding ...
*April 19, 2016*

**Chemistry - Oxidation-Reduction reactions**

how would your calculation of the molarity of KMnO4 be affected if you had added twice as much sulfuric acid and water as was called for in the procedure?
*April 19, 2016*

**Calculus I**

For what values of a and b is the line -4x+y=b tangent to the curve y=ax^3 when x=4? Can anyone give me the hint?
*April 19, 2016*

**Math**

I=Io-(I=/csc^2theta) =Io-Io(sin^2theta) =Io(1-sin^2theta) =Io(cos^2theta) For part b, assuming that it is the same type of light entering the lens, the intensity I entering should be the same. Then you can create two equations and use proportion to solve
*April 19, 2016*

**Calculus I**

if f(x)=24, find f'(11)? How can i find it?
*April 19, 2016*

**Pre-Calc**

Assume that x, y, z and b are positive numbers. Use the properties of logarithms to write the expression logb(4) sqrt((x^7 y^2)/(z^4)) in terms of the logarithms x, y, and z.
*April 18, 2016*

**Math**

The total cost of collars and embellishments Victoria buys has to be less than or equal to her budget. Hence 5C+2E "less than or equal" 1000
*April 18, 2016*

**Algebra**

Let the length of the third side be x The second side will be 10x(10 times) The third side is x-6(6 less) 64=x+10x+x-6
*April 18, 2016*

**algebra**

One side of Bill's mural is 10/(10-2y) times smaller than Ociel's. In total, his mural is (10/(10-2y))^2 times smaller
*April 18, 2016*

**Business**

(Algebra Question) Let the length of each side of the square room be x. Area of floor = x^2 Perimeter = 4x x^2-4x=60 Solve for x
*April 18, 2016*

**Math**

A bill of 4.60 was paid in quarters and nickels. If there were 28 coins in all, how many quarters were there?
*April 18, 2016*

**chem**

what mass of Cl2 is produced from the reaction of 665 g of Hal
*April 18, 2016*

**math**

568
*April 18, 2016*

**computer science**

Which language?
*April 18, 2016*

**math (ms sue)**

Try searching for formulas online with the form (a+b)^n Unfortunately, the website does not allow me to paste website links
*April 18, 2016*

**Math**

x P(x) 0 0.2 1 0.3 2 0.2 3 0.3 Find the mean of this probability distribution. Round your answer to one decimal place.
*April 18, 2016*

**science**

a certain mass of gas occupies 600 cm3 and exerted 1.325*10^5 Nm^-2 pressure. at what temperature would the volume of the gas be halved?
*April 18, 2016*

**Math**

How many hundred thousand in 1,000,000
*April 18, 2016*

**math**

what time is spent on art and math if math is 21% and art is 14%
*April 18, 2016*

**life orientation**

critically discuss 6 ways that the human rights violation influence individuals, groups and broders south african community
*April 18, 2016*

**life orientation**

Define the 2 concept:fraud and corruption and give examples of each
*April 18, 2016*

**English**

why traditional African marriage is an advantage for the men only,not women?
*April 18, 2016*