Tuesday

October 21, 2014

October 21, 2014

Total # Posts: 72,846

**statistics**

According to a survey, only 20% of customers who visited the web site of a major retail store made a purchase. Random samples of size 50 are selected.Tthe mean of all the sample proportions of customers who will make a purchase after visiting the web site is _
*August 25, 2014*

**biology**

anonyms
*August 25, 2014*

**math**

ATM personal identification number PIN codes typically consist of four-digit sequences of numbers. Find the probability that if you forget your PIN, you can guess correct sequence if you recall the two digits
*August 25, 2014*

**math**

A drawer contains 4 red socks and 4 blue socks. Find the least number of socks that must be drawn from the drawer to be assured of having a pair of red socks
*August 25, 2014*

**Math**

A sheet of paper is 8 1/2 in wide and 11 in long. The sheet is printed with a margin 1 1/4 in. wide on all four sides. Find the perimeter of the printed part of the page. I got 34; I subtracted 11 with 1 1/4 and 8 1/2 with 1 1/4. I got 9 3/4 and 7 1/4. I added those and got 17...
*August 24, 2014*

**Math**

A cabinet has shelves that are 12 1/2 in. apart. On one shelf, Katherine stacked a CD player that is 4 5/8 in/ high on top of an amplifier that is 6 3/4 in. high. How much space was left above the CD player? I got 1 1/4; I added 6 3/4 and 4 5/8 and got 11 2/8. Then I ...
*August 24, 2014*

**english**

Which sentence contains a restrictive relative clause?
*August 23, 2014*

**Math**

Thank you
*August 23, 2014*

**Math**

Solve: + n =
*August 23, 2014*

**math**

As of August 22, 2014 the ratio of wins to total games the Red Sox played is? First of all I need to know if I am right about how many games the red sox played. I am pretty sure that they played 161 games. Am I correct?
*August 23, 2014*

**Algebra**

First, you would find the LCD - least common denominator- of 5 and 6, which is basically a number that the both of them can go into. In this case, it is 30. Then you would mulitply 9/5 * 6/6 for 54/30 and 1/6 * 5/5 for 5/30. Now your new expression reads 54/30 - 5/30, which is...
*August 23, 2014*

**thermodynamics**

1. An ideal gas at 40psig and 80 degree F is heated in a closed container to 120 degree F. What is the final pressure, psia?
*August 23, 2014*

**One more equation**

4x/5 = 1.2 Please explain
*August 23, 2014*

**equations**

2.5x/2 = 3.5 -0.4x
*August 23, 2014*

**question**

two friends bob and ralph, ate at a restarunt together. bob paid for himself and ralph paid for himself. Bob spend 3 dollars more than ralph. the total bill was 52.24 dollars how much did bob pay?
*August 22, 2014*

**math mental math**

Shelley spent 17 minutes washing the dishes. she spent 38 minutes cleaning her room. explain how you can use mental math to find how long Shelley spent on the two tasks.
*August 22, 2014*

**physics**

A car of mass 1000 kg accelerates uniformly from rest to a velocity of 54 km/h in 5 seconds calculate 1) its acceleration 2) its gain in k.e 3) average power of the engine during this period . neglect friction
*August 22, 2014*

**physics**

A car of mass 1000 kg accelerates uniformly from rest to a velocity of 54 km/h in 5 seconds calculate 1) its acceleration 2) its gain in k.e 3) average power of the engine during this period . neglect friction
*August 22, 2014*

**CHECK PLEASE**

A AND D NUF SAID
*August 22, 2014*

**geometry**

solution of the questions The sides of a quadrilateral ABCD are 6 cm, 8 cm, 12 cm and 14 cm (taken in order) respectively, and the angle between the first two sides is a right angle. Find its area.
*August 22, 2014*

**Algebra**

Solve for x. (x-1)/(x-3)=sqrt of 17-x
*August 22, 2014*

**Social Studies**

Thanks
*August 22, 2014*

**science & math**

for a ray of light incident normally on one face of the prism prace course of the ray measure the delta angle explain briefly do this for prism with angleA=60,45,90
*August 21, 2014*

**biology**

Explain how both nucleic acids and proteins are polymers.Be sure to describe the monomers that make up the polymers.
*August 21, 2014*

**Physics**

The vector -5.2A⃗ has a magnitude of 40m and points in the positive x direction. Find the x component of the vector A⃗ ? I do not understand how I am supposed to figure this out with just having the magnitude of the vector. Shouldn't there be an angle or ...
*August 21, 2014*

**complex fractions and unit rate**

2 2/5%
*August 21, 2014*

**Math**

Using only one cut, how would you divide 7 pieces of licorice among 5 people so that each person gets the exact same amount of licorice without bending the licorice
*August 21, 2014*

**Math**

Ernie wants to fence in a rectangular play yard for his two dogs. He has 12 pieces of fence that are one unit each. What are the dimensions of the largest play yard that Ernie could make? Show your work
*August 21, 2014*

**Math**

Need help plz?! Graph the ordered pairs (0, 4) and (1, -1) and connect to form a line. Which Quadrant contains no point for this linear function? I honestly need help here
*August 21, 2014*

**chemistry**

Hydrogen and chlorine react to yield hydrogen chloride: H2+ Cl2 ( 2HCl. How many grams of HCl are formed from reaction of 3.56 g of H2 with 8.94 g of Cl2? Which reactant is limiting?
*August 21, 2014*

**science**

If each resistor in a diagram is 95 Ù. What is the total current in the circuit if it is connected to a 120 V power supply?
*August 21, 2014*

**General Physical Science**

A fishtank with inside dimensions of 65 cm X 45 cm X 80 cm is filled with water. What is the volume in cm3 of water required? What is the mass in grams of the water required? What is the mass in kilograms?
*August 21, 2014*

**physical science**

A car travels in a northward direction for a total distance of 512 km. The car completes this trip in 6 hrs. After resting the driver makes the return trip, the return trip only takes 5.5 hours. What is the average speed of the car over the entire trip?
*August 21, 2014*

**science**

The time units used by scientists to divide Earth's history are part of the
*August 21, 2014*

**chemistry**

sulphur+iron filings
*August 21, 2014*

**math**

a dining table in the shape of a rectangle ABCD has sides of length (2X+12)and x cm and the length of the diagonal BD is (2x+18)find the value of x
*August 21, 2014*

**math**

change f(x)=(x-1)^2-4 to general form
*August 21, 2014*

**chemistry**

one of the following scientists never made any contribution to the development of periodic table? (a)j.jthompson (b)John Newlands (c) Luther Meyer ( d) mendeleev
*August 21, 2014*

**blah**

Question 5 Two point charges, each 6*10-5 C, are separated by 30 cm. What is the electrostatic force produced by this arrangement?
*August 21, 2014*

**chemistri**

calculate the molarity of a copper ii nitrate solution with a density of 1.48 g/ml and a percent mass by mass of 5.20 %
*August 20, 2014*

**algebra**

What is the rule to the function with inputs of 0;1;3;4 and outputs of 4;3;1;0
*August 20, 2014*

**Math**

Maggie has a ribbon 27 feet long. What is the length of the ribbon in yards?
*August 20, 2014*

**math **

find x if (x,-2) is a solution to the equation 3x+2y=-7. my answer was x=1 but it was wrong.
*August 20, 2014*

**MATHH#2**

find the solution to system by the substitution method. y=2x+5 y=3x The answer is(5,15). Just don't know how the professor got that answer.
*August 20, 2014*

**MATHH**

find the slope,if any, of the line perpendicular to the line through the points (2,-7) and (3,4). i need to show my work!. i got 11 as my answer but i think its wrong.:(
*August 20, 2014*

**programming**

Draw a flowchart and write pseudocode to represent the logic of a program that allows the user to enter values for a salesperson’s base salary, total sales, and commission rate. The program computes and outputs the salesperson’s pay by adding the base salary to the ...
*August 20, 2014*

**physics**

Two uniform planks, each of mass m = 4.41 kg and length L = 2.11 m, are connected by a hinge at the top and by a chain of negligible mass attached at their centers, as shown in the figure. The assembly will stand upright, in the shape of an A, on a frictionless surface without...
*August 20, 2014*

**MATH HELP!!**

sid wrote 541,309 on his paper. Using numbers and words . Explain how the numner would change if he switched the digits in the hundred thousands and tens places
*August 20, 2014*

**math**

Suppose that the 6-month US Treasury bill rate is equal to 5% and the forward rate on a 6-month Treasury bill 6 months from now is 7.24%. (both in yearly terms). What is the rate of a 1-year bill?
*August 20, 2014*

**math**

A (yearly) cash flow stream is x=(-40,10,10,10,10,10,10). The spot rates are (yearly in percentage) s=(5.0,5.3,5.6,5.8,6.0,6.1). Use the discount factors to determine the (net) present value of the stream.
*August 20, 2014*

**Science **

A piece of magnesium ribbon weight 24g is burn in air an 40g magnesium oxide is formed. What mass of oxygen combined with the magnesium in this reaction
*August 20, 2014*

**physics**

2 seg.
*August 20, 2014*

**biology**

Is this correct? 2 examples of reproduction is a starfish and a rose bush....
*August 19, 2014*

**Quantitative reasoning**

The administration has formed a 26 person planning committee. There are 5 times as many administrators as there are students and five more faculty members than students. How many students are there on the committee?
*August 19, 2014*

**English**

Grammarly is a good site.
*August 19, 2014*

**health**

Smooth muscle contracts
*August 19, 2014*

**Language Arts**

I believe that C is the correct answer. P.S. I read this story not to long ago.
*August 19, 2014*

**math**

Find the mean of these grades:71, 72, 87, 96, 82, 76.
*August 19, 2014*

**math**

Find the mean of these grades:71, 72, 87, 96, 82, 76.
*August 19, 2014*

**math**

A (yearly) cash flow stream is x=(-40,10,10,10,10,10,10). The spot rates are (yearly in percentage) s=(5.0,5.3,5.6,5.8,6.0,6.1). Use the discount factors to determine the (net) present value of the stream. (I got a little confused here. Should I 1. use the running present ...
*August 19, 2014*

**math**

Starting from today, every month you save $500 into a bank account with earns interest at an annual rate of 4%. How much money do you have in the account at the end of 4 years? My working is F=R(((1+i)^n)-1)-i where R=500, i=1/300 and n=48. Ans=$25,979.80 Am I solving it ...
*August 19, 2014*

**Chemistry**

A student measures k for a certain blue due to be 19.4 m^-1 at 560 nm. What is the molarity of the dye in a solution with an absorbance of .118 at this wavelength ?
*August 19, 2014*

**algebra**

evaluate the expressions using the following values (-1^2+11^2)(11^2- -7^2)
*August 19, 2014*

**Math**

Why is life like a shower
*August 19, 2014*

**early childhood**

Introducing organized sports among young children is not recommended because? A. they lack the necessary physical needed B. they should be making up their own rules C. they lack the social interaction skills needed D. this excludes the teacher or caregiver from a role in play
*August 18, 2014*

**ECE**

to what means to recognize how many objects are in a small group without having to count each object ?
*August 18, 2014*

**math**

the distance between DELHI TO Meerut is 75km two trains speed of 100km/h & 80 km/h leave the two station at 8am towards each other at what time will they pass each other
*August 18, 2014*

**The Atmosphere and the Oceans **

Which area in the United States has the highest average number of thunderstorms per year?
*August 18, 2014*

**chemistry**

what is the molar concentration of a solution containing 15,0 g of pottasium chloride in 1,30 dm3 of solution
*August 18, 2014*

**math**

Starting from today, every month you save $500 into a bank account with earns interest at an annual rate of 4%. How much money do you have in the account at the end of 4 years?
*August 18, 2014*

**statistics**

The number of hours that college students sleep on a week night is approximated by a normal curve with a mean of 7 hours and a standard deviation of 1.7 hours. Answer the question below using a z table: On a week night, what percentage of students sleep between 5 and 10 hours
*August 18, 2014*

**geometry**

angles versus length & height
*August 18, 2014*

**Please Help ! Analytic Geometry**

Duck u
*August 18, 2014*

**Math**

a person sol 100 shares of stock at a profit of 15%. if the selling price for the 100 shares was 2300. what was paid for the stock?
*August 17, 2014*

**Math**

A person stock worth 2300 at 100 shares and they had a 15 % profit how much was the stock
*August 17, 2014*

**cda**

A criticism of the information -process approach is that it
*August 17, 2014*

**math**

The leng of the smaller rectangle is 1 inch less than twice its wide. both the dimensions of the larger rectangle are 2 inches longer than the smaller rectangle. the area of the shaded region is 86 square inches. what is the area of the smaller rectangle?
*August 17, 2014*

**Math**

This is not my answer but Ms. Sue you do need to provide me the Answer
*August 17, 2014*

**Math**

I also don't know but u just assume that Fluffaluff is a bamboo tree
*August 17, 2014*

**Math**

Assign variables for the following problem (you do not need to solve the problem) Thirty fluffaluff trees are introduced on an island at the start of year zero. At the start of thirty there are 55 fluffaluff trees. Use the fluffaluff formula to find how many fluffaluff trees ...
*August 17, 2014*

**math**

The length of a rectangle of perimeter 64 cm is 5/3 of its breadth . Find the area of rectangle ?
*August 17, 2014*

**physics **

Plot a speed-time graph of a car A traveling at a uniform speed of 80km/hr on the same graph plot the speed-time graph of 2nd car B starting from rest and uniformly accelarating through a maximum speed of 80km/hr a) what relations do you find between the distance covered by ...
*August 17, 2014*

**chemistry**

calculate the concentration of ammonium nitrate solution.
*August 17, 2014*

**statistics**

In performing a hypothesis test, the null hypothesis is population mean = 6.9 and the alternative hypothesis is population mean ≠ 6.9, a random sample of 16 items is selected. The sample mean is 7.1 and the sample standard deviation is 2.0. The population is ...
*August 17, 2014*

**chemistry**

if the wavelength of the first line in the balmer series in a hydrogen spectrum is 6863A .calculate the wavelength of the line in the lyman series in the same spectrum
*August 17, 2014*

**chemistry**

an endothermic reaction a to b has an activation energy of 15 kcal per mol and heat of reaction 5 kcal per mol the activation energy for the reaction b to a will be ?
*August 17, 2014*

**math**

Place parentheses in the following equation to make it true. 6 + 6 ÷ 6 x 6 - 6 = 0
*August 16, 2014*

**english**

Will I get a 100 if I use these answers
*August 15, 2014*

**log 101**

An 80% learning curve has been observed for the production of the MEERKAT system. If the 5th production unit''s recurring cost is $1 million, what will be the recurring cost for the 10th production unit? Assume that the production line is continuous and that the ...
*August 15, 2014*

**Practice **

A sentence using as many long vowel sound words as possible
*August 14, 2014*

**math**

Shawnee is putting $3,500 into an account earning 4.85% interest compounded quarterly. She estimates that it will take just over 11 years for this investment to grow to $6,000. Which of the following is a true statement?
*August 14, 2014*

**Science**

photosynthesis= carbon dioxide + water + light energy → glucose + oxygen + water (the arrow means that things before it react to yield the products after) Oxygen is one of the products.
*August 14, 2014*

**Economics**

. When concert tickets are priced below equilibrium, who gets them? Is this distribution of tickets fairer than a pure market distribution? Is it more efficient? Who gains or loses if all the tickets are resold (scalped) at the market-clearing price?
*August 14, 2014*

**Economics**

please give me a answer
*August 13, 2014*

**Algebra 2**

x-3/2x*6x^2/5
*August 13, 2014*

**Math**

What is the scale factor as a percent that will result if the rule is applied to a point (x,y) on a coordinate grid? 1. (1.5x,1.5y) is it, 150% 15% 1.5% or none of these? 2. (0.7x,0.7y)is it 700% 7% 0.7% or none of these?
*August 13, 2014*

**Biology: Genetics**

18.Which of these is trueof meiosis? A. n → 2n B. n → n C. 2n → n D. 2n → 2n Is it C.?
*August 13, 2014*

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