Saturday

July 30, 2016
Total # Posts: 57

**math**

perry mixed 4 2/3 ounces of red paint and 3 1/3 ounces of yellow paint to make the right shade of orange paint. He needs 40 ounces of orange paint to paint the rest of the desk. How many ounces of red and yellow paint should Perry use to make enough orange paint to cover the ...
*April 6, 2016*

**chemistry**

suppose as student returned some unused lead nitrate to the container marked sodium nitrate. what could the student do to get all the lead ions out from the sodium nitrate?
*April 2, 2016*

**Math of Investment **

How long will it take for money to double itself at {0.55, m=2}
*January 6, 2016*

**IQ question**

31215
*December 2, 2015*

**Math / Statistics**

{ In a recent basketball game, a player who makes 65% of his free throws made eight consecutive free throws. Assuming that free-throw shots are independent, determine whether this feat was unusual. } I'm just a little lost on how to determine if it's unusual or not. I ...
*October 9, 2015*

**Calculus 2**

Thank you so much. I was stuck on the right hand side with the 8sin2θ. Not sure what to do with the 8 and 2. This has cleared it up very well.
*May 17, 2015*

**Calculus 2**

How would you find the following. A step by step process would greatly be appreciated. 1) Convert the polar equation to a rectangular equation. r^2 = 8sin2θ
*May 17, 2015*

**Math**

A gardener grows roses, tulips, and sunflowers in an 18-acre public garden. This year, she wants to plant twice as many acres of sunflowers as acres of tulips. She also wants wants to plant 6 more acres of roses than of sunflowers. How many acres of each flower should the ...
*November 5, 2014*

**Physics**

A 4.500 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is μs = 0.455 and the coefficient of kinetic friction is μk = 0.155. At time t = 0, a force F = 12.4 N is applied horizontally to the block. State the ...
*October 29, 2014*

**physics**

A car moves with a speed of 30km/hr for half an hr,25km/hr for 1he and 40km/hr for 2hrs. What is the average speed of car?
*July 1, 2014*

**teachers aide**

Resources for educating young children with diverse abilities part-3 Please check my answer?This is my last exam. 1--c 2--b 3--c 4--c 5--a 6--d 7--b(not sure) 8--d 9--b 10-c 11-b 12-a 13-d 14-c 15-d 16-a 17-c 18-d 19-c 20-a
*December 30, 2013*

**teachers aide**

This is my answer of Resources for educating young children Part-3.please some one fix if i wrong. 1--c 11--b 2--b 12--a 3--c 13--d 4--c 14--c 5--a 15--d 6--d 16--a 7--b(not sure) 17--c 8--d 18--d 9--b 19--c 10--c 20--a
*December 30, 2013*

**Organic Chemistry**

I'll try to answer those questions. But I need someone to check for me. 1) anthracene<resorcinol< 4-amino-1-naphthalenesulfonic acid< benzoic acid< sodium salt 2) water soluble: sodium salt, benzoic acid Toulene soluble: antharcene, 4- amino-1-...
*September 10, 2013*

**Physics**

Someone Help her!!! :)
*June 26, 2013*

**finance**

Suppose Delta Company issued bonds with a 15-year maturity, a Rs. 1,000 par value, a 12 percent coupon rate, and semiannual interest payments. If actual price of the bond in the market is Rs 900, compute yield to maturity, current yield and capital gain yield.
*June 23, 2013*

**physics**

A 62.0 skier is moving at 6.10 on a frictionless, horizontal snow-covered plateau when she encounters a rough patch 3.30 long. The coefficient of kinetic friction between this patch and her skis is 0.330. After crossing the rough patch and returning to friction-free snow, she ...
*March 28, 2013*

**Chem**

Calculate the mass percent composition of C,H, O and in aspirin. Express your answers using two significant figures. Enter your answers numerically separated by commas.
*February 22, 2013*

**Chem**

Calculate the mass percent composition of C,H, O and in aspirin. Express your answers using two significant figures. Enter your answers numerically separated by commas.
*February 22, 2013*

**Chemistry**

A helium balloon contains 0.54g of helium. Given the molecular weight of helium is 4.0 g/mol, how many moles of helium does it contain?
*February 22, 2013*

**chem**

If you pour equal amounts of scalding hot water into different metallic cups of equal temperature, which cup will heat up the most? Rank the cups from hottest to coldest. Rank from warmest to coolest final temperature. 500-g cast iron cup 500-g gold cup 750-g cast iron cup
*February 1, 2013*

**chem**

Rank the following species according to the decreasing energy needed to raise the temperature of 10.0g of the substance by 25.0 degrees celsius Rank from most to least energy needed. Rank these in order of the question. copper aluminum cast iron silver water
*February 1, 2013*

**chem**

Calculate the amount of heat required to heat a 3.3kg gold bar from 24 degrees celsius to 61 degrees celsius. Specific heat capacity of gold is 0.128 J/g degrees Celsius! Express your answer using two significant figures.
*February 1, 2013*

**math**

thank you. it is grade 7 special math school
*January 30, 2013*

**math**

fill the sequence 8, 23, 44,74, 116 next two terms of sequence
*January 30, 2013*

**Chemistry105**

A 10.00 mL volume of sulfuric acid required 23.65 mL of NaOH solution for complete neutralization. What is the molarity of the acid solution?
*December 18, 2012*

**Chemistry105**

Can you please plug in the numbers this is so confusing.
*December 4, 2012*

**Chemistry105**

1. (a) What is the molarity of a solution prepared by dissolving 4.315 g of NaOH in water to exactly 100 mL in a graduated flask? (Na = 23.0; O = 16.0' H = 1.0 amu). (b) What volume of the above solution is required to ...
*December 4, 2012*

**Chemistry105**

Hci
*December 2, 2012*

**Chemistry105**

When 50.0 Ml of 1.00 m chi was mixed with 50.0 ml of 1.00 m NaOH in a calorimeter the temperature rose from 25.0 c to 32.0 c calculate the heat change for the reaction assuming that the total volume of the solution is 100.0 ml and the specific heat is 1.00 cal/ (g.c). Is the ...
*December 2, 2012*

**Chemistry105**

When 50.0 Ml of 1.00 m chi was mixed with 50.0 ml of 1.00 m NaOH in a calorimeter the temperature rose from 25.0 c to 32.0 c calculate the heat change for the reaction assuming that the total volume of the solution is 100.0 ml and the specific heat is 1.00 cal/ (g.c). Is the ...
*December 2, 2012*

**statistik**

Below are random sample of 4 observations. 25,75,32,56 Based on the given information, determine whether or not the population from which this sample was taken is significantly different from 48 at 95 percent confidence level. (Assume the population is normally distributed).
*December 2, 2012*

**statistik**

can you show me the caculation :) Last year, 50% of MNM, Inc. employees were female. It is believed that there has been a reduction in the percentage of females in the company. This year, in a random sample of 400 employees, 180 were female. a.Give the null and the alternative...
*December 2, 2012*

**statistik**

can you show me the calculation ;) The life expectancy of computer terminals is normally distributed with a mean of 4 years and standard deviation for 10 months. a. What is the probability that a randomly selected terminal will last more than 5 years? b. What percentage of ...
*December 2, 2012*

**statistik**

the average starting salary of this yaer's graduates of a large university (LU)is $25000 with a standard deviation of $5000.futhermore,it is known that the starting salaries are normally distributed. a)what is the probability that a randomly selected LU graduate will have ...
*November 28, 2012*

**statistik**

twenty percent of the employees of a large company are female.use the normal approximation of the binomial probabilities to answer the following question. what is the probability that in a random sample of 80 employeses a)exactly 16 will be female? b)14 or more will be female...
*November 28, 2012*

**Chemistry105**

What is the molarity of a solution made by diluting exactely 10.00 mL of a 0.1235 M solution of KNO3 to exactely 250 mL in a graduated flask?
*November 25, 2012*

**Chemistry 105**

What is the weight/ weight% of a solution made by dissolving 12.0g of NaC1 in 100.0 g of water?
*November 25, 2012*

**Math ( composite functions )**

I need some help with composite functions where i have to find the f(g(x)) and g(f(x)) on most of them I just couldn't figure out how to multiply.... 1) f(x) = ³√x-5 , g(x) = x^3 + 1 So I started on this one and i got confused with the cubed f(g(x))=³&#...
*October 2, 2012*

**Humanities, social studies**

Can someone please give me links or answer these questions: What Culture did the Burgundians have? if so, what did they do (culturally) How did the Burgundians Are they a democracy, monarchy, etc.? How did they make money (politically and economically) I can't find a brief...
*September 4, 2012*

**physics**

The half life of a radioactive sample is 6.93 days.after how many days will only one -tenth of the sample be left behind?
*August 1, 2012*

**physical science**

determine the amount of gravity of two bobies whose mass is 10 grams each and are 10 cm apart?
*June 14, 2012*

**physical**

the missile in problem 16 took 2 minutes to reach the height it attained. how much power was used?
*June 14, 2012*

**chemistry**

a gas has a volume of 20 liters measured at 27 degree celcius and 4 atmospheres .What will be its volume at standard temperature pressure?
*February 15, 2012*

**Please help me!!! BIOLOGY**

1. Explain how natural selection and sexual selection can work together to cause the evolution of large antlers on male moose. 2. Suggest two ways a synthetic biologist can change the course of evolution.
*December 28, 2011*

**College Physics**

A ball is thrown upward at a speed v0 at an angle of 53° above the horizontal. It reaches a maximum height of 8.2 m. How high would this ball go if it were thrown straight upward at speed v0?
*September 30, 2011*

**science physics**

a small aircraft experiences s lift force equal to 3.8 times of its weight. a)draw a diagram to show the forces acting on the aircraft when it is flying in a horizontal circle with its wing banked at an angle to the horizontal b)determine the maximum bank angle that the ...
*August 16, 2011*

**movement and music**

the best time of day for toddlers to participate in a movement session is a morning, b noon, c afternoon d evening
*May 20, 2011*

**Chemistry**

What is the pH for the potassium propionate solution at the equivalence point?
*May 3, 2011*

**calculus**

How many critical points does the function: (x+2)^5 * (x-3)^4 have? How would I solve this quickly? The answer says something about an effect of multiplicity of the zeros of the function?
*April 22, 2011*

**federal tax**

Compute Marie's taxable income for 2008, assuming she is single and claims two dependent children. Her adjusted gross income is $70,000 and she has itemized deductions of $9,000.
*January 9, 2011*

**math**

i don't know
*December 7, 2010*

**physics**

Instead of subtracting the (25-343) add it and you should get the correct answer. :)
*April 21, 2010*

**computer science /use java language**

write the program that inputs a string representing a binary number(0s and 1s). First, your program should veerify that it is indeed a binary number, that is, the number contains only 0s and 1s . if that is not the case, your program should print a message that number is not a...
*October 30, 2008*

**6th grade math**

What is 2 x (4 to the power of 2) - 12 + 5 ?
*September 16, 2008*

**biology**

how will you find out about the animals that live in the pond?
*August 31, 2008*

**chem**

How do these things shift the direction of a chemical reaction?: -adding/removing reactants -adding/removing products -adding/removing energy This is how I think I understand it: -adding more reactants pushes it to the right -removing reactants pushes it to the left -adding ...
*March 17, 2007*

**chemistry**

How do these things shift the direction of a chemical reaction?: -adding/removing reactants -adding/removing products -adding/removing energy Thanks! It depends upon the equation and whether the reaction is exothermic or endothermic. Post the entire problem and tell us what ...
*March 15, 2007*

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