Friday

July 3, 2015

July 3, 2015

Total # Posts: 990

**Physics - projectile**

5 seconds
*November 19, 2013*

**physics**

because of deformation, what can kinetic energy be converted into?
*November 18, 2013*

**social studies**

upon what did the success of southeast Asian empires frequently depend ?
*November 18, 2013*

**Please finish this:)**

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
*November 17, 2013*

**Math:)**

I'm sorry, the equation that I forgot to put was 100w+10,000=220w+7,000. That's the one @Reiny I forgot to mention. Now how do you do PART 2? Thanks!
*November 17, 2013*

**Math:)**

Can anyone help?
*November 17, 2013*

**Math:)**

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS). Thank you!:)
*November 17, 2013*

**Algebra**

In the logarithmic expression . . . log(base 4) 8 , how does the base 4 become base 2? Here is how it is suppose to be worked out: log(base2)8 / log(base2)4 => log(base2)2^3 / log(base2)2^2 => 3/2
*November 16, 2013*

**Algebra**

How do you find a new salary if you know the amount of a cut/raise and the salary before the cut/raise?
*November 16, 2013*

**Algebra**

Okay, thank you!
*November 15, 2013*

**Algebra**

Can logarithms have negative answers?
*November 15, 2013*

**Math**

the ratio of males to females in a college class is 2:6. If there are 72 students in the class, how many are male?
*November 11, 2013*

**math**

San fran won 21 games and lost 26. what is their ratio of games won to games played?
*November 11, 2013*

**Science**

3. A. Sequence the same gene in both species to compare similarity. 4. C. Vestigal I just did the test myself :P hope this helps to anybody out there!!!
*November 10, 2013*

**Science**

3. A. Sequence the same gene in both species to compare similarity. 4. C. Vestigal
*November 10, 2013*

**Science**

I'm doing this lesson right now and I don't know it either, but I will type down the answer even if your done with it lol. But for other people who need help I guess :P
*November 10, 2013*

**history**

how did George washington successfully lead a new nation? how did john adams successfully lead a new nation? thank you!
*November 6, 2013*

**science help plzzz**

1. A 2. C 3. C 4. C 5. D
*October 29, 2013*

**history**

thank you!!!
*October 29, 2013*

**history**

how were slaves treated in the american south?
*October 29, 2013*

**sicence**

Which example describes a method of relative dating? A. examining historical records to determine when a volcano erupted B. using radioactive isotopes to calculate the age of a rock C. measuring the depth of tree bark D. using fossils to determine the oldest rock layer in a ...
*October 23, 2013*

**Can someone check these answer for me?**

1. A. 2. D 3. B 4. C 5. B
*October 17, 2013*

**Physics**

VERTICAL SPRING A spring of negligible mass, spring constant k = 89 N/m, and natural length l = 1.4 m is hanging vertically. This is shown in the left figure below where the spring is neither stretched nor compressed. In the central figure, a block of mass M = 2 kg is attached...
*October 16, 2013*

**Physics**

Two identical cars (m = 1350 kg) are traveling at the same speed of 28.1 m/s. They are moving in the directions shown in the drawing. What is the magnitude of the total momentum of the two cars?
*October 1, 2013*

**physics**

170dB
*September 18, 2013*

**elementary functions**

f(x)=x(squared)+x-3. compute the difference quotient: (f(x+h)-f(x))/h
*September 17, 2013*

**Physics**

How long does it take T-Rex to reach its food 200m away assuming that he starts from rest and accelerates at 4.00 m/s2?
*September 16, 2013*

**physics**

Sheena can row a boat at 3.13 mi/h in still water. She needs to cross a river that is 1.10 mi wide with a current flowing at 1.75 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head 60.0° upstream. (a) What is her speed with ...
*September 8, 2013*

**math**

factor (m/4 + n/3)(3m/4 - 2n/3) Is this the answer? if not, what did I do wrong? 3m^2/16 + mn/12 - 2n^2/9
*July 5, 2013*

**math**

solve for c: 3/4(2c+3)+3/5(8c-2)=9c
*July 5, 2013*

**math**

a ship leaves a port at 6 am traveling due east at 12mph. another ship leaves a port 11 am traveling due north at 15 mph. how far apart are they at 11pm to the nearest tenth mile?
*July 5, 2013*

**math**

When I went kite flying the other day, I let out an entire roll of string (400 feet). If when the string pulled tight formed a 40 degree angle with the ground, about how high was the kite?
*July 5, 2013*

**math**

Two metal alloys, containing 26% copper and 54% copper are to be mixed together to get 210 oz that is 30% copper. How much of each should be used?
*July 5, 2013*

**Stats**

Two dice are tossed. What is the probability that the sum of both dice is a prime number? this is the answer i have ; Presuming two fair, 6-sided dice, each numbered 1 through 6: You can achieve one of the following results on any given roll: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12...
*July 1, 2013*

**Economics**

What do you think are the pluses (advantages) and minuses (disadvantages) when firms have market power? Be sure to explain your answer from a consumer and a firm’s point of view. why did ESPRIT closed all stores in the U.S. Include a few of these word Diseconomies of ...
*June 27, 2013*

**Economics**

What do you think are the pluses (advantages) and minuses (disadvantages) when firms have market power? Be sure to explain your answer from a consumer and a firm’s point of view. why did ESPRIT closed all stores in the U.S. Include a few of these word Diseconomies of ...
*June 27, 2013*

**Chemistry**

What is the normality of a solution which contains 4.03-g of sodium carbonate in 300.-mL of solution?
*May 22, 2013*

**government**

which provides evidence that political parties are not as strong as they once were? A. the increasing number of independents B. the lack of straight-ticket voting C. increased spending on campaigns D. increased numbers of registered Democrats
*May 14, 2013*

**Governmnet**

which of the mass media has the most impact on american politics? A. television B. the internet
*May 14, 2013*

**Math**

There are 6 members in a club and only 4 computers.Club meets for 60 minutes. Each member wants equal computer time. How much time should each student have?
*May 12, 2013*

**math**

Fred arrives at the subway station every day at a random time and takes the first train that arrives. If he takes the A train, which arrives each hour on the hour, he ends up at the fitness center. If he takes the B train, which arrives every hour 15 minutes after the A train...
*May 6, 2013*

**math**

A small grill can hold two hamburgers at a time. If it takes 5 minutes to cook one side of a hamburger, what is the shortest time needed to cook both sides of five hamburgers? 30 15 20 25
*May 6, 2013*

**Math help please**

I agree with Ms. Sue. Negative number play seems to be the problem with the incorrect problems.
*May 5, 2013*

**Chemistry**

How do you find the equilibrium constant of: B + O2 <-> BO2 ??
*May 5, 2013*

**Calculus**

A rectangle in the first quadrant has one vertex as the origin, and other vertex on the curve y= -x^2 -2x +4. If the rectangle has one side lying on the x-axis, find the largest possible area of the rectangle.
*May 5, 2013*

**Calculus**

A rectangle in the first quadrant has one vertex as the origin, and other vertex on the curve y= -x^2 -2x +4. If the rectangle has one side lying on the x-axis, find the largest possible area of the rectangle.
*May 5, 2013*

**Statistics 7**

A doctor wants to estimate the HDL cholesterol of all 20 to 29 year old females. How many subjects are needed to estimate the HDL cholesterol within 2 points with 99% confidence assuming s-17.8 based on earlier studies. Suppose the doctor would be content with 90 % confidence...
*May 5, 2013*

**7 STATS MATHGURU PLEASE HELP**

A doctor wants to estimate the HDL cholesterol of all 20-29 year old females. How many subjects are needed to estimate the HDL cholesterol within 2 points with 99%confidence assuming s=17.8 based on earlier studies? Suppose the doctor would be content with 90% confidence. How ...
*May 5, 2013*

**Stats help**

A poll conducted in 1972 asked 1003 people, " During the past year, about how many books did you read either all or part of the way through?" Results of the survey indicated that x-bar=18.9 books and s=1 9.9 books. A)Construct a 95% confidence interval for the mean ...
*May 5, 2013*

**Stats help**

MathGuru, how do i determine the z-score for this one?
*May 5, 2013*

**Stats help**

A poll conducted in 1972 asked 1003 people, " During the past year, about how many books did you read either all or part of the way through?" Results of the survey indicated that x-bar=18.9 books and s=1 9.9 books. A)Construct a 95% confidence interval for the mean ...
*May 5, 2013*

**STATSHELP**

Got it thanks!
*May 5, 2013*

**STATSHELP**

Thanks!!!!!!!!!
*May 5, 2013*

**STATSHELP**

A poll was conducted that asked 1015 people how many books they had read in the past year. Results indicated that x-bar= 12.3 books and s=16.6 books. Construct a 95% confidence interval for the mean number of books people read. ____, _____ PLEASE HELP ME!!!!!!!!!!!!
*May 5, 2013*

**STATISTICS**

THANK YOU!
*May 5, 2013*

**STATISTICS**

Determine the point estimate of the population mean and margin of error for the confidence interval. Lower bound is 15, upper bound is 27. A)The point estimate of the population mean is ________. B) The margin for error for the confidence interval is _______. HELP
*May 5, 2013*

**Statistics**

THANK YOU
*May 5, 2013*

**Statistics**

A researcher wishes to estimate the proportion of adults who have high-spped internet access. What size sample should be obtained if she wishes the estimate to be within .02 with 90% if A) She uses a previous estimate of 0.48? B) She does not use any prior estimates? Please ...
*May 5, 2013*

**6th grade math**

Square root is just a fancy word for a number multiplied by its self. So you can also look at a very large multiplication table and look at 5 x 5 and 25 x 25 and so on.
*May 2, 2013*

**stats**

From previous records, a shipping company knows that the cost to deliver a small package within 24 hours is $15.50. The company charges $17.95 for shipping, but guarantees to refund the full charge if the delivery is not made within 24 hours. If the company fails to deliver ...
*April 29, 2013*

**Stats**

Recall that in the week 2 assignment, a certain company hired three new managers from a pool of seven men and five women. All three hires were women, and the men complained of gender bias. Compute the theoretical probability that a fair selection process (in which each person ...
*April 29, 2013*

**science**

Meiosis is reproductive process that produces four haploid sex cells from one diploid cell and ensures offspring will have the same number of chromosomes as the parent organisms.
*April 18, 2013*

**science**

Asexual reproduction is a type of reproduction----fission, budding, and regeneration---in which a new organism is produced from one organism and has DNA identical to the parent organism. Sexual reproduction is a type of reproduction in which two sex cells, usually an egg and a...
*April 18, 2013*

**Math**

Thanks
*April 18, 2013*

**Math**

I know that I am saying this is how I am going to explain it. There is an answer choice it has: choice a)n/18 = 252 Choice b) 252/n = 18 Choice c) 18=n/252 Choice d) 252= 18/n Which is correct?
*April 18, 2013*

**Math**

Because I don't know how to post answer choices in FRACTION form???????
*April 18, 2013*

**Math**

All of my answer choices are in fraction form....
*April 18, 2013*

**Math**

Pam gave 252 water balloons to the people who came to a summer party. Each person received 18 balloons. Which equation can be used to find n, the number of people who came to the party?
*April 18, 2013*

**Precalculus **

Jessica deposited $785 into an account that pays 6.2% interest compounded continuously. How long will it take until Jessica has $1000?
*April 8, 2013*

**Statistics**

IQ score are normally distributed with a mean of 95 and a standard deviation of 17. If the sample size is n=36 find the mean and standard distribution of sample mean
*April 7, 2013*

**Science**

How do the oceans support life? How have the oceans and their marine life changed through time?
*April 5, 2013*

**Chemistry**

Okay so I'm having a brainfart here. I'm doing a titration problem and have got to the point of: 3.6x10^9 = (.01218-x)/(x)(.00316+x) I don't know how to proceed from there and use the quadratic formula as silly as it sounds. Any help would be appreciated!
*April 4, 2013*

**Math**

So then the equals 3.3 ???? thats not an answer choice
*April 4, 2013*

**Math **

One week, Mrs. Peterson went to her health club on Monday, Wednesday, and Friday. Each day she went to the club, she jogged on the treadmill for 3/5 hour, lifted weights for 1/4 hour, and then cooled down by stretching for 1/4 hour. On Saturday, she rode her bike for 3/4 hour...
*April 4, 2013*

**Algebra 1**

4. What is the value of the 11th term in the sequence? -1 , 5 , 11 , 17 , 23 , ...
*April 4, 2013*

**physics**

Calculate the mass needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of 14.0 , and its CG is 34.0 from the hip joint; the sling is 81.5 from the hip joint.
*March 22, 2013*

**Accounting 1**

Red Bank Enterprises was involved in the following transactions during the fiscal year ending October 31: 8/2: Borrowed $75,000 from the Bank of Kingsville by signing a 120-day note. 8/20: Issued a $40,000 note to Harris Motors for the purchase of a $40,000 delivery truck. The...
*March 20, 2013*

**Help!!!**

Help!!!
*March 18, 2013*

**chemistry**

Help??
*March 18, 2013*

**chemistry**

It was a very cold day -10 C. Victor went outside to pick up the morning newspaper. He quickly noticed the icicle that formed on the nearby flagpole. Curiosity got the best of him, and he decided to lick the ice on the flagpole. Instantly, Victor's tongue is attached to ...
*March 18, 2013*

**Math**

The total resistance of two circuits in parallel is 18 ohms and one circuit has five times the resistance of the other, find the resistance of each circuit. Use 1/R=1/R1+1/R2. R1 and R2 are two individual resistances. a)Find the smaller resistance b)Find the larger resistance
*March 12, 2013*

**Math**

The total resistance of two circuits in parallel is 15 ohms and one circuit has five times the resistance of the other, find the resistance of each circuit. Use 1/R=1/R1+1/R2. R1 and R2 are two individual resistances. a)Find the smaller resistance b)Find the larger resistance
*March 12, 2013*

**math**

a person can copy the final exam in 28 minutes using a new copy machine. using an old copy machine, it takes 70 minutes. if both machines are used, how long will it take to complete the job
*March 12, 2013*

**Math**

someone can mow his lawn in 48 minutes. if his daughter helps, they can do it in 40 minutes, how long would it take for his daughter to mow the lawn by herself?
*March 11, 2013*

**physics **

The speed of all electromagnetic waves in empty space is 3.00 × 108 m/s. What is the wavelength of visible light emitted at 7.2 × 108 MHz? Answer in units of m
*March 5, 2013*

**Science **

How do mutations lead to cancer?
*February 28, 2013*

**Science **

How do mutations lead to cancer?
*February 28, 2013*

**Math**

so 6km/hr is the answer??
*February 27, 2013*

**Science**

Thanks so you add 3+4+2.5=9.5 for distance. 25+40+30=95 9.5km/95min=0.1km/min=6 km/hr. so 6km/hr is the answer to everything or this whole problem?
*February 27, 2013*

**Science**

Help!!!!!!
*February 27, 2013*

**Science**

George walks 3 km on Monday and 4 km of Tuesday and 2.5 km on Thursday. On Monday, he walks 25 mins., Tuesday 40 mins., and Thursday 30 mins. What is his average speed? d= t= help please
*February 27, 2013*

**chemistry**

A catalytic converter combines 2.55 g CO with excess O2. What mass of CO2 forms?
*February 27, 2013*

**math**

I am sorry you are just confusing me by all these numbers!!!!!!!!!!!!
*February 21, 2013*

**math**

So 975$ is the answer to the whole math problem?
*February 21, 2013*

**math**

Okay.
*February 21, 2013*

**math**

Okay thanks I kind of understsnd it now
*February 21, 2013*

**math**

Thanks Jessica? But I dont know
*February 21, 2013*

**math**

Then the answer is the$750?
*February 21, 2013*