Tuesday
March 31, 2015

Posts by Megan


Total # Posts: 958

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

math
Is the answer $84?
February 21, 2013

math
Would I divide 300 by 2.50?
February 21, 2013

math
Hello! I am confused on how to do this math problem. Can you please help me or explain how you get this answer please? Miriam orders a shipment of 1, 500 pounds of ice for her supermarket. The ice comes in individual 5-pound bags that cost Miriam orders$2.50 each. Miriam sells...
February 21, 2013

Chemistry
PLease Help me!!!!!!!!!!!
February 18, 2013

Chemistry
Help!!!!!!!!!!!! Fe + CuSO4 --> Cu + FeSO4 2.05g 7.00g 2.46g 151.8g Which reactant was limiting and how does this chemical equation support this? The numbers beneath the names are the masses in grams.
February 18, 2013

math
75%? Who is Jessica?
February 7, 2013

math
Find the % of Discount Regular Price $25,000 Sale Price $22,000
February 7, 2013

Math
Now how would I do this? This is so confusing. LUNCH You bought 3 pieces of chicken that cost x dollars each, a salad for $3, and a drink for $1.
February 5, 2013

Math
4(y-3)+9-3y I come out and get 4y-12+9-3y What do I do now? I'm so confused! I don't know it !:(
February 5, 2013

Math
Hello! I am needing some help on Algebra! It is hard ! Can you explain how to Simplify Algebraic Expressions? The easiest way? I have a test over it Friday, and i can't understand it at all! Can you help with these and explain? -12z+4(z-9)+30+z and 4(y-3)+9-3y
February 5, 2013

chemistry
would the ratio of moles of Cu:moles of CuCl2 differ from atoms of Cu:formula units of CuCl2? Why or Why not?
February 5, 2013

Spanish
1) B 2)C 3)B 4) B
February 4, 2013

Science
Hello Steve. I have another question... why is Meiosis important?
February 4, 2013

math
Thank u. Can you also help me at -19 (v-1)
February 4, 2013

math
It was supposed to be (-32-s)(-9). I copied it wrong, Sorry Steve!
February 4, 2013

math
(-32)-s (-9) I am not good at algebra. I am supposed to use the distributive property, but not sure where to begin.
February 4, 2013

Math
$45 at 2% for 5 years
January 22, 2013

Math
$45 at 2% for 5 years
January 22, 2013

Alegbra
Find the range of the relation [(1, -4), (2,5), (3,5)]. Then determine whether the relation is a function.
January 17, 2013

chemistry
What is the molarity of an HCl solution if 38.5 mL of it is titrated to the equivalence point with 41.6 mL of a 1.41 M NaOH solution?
January 13, 2013

math
how can you use a right angle to decide how to name another angle?
January 8, 2013

geometry
the endpoints of the diameter of circle O are (-2,-1) and (-16,13). what are the coordinates of its center?
January 8, 2013

physical science
When iron metal reacts with oxygen, the reaction can form Fe2O3. Write a balanced chemical equation for this reaction, and find the number of moles of oxygen that are needed to form 6 mol of Fe2O3. Show your work.
January 7, 2013

Chemistry
When 100 mL of Ba(NO3)2 solution at 25 degrees Celsius is mixed with 100 mL solution CaSO4 solution at 25 degrees Celsius in calorimeter, the white solid BaSO4 forms and the temperature of the mixture increases to 28.1 degrees Celsius. Assuming that the calorimeter absorbs ...
December 9, 2012

Chemistry
Explain in step by step and provide calculations to show how you can prepare 1.50 L of 0.10 M H2SO4 solution starting with 16 M H2SO4
December 9, 2012

Physics
An object weighing 400.0g in air is immersed in water after being tied to a string connected to a balance. The scale now reads 364.6g. a.) Find the loss of weight(in gram of weight) when completely submersed in water. b.) Find the volume of the object in cm^3 and in m^3. c.) ...
December 5, 2012

Physics- Elena please help!
A 60.00 cm guitar string under a tension of 46.000 N has a mass per unit length of 0.11000 g/ cm. (a) What is the speed of the wave? (b) What is the fundamental wavelength for this string? (c) What is the fundamental frequency for this string? (d)What is the highest resonant ...
December 3, 2012

Physics- Someone Please Help!!!
A 60.00 cm guitar string under a tension of 46.000 N has a mass per unit length of 0.11000 g/ cm. (a) What is the speed of the wave? (b) What is the fundamental wavelength for this string? (c) What is the fundamental frequency for this string? (d)What is the highest resonant ...
December 3, 2012

Physics- PLEASE HELP
A 60.00 cm guitar string under a tension of 46.000 N has a mass per unit length of 0.11000 g/ cm. (a) What is the speed of the wave? (b) What is the fundamental wavelength for this string? (c) What is the fundamental frequency for this string? (d)What is the highest resonant ...
December 3, 2012

Physics- PLEASE HELP
A 60.00 cm guitar string under a tension of 46.000 N has a mass per unit length of 0.11000 g/ cm. (a) What is the speed of the wave? (b) What is the fundamental wavelength for this string? (c) What is the fundamental frequency for this string? (d)What is the highest resonant ...
December 2, 2012

Intermediate Algebra
what is 2x to the second power equals 54
December 1, 2012

math
Thanks!
November 5, 2012

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