Thursday
October 23, 2014

Posts by John


Total # Posts: 6,303

Math
Can you please explain step by step on how to do each of these two problems below? And then tell me whether it involves an arithmetic sequence or a geometric sequence I also need to show the work on both problems thank you. Perform the indicated operations 1010 two × 101...
August 7, 2011

Math
Can you please explain step by step on how to do each of these two problems below? And then tell me whether it involves an arithmetic sequence or a geometric sequence I also need the work shown out on both problems thank you. Perform the indicated operations and reduce the ...
August 7, 2011

math.
If x>0 and x=5y, then square root of x^2-2xy+y^2 is..
August 2, 2011

statistics
Would it be unusual for the mean of a sample of 3 to be 115 or more?
August 2, 2011

verbs
What's your question..
August 2, 2011

math
if f(x)= 5x+7 and g(x)=x^2-2 write the functions a. (fxg)(x) b. f(g(x))
August 1, 2011

calculus
For any divergence especially with trig definitions in infinite series you will want to make sure that you can prove it to something. Comparison test or limit comparison works really well just remember that the sine function is only good from -1 to 1
August 1, 2011

history
What problems had to be overcome Africa's interior could be opened up to Westeren explorers? what helped to over come these problems?
July 30, 2011

chem
if the saturation of carbon is 12 and nitrogen is 6 what is the tempature of 200ml in 450 g containers in parts per million
July 29, 2011

calculus
How do I solve 3xy^3dy/dx=y^2x^2+5x^3y+y^4
July 28, 2011

maths
how do I solve 3xy^3dy/dx=y^2x^2+5x^3y+y^4
July 28, 2011

Physics
Assume this: The Earth rotates exactly around N and S poles, Earth is perfect sphere, and do not count the Earth's orbit around the sun. HINT: Ө = d/r, where Ө is in radians...and circumference = 2πr
July 26, 2011

Algebra
The percent decrease from 5 to 4 is how much less than the percent increase from 4 to 5? A. 0% B. 5% C. 15% D. 20% E. 25%
July 26, 2011

Pre-Calc
Vector v is (4√3,√3). Find the angle between v and i.
July 25, 2011

Math
No, again 168 is the total. So if you take 168-117(Which is the odds for winning) you get 51. So your odds against winning are 51/168
July 22, 2011

Math
17 out of 214. 79%. 17:214 is read like a fraction again. So if you divide 17/214 you get 79%. Not sure what exact answer you're looking for. But hopefully this can get you started.
July 22, 2011

Math
Again write it as a fraction... The total is 1 because you are looking at the chances of seeing 1 moose. Therefore to find the probability of not seeing a moose you need to take 1-.37 which is .63 so your probability of not seeing a moose is: .63/1
July 22, 2011

Math
You write it as a fraction. (How many students preferred supreme)/(Total college sophomores) 7/23 and that is already reduced.
July 22, 2011

introduction to computers
Which of the following search terms would direct terms would direct search engine to find pages about the windows vista operating system? 1"windows vista"2windows vista 3"windows""vista"4 "windows" vista
July 19, 2011

criminal similation
what is criminal similation
July 18, 2011

math
Given the funtion G(t) = t2 - 7t + 5, evaluate G(-1+h)-G(-1)/h
July 16, 2011

Math: Parabola, Vertex
Find the vertex of the parabola associated with the quadratic function. f(x)= -1/7x^2 - 2/11x + 1/121 (h,k)= What is the vertex of this quadratic function?
July 13, 2011

statistics
A bus company official wanted to estimate the mean time for the trip between two cities. A random sample of such trips gave a mean of 152 minutes and a standard deviation of 12 minutes. Construct a 98% confidence interval for the population mean time.
July 9, 2011

Tamucc
A 51kg object connected to a spring of 31N/m spring constant oscillates on a horizontal, frictionless surface with amplitude of 5cm. Find the speed of the object when when its position is 3cm.
July 7, 2011

physics
the acceleration is not right. you need to use this equation: Xf=Xi+Vi*t+(1/2)a*t^2 Xi=0,Vi=0,t=1.4,Xf=1,a=? 1=0+0(1.4)+(1/2)a(1.4^2) 1(2)= a(1.96) 2/1.96= a 1.0204 = a Then you follow the rest of the equation T = m(g+a)
July 3, 2011

physics
A block of mass 35 kg moves on the horizontal surface. If initially at rest whwat is the speed of the block after moving a distance of 6m when G=32?
July 3, 2011

Physics
2
July 3, 2011

Trigonometric Substitution
Trigonometric Substitution a. Explain why the substitution x = asin(Theta) guarantees that cos(Theta) is greater than or equal to 0 . b. What sort of restriction must we put on x and a so that the substitution x = asec(Theta)will guarantee that tan(Theta) is greater than or ...
June 28, 2011

algebra
Describe in your own words how to solve a linear equation using the equality properties. Demonstrate the process with an example. Next, replace the equal sign in your example with an inequality by using the less than or greater than sign. Then solve the inequality.
June 27, 2011

Spainish
What is the correct answer to the question: ¿Qué haces los sábados?
June 23, 2011

geometry
Solve the following equation for x 3x + 23 = 7
June 22, 2011

calculus ( related rates )
a paper cup in the shape of a cone has a diameter of 10cm across the top, and is 8cm deep. if the cup is leaking out the bottom at 2pi cm^3/min, at what rate is thet area of the water surface ( only the top surface of the water) changing, when the cup has a the water depth of...
June 22, 2011

Physical Science 2
Given that iron has a density of 7.87 g/cm3, calculate the volumeof 100 g of iron and 50 g of iron
June 21, 2011

Chemistry
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.500. If a trial's absorbance is measured to be 0.310 and its initial concentration of SCN– was 0.0010 M, the equilibrium ...
June 20, 2011

CIS 115
There are three seating categories at a stadium. For a softball game, Class A # seats cost $15, Class B cost $12. and Class C seats cost $9. Design a modular # program that asks how many tickets for each class of seats were sold, and then # displays the amount of income ...
June 20, 2011

English
Can you identify key qualities of drama and poetry which emphasize their performative qualities.
June 16, 2011

Physics
Two 0.33 kg blocks are attached to a 1.62m long string such that the lengths of the three string segments are equal. The ends of the string are attached to the ceiling at points separated by 1m. Each segment is 0.54m long. What is the tension in the horizontal segment. Answer ...
June 16, 2011

financial management
The HighT Company is a manufacturer of electronic products. The company is preparing a financial plan for the coming year and has the following independent projects under consideration: Project Initial investment ($ millions) Internal rate of return (%) A 220 20 B 380 11 C 300...
June 16, 2011

English
Can you help me summarize the major similarities and differences between the forms of the drama " Riders to The Sea",The poem " We Real Cool",and the short story "The Secret Life of Walter Mitty" and help me with at least one textual example of ...
June 15, 2011

English
How is the more direct performative aspect of drama and/or poetry reflected in these forms? structure, language, technique, and style
June 15, 2011

science
Is an icing propane regulator concidered an endothermic reaction?
June 15, 2011

algebra
find the equation of the perpendicular line to y=1/2x+4 and passing through the point (1,-2) PLEASE HELP :)
June 12, 2011

Physics
A concave mirror is constructed so that a man at a distance of 26 from the mirror sees his image magnified 1.5 times. What is the radius of curvature of the mirror?
June 12, 2011

Physics
In the photoelectric effect, what happens to the stopping voltage when the light frequency is decreased?
June 11, 2011

Chemestry
Also please i'd really appreciate if someone could explain me also how to do it.. like from step 1 to end ~ Thanks.. @@..
June 10, 2011

Chemestry
The solubility product of copper(II) iodate, Cu(IO3)2, is 4 x 10-9 mol3 dm-9 at 25 °C. What is the solubility of copper(II) iodate in g dm-3? A 1.85 × 10-2 B 4.14 × 10-1 C 5.21 × 10-1 D 6.56 × 10
June 10, 2011

physics (simple question...need help pls!)
I Know, I did read it...But i am not provided with an answer choice of both. I am wondering, must the electron be moving in a straight line?
June 7, 2011

physics (simple question...need help pls!)
The magnetic field is generated by: A) an electron moving at constant speed in a straight line B) a proton moving in a circle C)a neutron moving in a circle D) none
June 7, 2011

Physics
Use Kirchhoff's junction theorem to explain why the total equivalent resistance of a circuit is reduced, not increased, by connecting a second resistor in parallel to another resistor.
June 5, 2011

Physics
By our sign conventions, if a battery is traversed in the actual direction of the current in it, what can you say about the sign of the change in electric potential (the battery’s terminal voltage)?
June 5, 2011

Physics
A platinum wire is connected to a battery.If the temperature increases, will the current in the wire increase, remain the same, or decrease?
June 5, 2011

Physics
To move 8.0 of charge from one electrode to the other, a 12- battery must do how much work?
June 4, 2011

propability
In basketball, Nicole makes 4 baskets for every 10 shots. If she takes 3 shots, what is the probability that exactly 2 of them will be baskets?
June 1, 2011

Political Science
Can anyone help me connect how the movie Robocop connects to Fascism?
June 1, 2011

Geometry
The surface area of acone with height 15 cm is 500π square cm. Find the radius of the cone. Round your answer to two decimal places.
June 1, 2011

Socials Studies (URGENT)
What does it mean by "influenced international relations"
June 1, 2011

Socials Studies (URGENT)
1. Why did Canada go to war in Korea and why was this war significant for Canada and the UN? Went to Korea to aid the south against the north from communism. (Don't know why it was significant. Any help?) 2. Describe two instances which Canada influenced international ...
June 1, 2011

GMAT Algebra (NO CALC)
Thank you, my mistake on mixing up the answers when typing. I get number two now. But on number one, how do you get to =√(64*5+64*4) and then do you combine 64s for =√(64*(5+4)) thank you so much
May 31, 2011

GMAT Algebra (NO CALC)
It's been a few years since I've done algebra, and many more since we've been expected to do it without a calculator like the GMAT rules state. Please help me figure out these two problems without the use of a calculator. 1. __________________ √(16)(20) + (8...
May 31, 2011

science
so it would most definitely have to be 5. microorganisms. final answer! lol
May 30, 2011

science
if removed from the life cycle, which of the following would have the greatest impact on the productivity of lawns. 1. robins 2. moles 3. toadstools 4. dandelions 5. microrganisms i think 4 b/c of the seedd that are easily blown away in the wind to regerminate
May 30, 2011

Math 100p
78 students 10 of them are freshmen what fraction of the class are freshman
May 28, 2011

maths
the price of meat increase from 110 to159 what percentage increase
May 28, 2011

trig
sec(90degrees -theta)
May 27, 2011

Science
A researcher is gathering data from four geographical areas designated: South=1;North=2; East=3; West=4. The geographical regions represents a. categorical data b. quantitative data c. directional data d. either quantitative or categorical data
May 27, 2011

business
180 Flip - a 180 degree boardslide varial kickflip 360 Flip – A 360 degree boardslide varial kickflip 50-50 – both trucks grinding on an object 5-0 – only the back truck grinding on an object Backside – turns or rotations in the direction your toes point ...
May 27, 2011

chemistry
A furnace that provides heat by burning methane gas must have the correct mixture of air and fuel to operate efficiently. What is the mole ratio of air to methane gas in the combustion of methane? Hint: Air is 20% oxygen.
May 27, 2011

chemistry
If the gas could took a hemispherical shape, what circular surface area would the gas cover? chemistry
May 26, 2011

Chemistry
phosgene an equilibrium reaction is the formation of phosgene an equilibrium reaction? how can you tell
May 25, 2011

Pre-algebra
Yes
May 25, 2011

science
IN SOLID LIQUID WHAT DO NOT MATTER
May 21, 2011

math
factor the following trinomail w^18-9w^9y^5+14y^10
May 18, 2011

physics
A particle moves along the x axis. It is initially at the position 0.280 m, moving with velocity 0.080 m/s and acceleration -0.240 m/s2. Suppose it moves with constant acceleration for 3.10 s. (a) Find the position of the particle after this time. (b) Find its velocity at the ...
May 18, 2011

geometry
please help me?
May 17, 2011

geometry
how long are the congruent legs of isosceles triangle if its base and altitude to the base are 12cm and 8 cm respectively?
May 17, 2011

math
thanks
May 17, 2011

math
square root of 80?
May 17, 2011

Calculus
An isosceles triangle has perimeter 64m. Find the dimensions of this triangle that make its area a maximum
May 17, 2011

chem
what is the total mass of rn-222 remaining in an original 160g sample after 19.1 days? 1 2.5g 2 5.0 g 3 10g 4 20g how do you do this ?
May 16, 2011

math
Explain why the equation y=x squared can have two possible values of x for every value of y.
May 16, 2011

math
What would the future value of $6.5million dollars be after 5 years at 1.2% interest?
May 16, 2011

Cost Analysis
Does indirect costs often depend on some or all of the direct costs? How do we make that call.
May 16, 2011

Physics
i . imgur . com/Ki7wM.jpg
May 16, 2011

Physics
That's still not right but hopefully you can understand it. I wish it would just let me post a link to an image.
May 16, 2011

Physics
Figure: ---------______ -----___|------| F-->|-m-|--M---| ----|___|------| --------|______|
May 16, 2011

Physics
The two blocks in the figure, of mass m and M respectively, are not attached, but there is a coefficient of static friction u between them. The surface below the heavier block M is frictionless. What is the minimum force magnitude F required to keep the smaller block m from ...
May 16, 2011

Body Structure and Function
The change in the number of olfactory neurons as we age increase the detection of warning smells
May 15, 2011

physic
A Carnot engine takes an amount of heat QH = 113 J from a high-temperature reservoir at temperature TH = 1170°C, and exhausts the remaining heat into a low-temperature reservoir at TL = 13.3°C. Find the amount of work that is obtained from this process
May 13, 2011

physic
Find the net change in entropy when 259 g of water at 0.0°C is added to 259 g of water at 97.5°C.
May 13, 2011

Astronomy
Which of the following developments was most directly responsible for the creation of rockets that were capable of going to the moon? A. gunpowder B. explosives C. single-stage rockets D. multistage rockets
May 13, 2011

Physics
I've tried a bunch, have no idea. Got the first part, no idea on the second one. A basketball, of mass m = 0.45 kg is dropped, from rest, from a stationary hellicopter at a high altitude. Use g = 9.81 N/kg. (a) If air resistance is negligible, using energy considerations ...
May 12, 2011

CALCULUS HELP PLEASE!!
Intergral from -2 to 2 (-2 is at the bottom of the integral sign and 2 is at the top) x^-2dx = -x^-1] (the bracket has a 2 at the top and -2 at the bottom) = -(2)^-1-(-(-2)^-1) = (-1/2)-(1/2) = -1 Is this true or false. I think it's false, but can someone explain to me why...
May 11, 2011

Calculus
Intergral from -2 to 2 (-2 is at the bottom of the integral sign and 2 is at the top) x^-2dx = -x^-1] (the bracket has a 2 at the top and -2 at the bottom) = -(2)^-1-(-(-2)^-1) = (-1/2)-(1/2 = -1 Is this true or false. I think it's false, but can someone explain to me why ...
May 11, 2011

MATH
How do you factor (x^2)+x+7?
May 10, 2011

keyboarding and word processing
When creating a 20-page newsletter in which you want different margin settings and other page formats within the multipage document, which one of the following Word features should you use?
May 10, 2011

Chemistry
The smaller molecules that make up complex carbohydrates are called A. sugars B. amino acids C. fatty acids D. nucleotides
May 10, 2011

statistics
A consumer group is testing a manufacturer’s claim that a new car model will travel at least 30 miles per gallon of gasoline. Assume that ��0:��=30 and ����:��<30, and that the population standard ...
May 9, 2011

statistics
what the error is: a) Grade Percent Frequency A 20% B 45% C 30% D 10% F 5% (b) The following table summarizes the grade breakdown on an exam in a small statistics class with 10 students. Grade Percent Frequency A 30% B 35% C 15% D 20% F 0%
May 9, 2011

statistics
Washington University banned smoking on the Hilltop campus starting in 2010. The student paper decides to do an opinion poll to see if current campus students/faculty/staff support the ban. Reporters are about to start asking a sample of 250 Hilltop people for their opinions...
May 9, 2011

engineering
How is bacteria used in genetic engineering?
May 8, 2011

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