Thursday
March 30, 2017

Posts by Benjamin

Total # Posts: 79

Maths
the second term of a GP is 36 more than the first term. The difference between the 4th and the 3rd terms is 900. Calculate the common ratio and the first term of the GP
January 25, 2017

Chemistry
In this reaction: 2 HCl + Na2CO3 -> H2O + CO2 + 2 NaCl The HCl was diluted from 2M to 0.8M and I currently have 0.020 L of it. There is also Na2CO3. What would be four causes for a large error percentage? Is it possible that some of the HCl evaporated?
January 19, 2017

Chemistry
For the reaction of 2 HCl + Na2CO3 -> H2O + CO2 + 2 NaCl, how can I visually identify the limiting reagent, without any calculations? If I have a very high percent yield, what would be a good reason for it, considering that the HCl was diluted to 0.050 L at 0.8 M ...
January 18, 2017

precalculus
How do you find the major and minor axis of an ellipse?
December 5, 2016

precalculus
can you explain what the equation y = a(x - h)2 + k, a ? 0 means and what it represents?
December 5, 2016

Algebra
Your test scores in one class are 8484 and 88. What possible scores can you earn on your next test to have a test average between 86 and 90​, ​inclusive
September 16, 2016

biology
assignment
August 7, 2016

Math
If q^1/2 = x, x^-1/4 = 4^-1/2, what is the value of q? Plz help me!
July 19, 2016

maths
The area of a rectangle is 60 cm squared and its perimeter is 38cm. Find the length and width of a lectangle
May 27, 2016

Physics
A uniform rod 2m long has a force 80N applied downward at one end. Another force 6N applied downward at the other end. At what point under the rod should the pivot be placed to keep it in equillibrim?
May 5, 2016

engineering
important of ict in electrical studies
April 28, 2016

Math algebra
If a mixture calls for 3 cups of flour to 2 cups of water. Then how much water is needed for only 2 cups flour??
April 2, 2016

English
As a young girl growing up in Africa, the narrator came into contact with many native Africans. Those who found themselves in the employ of her family were the fortunate ones, she believed. While she acknowledged that they exist, the narrator took for granted the servant-like ...
March 9, 2016

out of 7 men and 5 women, 5 members of a committee are selected. in how many ways can this be done if (a) there must be exactly 3 men (b) there must be more women than men?
February 28, 2016

Statistics
90% of population is unemployed. Assume 10 employable people are to be selected randomly. what is the expected number of those unemployed.
December 16, 2015

Physics
Plz, i need the workings. An object is acted upon by two forces of 5N and 12N. Calculate the resultant of two forces if the forces acting perpendicular to each other
October 3, 2015

Physics
Coefficient of kinetic friction =F/R=ma/mg Which is a/g since the mass is equal 0.64=a/10 a=6.4m/s NB. g=10m/s Recall v=u+at V=15+6.4×2 V-15=12.8 V=12.8+15 V=27.8m/s
October 2, 2015

physics(lens)
Two converging lenses, A and B,with focal length F1=20cm and F2=25cm,are placed 80cm apart. An object is placed F0cm in front of the first lens. 1)Determine the position of the final image formed by the magnification of the two lenses. 2)Determine the magnification of the ...
August 26, 2015

physics(measurement)
Thank you.
August 26, 2015

physics(measurement)
What accurate method can be used to determine the thickness of a coin. Explain pls..
August 26, 2015

physics(lens)
Two converging lenses, A and B,with focal length F1=20cm and F2=25cm,are placed 80cm apart. An object is placed F0cm in front of the first lens. 1)Determine the position of the final image formed by the magnification of the two lenses. 2)Determine the magnification of the ...
August 26, 2015

physics(kinematics)
A police officer in a patrol car parked in a 70 Km/h speed zone observes a passing automobile might be intoxicated,the officer starts his car,accelerates uniformly to 90 Km/h in 8s ,and maintaining a constant velocity of 90 Km/h,overtakes the motorist 42s after the automobile ...
July 31, 2015

physics(capacitors)
A sheet of paper 40mm wide and (1.5 x 10^-2) thick is placed between a metal foil of the same width is used to make a 2.0 UF capacitor. If the dielctric constant(relative permitivity of the paper is 2.5 ,what length of paper is required?
July 25, 2015

physics
a cell of emf 10v and internal resistance 2ohms is connected in series with an ammeter resistance 0.5ohms and a load of resistance 7ohms. Calculate (A) the potential difference across its terminal (B)the voltage drop
May 21, 2015

Calculus
t is greater than 0.5, not 2
March 14, 2015

physics
Coefficient of friction=F/R=ma/mg=a/g Coefficient of friction of rubber on dry concrete=0.6>>0.85 So to make it accurate coefficient=0.75 0.75=a/10 a=7.5m/s^2 Recall that.. v^2=u^2+2as v^2=0^2+2×7.5×30 v^2=450 v=√450 v=21.2m/s (b)coefficient of ...
February 22, 2015

math
A tomato plant has grown 5 inches over the last 9 days at this rate how many inches will it grow over the next 15 days
December 27, 2014

Math
A fence is to be built to enclose a rectangular area of 310 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side costs 14 dollars per foot. Find the dimensions of the enclosure that is most ...
December 11, 2014

science
suppose 125g of ethanol at 25C is mixed with 255g of ethanol at 84C at constant atmospheric pressure in a thermally insulated vessel. What is the Ssys for the process. The specific heat capacity for ethanol is 2.42 J/g K. Answer in units of J/K
October 11, 2014

science
A point charge of 0.5C is brought from infinity to a point A in free space.how much work is required to this?
October 10, 2014

science
two parallel plates are separated by a dielectric of thickness 2mm and a dielectric of constant 6.if the area of each plate is 40cm2 and p.d between them is 1.5kv,find the capacitance,the energy stored by the capacitor and the ratio of the capacitance if the dielectric is ...
October 10, 2014

CHEM, HELP!!
1. If the energy of a photon is 1.32 × 10^-18 J, what is its wavelength in nm? 2. The energy of an electron in the hydrogen atom is determined by what?
October 5, 2014

Accounting
12,069
July 14, 2013

Community technical college
Given that 1st term of an A.P is 7 and it's 10th term is twice the second term,calculate the (a) 19th term (b)sum of 28 terms (c) difference between 9th and 6th terms
February 3, 2013

math
if i ride my bike for 5.22 km and my whell turns 1.45 m how many times will it rotat
November 22, 2012

Calculus
Find a cubic function f(x) = ax^3 + bx^2 + cx + d that has a local maximum value of 3 at x = −2 and a local minimum value of 0 at x = 1.
November 12, 2012

geometry
i have to proof that segment ad is congruent to segment ce. my givens are that segment ab is congruent to cb, that fd bisects ab and that fe bisects cb. the shape is a triangle
September 26, 2012

collage math
what is the difference of two cubes
July 15, 2012

university of phoenix
if someone scored two standard deviations above the mean on a standard test where the mean =100 and the standard deviation = 15, what is the person's numerical score?
July 13, 2012

physics
3.3m/s
April 20, 2012

Algebra
What do I do if a compound inequality contradicts itself? Do I put down empty set, or what?
March 22, 2012

64÷2=32-8=24-8=16
March 8, 2012

Medical Coding 2
Answer I came up for Ilsa and Anonymous is 943.29 (multiple, because it's both arms) E924.8 (where: other-burning by: hot object NOS) E849.0 (where) E015.2 (activity) E000.8 (who) 99251 (inpatient - hospital-based clinic) 16030 (large dressing change)
February 8, 2012

Just multiply 8 and 5 you will get 40 when you add two zeros you get 4000.Check your answer on paper, If you wish to
November 29, 2011

medical Coding
my take on it is: 972.9, E950.4, E000.8, E849.7, 99281, 96365, 96366x2, J1610x20, J7070
November 22, 2011

math
Find the angles of atriangle which are in the ratio 2:3:5. Could someone explain how to do this also. Thanks.
November 22, 2011

ISB
Find the angles of atriangle which are in the ratio 2:3:5. Could someone explain how to do this also. Thnaks.
November 22, 2011

math
In a right angle triangle, two acute angles are in the ratio 2:3. Find the angles?
November 22, 2011

English
Thank you, your responses helped my very much.
November 9, 2011

English
I was wondering what you all may think about video games and their effects on children playing them? Are the children becoming more violent? What do these games do t a child's psyche?
November 9, 2011

physics
hysics - Joy, Friday, June 14, 2013 at 6:14pm 1.a2.b3.c4.a5.c6.c7.c8.a9.a10.c11.c12.d13.b14:a15.d16.c17.b18.c19:d20:b.
October 12, 2011

Physics
An airplane, traveling 90 degrees, at 100 meters per second is blown towards 180 degrees at 50 meters per second. What is the resultant velocity and direction?
September 8, 2011

Math
Find the difference of all the prime numbers between10 and25 arranged in descending and ascending order.Give your answer in words.
August 9, 2011

math
Find the GCD OF 121, 151 And 211
August 9, 2011

Math (difficult)
The value of a new car purchased for \$28,000 decreases 8% per year. Write an exponential decay model for the value of the car. Use the model to estimate the value after 5 years.
April 30, 2011

Chemistry
I don't knw it. Buh pls m interested In d solution
March 21, 2011

algebra II
Using the given equations, find the point of intersection. 6x - 2y = 5 and 3x - y = 10
March 16, 2011

college HIST
The Age of Jackson is often seen as a turning point in American politics, one where we turn from a politics where few could vote or hold office to one where many could. Define Jacksonian Democracy and show how it changed the political system from what came before. Do the major...
March 7, 2011

I think it means that the american people like doing things in a very simple manner and don't like to make such a big deal over anything to avoid confusion or problems. They rather be straight forward with one another than lying and tricking people in order to get what ...
March 7, 2011

geometry
to the nearest integer how long is the diagonal square with the side of 12
February 13, 2011

A mixture contains solids: Aluminium,camphor and sugar.Explain how you would obtain a sample of solid sugar from the mixture.
November 30, 2010

Algebra
There is a table of values for the function f. They read: x=3, f(x)=4 x=4 f(x)=5 x=5 f(x)=6 x=6 f(x)=3 x=7 f(x)=5 x=8 f(x)=7 What is the value of 2f(5)-f(4)? I did this wrong obviously, but what I did was figure out the function of five from the table (4), and multiplied that ...
November 25, 2010

Satistics
In North American, female adult heights are approximately normal with a mean of 65 inches and a standard deviation of 3.5 inches. a.) If one female is selected at Random, what is the probablility that shes has a height 70 inches or higher? b.) The heights of 50 females were ...
November 14, 2010

physics
For the velocity remember that the work done on the ice by the spring is calculated as the change in Kinetic Energy of the block or: Work = (1/2)mass*velocity(final)^2 - (1/2)mass*velocity(initial)^2 Plug in your Work answer from part a and substitute into the above equation. ...
October 7, 2010

algebra with pizazz pg 40 riddle
I need help with problem E: 2v + 18 = 16 - 4(v + 7)
September 26, 2010

That is not 4th grade homework
April 19, 2010

Managerial Economics
January 23, 2010

physics
Vector A has a magnitude of 8.00 units and makes an angle of 45.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods, find (a) the vector sum A + B and (b) the vector difference A –...
August 28, 2009

algebra
Militsa has 4 times as many nickels as dimes. Their total value is \$8.10. How many of each coin does she have
May 17, 2009

Math
What is the maximum height reached by the ball? If a baseball is projected upward from ground level with an initial velocity of 64 feet per second, then its height is a function of time, given by s= -16t^2 + 64t
April 2, 2009

Music
What is the Mongolian equivalent to the guitar called? I've searched under Mongolian instrument lists, but I couldn't find it. Thanks!
March 26, 2009

History
and that i don't have a textbook, nor any notes,
January 21, 2009

History
I know, i just wanted to find out a little more about the french revolution, and im clueless, that's all
January 21, 2009

History
uhhh.... Im clueless...
January 21, 2009

History
About the French Revolution. You are a member of the Third Estate. Prepare a speech for the meeting of the Estates General, explaining all your problems. Minimum 300 words
January 21, 2009

Misc./Project/Art
I like the poster idea, but the problem is that I don't have access to any of those resources. I'm away from home so I don't have access to pictures or poster boards.
October 5, 2008

Misc./Project/Art
Hello, I need to come up with a very creative way to express who I am to a certain group of people. Unfortunately, I'm not very good at art, so I would have to come up with a new way. Are there any ideas you might have? Thank you very much for your help.
October 5, 2008

Math, Geometry and Physics
less than 270m or more than 3480m.
January 16, 2007

1. Pages:
2. 1

Post a New Question