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September 14, 2014

Posts by Jojo


Total # Posts: 193

college chemistry
Manometers can use liquids other than mercury to measure small pressure differences. On a day when the barometric pressure is 761.7 torr, a water manometer, connected between the atmosphere and a glass bulb containing a sample of helium gas has a height difference of 26.1 cm, ...
October 16, 2010

math
a quarter after four in the afternoon in digital form
September 29, 2010

social studies
at its point how wide is west podiatry from east to west
September 22, 2010

chemistry
Use the concepts of effective nuclear charge, shielding, and n value of the valence orbital to explain the trend in atomic radius as you move across a period in the periodic table.
September 19, 2010

math
jenna wants to purchase a pad of drawing paper for $5.00, a charcoal pencil for $0.75, and an eraser for $1.25. how much money doses she need altogether to buy the supplies
September 13, 2010

math
6.the difference of 8 and 5 is? 7.the expanded from of 654 is 600+50+____
September 13, 2010

elementary math
How many different ways can a committee of 9 be selected from a larger organization of 20 people?
August 7, 2010

elementary math
A student has a penny, nickel, dime, and quarter distributed two coins apiece to his front two pants pockets. What is the probability that the front right pocket has more than 30¢ in it?
August 7, 2010

math
Q-2: In a subdivision, 67% of the homes have detached garages, 32% have a patio, and 13% have both. What is the probability that a house has a patio if you know that it has a detached garage?
July 28, 2010

algebra
sqrt root of x+2=3 need help
May 30, 2010

Physics
two converging lenses placed L1=20 cm apart. the focal lengths are f1=10 cm and f2=20cm 1) where is the final image located for an object that L2=30cm infront of the first lens? 2)what is the total magnification of the lens system? *diagram* {Object}|--l2--|{lens1 = f1}|--L1...
April 27, 2010

health
Medical and clinical staffs, such as physicians and nurses, have roles and responsibilities different from those of hospital administrators. · Describe at least two roles of medical or clinical staff, and two roles of hospital administration that are important. ·...
March 21, 2010

4gr math
forty-five is how much less than fifty-four
March 18, 2010

4gr math
no its odd
March 18, 2010

4gr math
0.40+0.15 is even so is that the really answer
March 18, 2010

4gr math
is the value of 3 nickels and 4 dimes an even number of cents or an odd number of cents
March 18, 2010

4gr math
round 64 to the nearest ten. round 87 to the nearest ten. then add the rounded numners.
March 18, 2010

4gr math
how do you draw a perpendicular lines
March 18, 2010

4gr math
use the digits 4,8 and 7 once each to make an even number greater than 800
March 18, 2010

math
one kilometer is how many meters
March 16, 2010

math
Nine dimes are what fraction if a dillor.... write the value of nine dimes using a dollor sign and a decimal point
March 16, 2010

4gr math
how many degrees cooler is a temperature of 34.f to a temperature of 47.f
March 8, 2010

4gr math
an adult cheetah weighs about 130 pounds. an adult mountain lion weighs about 170 pounda. a student estimates that a mountain lion weighs about twice as much as a cheetah. is the estimate reasonable? explain why or why not
March 8, 2010

4gr math
what does one yard equal
March 7, 2010

4gr math
13
March 7, 2010

4gr math
if the diameter of a circle is one foot, then the radius of the circle is how many inches?
March 7, 2010

4gr math
...,450,470,480,__, __, __,... what are the nextthree numbers in this counting sequence?
March 7, 2010

4gr math
on the morning of an important game,gail woke up at the time shown on the clock. she wanted to up 2 hours 35 minutes later. what time did gail want to wake up
March 3, 2010

4gr math
write 7026 in expanded form. then use words to the number
March 2, 2010

math
i dont inderstand what u mean by when you say find the area of the individual square - find the area of the room - divide the area of the room by the area of the individual square to find how many floor tiles are needed
March 2, 2010

math
leah wants to put square floor tiles that measure one foot on each side in a room that is 9 feet and 9 feet wide. How many floor tiles will leah need? is your answer reasonable? explain why
March 2, 2010

math
use digits to write four hundred seventy-five thousand three hundred forty-two. then circle the digit in the ten-thousands place
March 2, 2010

thermochemistry college
Yes! ...She has a big butt!
December 8, 2009

Fundamentals of Electricity
The electric field at one face of a parallelepiped is uniform over the entire face and is directed out of the face. At the opposite face, the electric field is also uniform over the entire face and is directed into that face (see Fig. 3). The two faces in question are inclined...
November 30, 2009

Fundamentals of Electricity
The box-like Gaussian surface of Fig. 1 encloses a net charge of +24.0ε0 C and lies in an electric field given by N/C, with x and z in meters and b a constant. The bottom face is in the xz plane; the top face is in the horizontal plane passing through y2 = 1.00 m. For x1...
November 30, 2009

English
In "Shall I Compare Thee to a Summer's Day", what is an example of personification?
November 29, 2009

chemistry
By kissing your ass
November 23, 2009

7th grade Math
did't work with me either
October 30, 2009

7th grade Math
x x x x x x x x x x x x
October 30, 2009

math
Please help me solve this problem... thanks! 1.Find the equation of the line that cntains the pont (5, -1) and has slope -1/2 2.find the equation of the line that passes through the points (-2,1) and (1,-5)
October 26, 2009

MATH
I Am Doing Equations. y=2.5x-15=220 Please Help Me Solve This Question. :}
October 14, 2009

9th grade, Biology
the jellyfish would swell swell swell and then boooom burst..... because the jellyfish would be placed in hypotonic environment....
September 23, 2009

physics
An object starts falling under gravity from rest. If it completes 9/25 of its journey within the last second. Find the total time taken and the total displacement?
September 12, 2009

math- continuance of problem
Find the largest angle for which sine and tangent agree to within two significant figures.
August 28, 2009

advanced math
a dog food bowl , a water dish and a bed for olivias dog cost before tax is 5, 10, 5 and 12 dollers. if these purchases have a 5 % sales tax added how much did she spend with tax encluded?
August 28, 2009

advanced math
what is 4% of 150?
August 28, 2009

math
I think that is how the question is suppose to be interpreted Reiny. Very confusing wording.
August 28, 2009

math
If you had to put the answer in radians what would it be?
August 28, 2009

math
Find the largest angle for which sine and tangent agree to within two significant figures. Please explain ^_^
August 28, 2009

math b
the vertices of triangle ABC are A(-2,3), B(0,-3), and C(4,1). prove, by means of coordinate geometry, that the median to side BC is also the altitude to side BC.
May 25, 2009

social studies
what is causing nuclear proliferation? what is being done to prevent it?
May 24, 2009

MATH
2/13 for the red marbles and 3/13 for the rest of the marbles
April 21, 2009

spanish
plz help
March 28, 2009

spanish
how do you say: This mourning i was wonken up by the sounds of the birds calling my name. I stood up with a smile to get on with my day.... in spanish
March 28, 2009

Russian Literature
I have to write out a thesis and outline about how Russians view American medical technology/advancements/procedures/doctors. I have no idea how to start this and how to prove my topic. Here is the magic thesis statement: By looking at ________, we can see ________, which most...
March 22, 2009

algebra
-2+3b
March 19, 2009

English
the first one makes the most sense
March 19, 2009

science-biology
name two processes for which DNA is responsible for what are the three components to a DNA nucleotide
March 19, 2009

spelling
will+not=won't
March 19, 2009

math b
solve each system of equations algebraically: x^2+y^2=18 x+y=4
March 5, 2009

math b
yes
March 5, 2009

math b
solve each system of equation algebraically: x2+y2=18 x+y=4
March 5, 2009

spanish
how do you say: "i like my rabbit and guinea pig"
February 22, 2009

english
how do you do a gerund phrase as the subject?
December 9, 2008

6th grade
if i have 152 dollars with a discount of 20 percent whant would the total be?
November 16, 2008

research writing
Finding, Evaluating, and Utilizing Credible Information; Appropriate Style Guidelines; the Center for Writing Excellence; and the completed Appendix D Complete an annotated bibliography of the sources you plan to use in your research paper. Answer the following question: What ...
September 30, 2008

Math
How would you work this problem? Thanks! Josie paid $72.00 for a baseball glove. Price reflected 10% discount off regular price. What was regular price?
September 9, 2008

math
Find the rate: 392feet/8second
September 4, 2008

chem 111
What is the molarity of a solution of 10.0% by mass cadmium sulfate, CdSO4 (molar mass = 208.46 g/mol) by mass? The density of the solution is 1.10 g/mL.
August 26, 2008

Algebra
x^2+4x-24/x-3
August 1, 2008

Maths
hello Can someone please help me with solving simultanaous equations using graphs My problem is that i don't know how to plot them on the actal graph and nor I know how to plot the gradient withing this paticular situation I need help with some steps please MY IGCSE's ...
May 3, 2008

chemistry
1. what do the spectral lines represent in the bohr atomic model? 2. What do the black spaces represent in the Bohr atomic model?
March 18, 2008

History
How exactly did the invention of the cotton gin affect the constitution? I know it increased the cotton production and slaves but i don't see how ti did anything for the constitution.
September 17, 2007

anthropology
what does it mean when my teacher says write an essay that explores how issues surrounding diversity and culture inform your understanding of cultural anthropology....i totally dont understand the question ...like what could be an example?
September 12, 2007

college algebra
D.
August 27, 2007

factoring
I cannot figure these out.Can someone Factor completely: 3x2 - x - 4 I suppose this is actually 3x^2 -x-4 If so: (3x-4)(x+1) Now I'd like you to look at the following website: http://tutorial.math.lamar.edu/AllBrowsers/1314/Factoring.asp
May 23, 2007

factoring
Factor completely: 2x2 – 50 To indicate x squared, use this notation — x^2. 2x^2-50 = 2(x^2-25) You should be able to continue the factoring with the site that Lance has given you. I hope this helps. Thanks for asking.
May 23, 2007

Can someone please help
Can someone show me how to find the sum of this equation and put it in it's simpliest form? (x^2)/(x^2-25)+(7x+10)/(x^2-25) They have a common denominator: x^2-25 which can factor to (x+5)(x-5) The numerator will add to x^2+7x +10 which can factor to (x+5)(x+2) Notice the ...
May 23, 2007

math
The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in cm) from the central starting position, and t is...
April 30, 2007

math
Which three options are true about motion in a straight line. A. A particle which moves at an increasing velocity has a constant acceleration. B. If two particles always have the same velocity as each other, their separation does not change. C. A particle which has zero ...
April 30, 2007

math
The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in cm) from the central starting position, and t is...
April 30, 2007

math
Which three options are true about the quadratic equation?? y= 4t^2 + 16t + 18 A. The graph has a minimum. B. The graph of y crosses the horizontal axis at t = 10 and t = 20. C. The equation 4t^2 + 16 + 18 = 6 has one real solution. D. The function has a maximum at t = 10 E. ...
April 30, 2007

math
Which three options are true about the quadratic equation?? y= 4t^2 + 16t + 18 A. The graph has a minimum. B. The graph of y crosses the horizontal axis at t = 10 and t = 20. C. The equation 4t^2 + 16 + 18 = 6 has one real solution. D. The function has a maximum at t = 10 E. ...
April 28, 2007

english
In the sentence Rosie sang in the play about the Statue of Liberty. What would be the prepostional phrases. I need this before tomorrow and 8 o'clock tonight. Thank you for using the Jiskha Homework Help Forum. When in doubt as to a part of speech, any dictionary will tell...
April 12, 2007

chemistry
If there are 80 milligrams of a radioactive element decays to 10 milligrams in 30 minutes then what is the elements half life in minutes? Ok i narrowed it down to either 10 or 30...but im rly confused so if u could help it wuld be grea 80 40 1 min 20 2 min 10 3min looks like ...
March 4, 2007

Chemistry
For my homework the question is... What is the half life of polonium 214 if a 1 gram sample decays to 31.25mg after 820 seconds? Im not sure how you arrive at the answer, my friend says the answer is 5 but were not sure how to do it..thanks for any help u may have ln(No/N)= kt...
March 4, 2007

Science
A force of 100 newtons was necessary to lift a rock. A total of 150 joules of work was done. how far was the rock lifted? Work=force*distance. solve for distance in meters. plesa help me on my homework come on do it plesa plesa plesa is my last time
March 3, 2007

Intro Accounting - HELP
3. Dr. Colin Modella, an music history professor at the University of Arizona, supplements her income by selling cappuccino on campus to students and other faculty members when she is not teaching, doing research, creating curriculum, or attending committee meetings. She sells...
February 21, 2007

Social Studies
What is nunavuts nickname!!!
February 8, 2007

English
hi for my english project i have to draw a map of the war my character was in..My book was the things they carried so it was the vietnam war, i was wondering if you had any pictures of were the vietnam war was fought. The directions also say i need countries, cities and ...
January 28, 2007

pre-algebra
The perimeter of a triangle is 195 mm.If the lengths of the sides are consecutive odd integers,find the length of each side. what steps do i need to do in order to get the answre? Perimeter= L + L+2 + L+4 solve for L. That is the short side. THen add two for the next side, and...
January 27, 2007

Linear Approximation
Use linear approximation, i.e. the tangent line, to approximate 1/0.104 as follows: Let f(x)=1/x and find the equation of the tangent line to f(x) at a "nice" point near 0.104 . Then use this to approximate 1/0.104 . L(x)=f(a)+f'(a)(x-a)...i think. You're ...
October 14, 2006

sociology/enviromental science
Help me! Wow everyone on here from Axia UOP! Great The ETH 125 and SCI 275 are blowig my mind especially the SCI 275(enviromental) AGGGGGG Does anyone know how to do a risk assessment on Malathion????
July 20, 2006

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