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April 26, 2015

Posts by Rosie


Total # Posts: 136

Second Grade Fractions
4/6 of 18 is ?
March 17, 2011

math
If x+y=-10 and x-y=2, what is that value of x?
March 15, 2011

Physics
Two dogs are pulling on opposite ends of a bone. One dog pulls to the right with a force of 50N while the other pulls to the left with a force of 40N. Are the forces balanced or unbalanced? How do you know? What is the net force on the bone? Would the bone's velocity ...
March 7, 2011

science
minerals used by animals for bones
March 2, 2011

calculus
Given f(x) = x3, evaluate lim h->o f(a+h)-f(a)/h
February 24, 2011

calculus
Sketch the graph of F(x).
February 24, 2011

calculus
A state charges polluters an annual fee of $20 per ton for each ton of pollutant emitted into the atmosphere, up to a maximum of 4,000 tons. No fees are charged for emissions beyond the 4,000-ton limit. Write a piecewise de nition of the fees F(x) charged for the emission of x...
February 24, 2011

calculus
The fee per ton of pollution is given by A(x) = F(x)=x. Write a piecewise de nition of A(x). What is the limit of A(x) as x approaches 4,000 tons? As x approaches 8,000 tons?
February 24, 2011

Algebra
How do you solve this kind of problem?
February 13, 2011

Math
Thank you, I got it now :)
January 24, 2011

Math
The point (-1, -1) is in quadrant IV. How to determine if this is true or false?
January 24, 2011

physics
A 59 kg diver stands at the end of a 32 kg springboard, the spring board is 3 m long. The board is attached to a hinge at the left end, but simply rests on the right support which is half way along the board. What is the magnitude of the vertical force exerted by the hinge on ...
December 9, 2010

physics
Jason takes off across level water on his jet-powered skis. The combined mass of Jason and skis is 75 kg (the mass of the fuel is negligible). The skis have a thrust of 200 N and a coefficient of kinetic friction on water of 0.1. Unfortunately, the skis run out of fuel after ...
December 9, 2010

physics
A block slides down a frictionless ramp. If the ramp angle is 22 degrees and the length of it is 25m. find the speed of the block as it reaches the end of the ramp, assuming it started sliding from rest at the top.
December 9, 2010

College Chemistry
Indicate the number of unpaired electrons present in Kr Atom...?
November 19, 2010

general chemistry
thank you very much for your help!
October 17, 2010

general chemistry
A student needs to determine by titration with NaOH the precise %KHP in an unknown sample that is thought to contain approximately 50%KHP. Approximately what mass of sample should the student use in order to use about 20mL of 0.1005 M NaOH to reach the endpoint of the ...
October 17, 2010

Algebra 1
s(x)=1/5x^2 Can anyone help me find the vertex of this equation and the line of symmetry I tried to do it but am finding in difficult. Thanks.
August 30, 2010

statistics t test
If a population proportion is 0.29 and if the sample size is 120, 25% of the time the sample proportion will be less than what value if you are taking random samples? Round your answer to 2 decimal places, the tolerance is +/-0.01.
July 18, 2010

us history
what question was resolved with the great compromise?
May 4, 2010

Geometry-confused!
Find the length of a side of a rhombus whose diagonals measure 10 and 24?
May 3, 2010

math (find my grade)
10%=test 20%=in class work 30%=homework 40%=quiz
April 18, 2010

math (find my grade)
1%= TEST 2%=IN CLASS WORK 3%=HOMEWORK 4%=QUIZ AND THE GRADES UNDER EACH ONE ARE MY GRADES!!!!!!!!!!
April 18, 2010

math (find my grade)
there is now 76%. THE 76% IS A GRADE.
April 18, 2010

math (find my grade)
1% of my grade 82% 4% of my grade 76% 2% of my grade 100% 100% 100% 100% 100% 100% 100% 100% 82% could you please find my average. thank you!!!!
April 18, 2010

chemistry
the number of moles of oxygen gas needed to react with 4.0 moles mg is
March 3, 2010

geography
WHICH ONE ARE THE CONTINENT WITH MOST POPULATION AND WHIC ONE ARE THE ONE WITH LEAST POPULATION
October 15, 2009

Math Fractions
How do you solve this and problems like it: 3/4 of _____ is 90 5/6 of 120 is ______
March 19, 2009

history
Is there a form that is used for current events for 7th grade students?
September 7, 2008

physics
a metal spoon is placed in one of two indentical cups of hot coffee. Which cup will be cooler after a few minutes?
January 24, 2008

physics
How does air within winter clothing keep you warm on cold winter days?
January 24, 2008

Multiplying and Dividing Rational Expressions
15x(3x-5)
May 16, 2007

Chem (monomers)
Hi I'm having major problems with monomers in proteins. One what is a monomer Two what is it doing in a protien? Much thanks, Rosie A "monomer" is a single unit of a polymer and a polymer is just a bunch of monomers (single units) hooked together. Teflon is a ...
April 15, 2007

Chemistry (Check)
Regarding 2&3: 2, always true. For a substance of known molar mass, the number of moles of a sample can (always) be calculated from the mass of the sample. The molar mass of O2 is 32.00 g. (This is the substance of known molar mass). Let's say you have a sample of 16 g O2...
February 5, 2007

spelling
the answer is throw duh
January 16, 2007

Geography
1) GRANITE 2) TRENCH 3) CONVECTION/CURRENT 4) VOLCANOES 5) MAGMA 6) RICHTER 7) EARTHQUAKE 8) LITHOSPHERE 9) SURFACE 10) CORE 11) RING/OF/FIRE 12) TSUMAMI 13) SEISMOGRAPH 14) BASALT The missing clue is THE EARTHS CRUST
January 2, 2007

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