Thursday
August 28, 2014

Posts by molly


Total # Posts: 461

Pre Cal
Let the line X-2Y=15 and the circle with equation X^2+Y^2=50 intersect at the points A and B. Algebraically find the coordinates of A and B using the information given.
August 26, 2011

Geography
I need an easy way to remember the followingg states: Montana, Wyoming, Colorado, New Mexico, Arizona, Utah, Idaho, Washington, Oregon, Nevada, and California. I have to know the capital and where it is located on the u.s. map .
August 24, 2011

Chemistry
How many calories are absorbed when 56.0 g of liquid water at 100C is vaporized to steam at 100C?
August 8, 2011

MAth
1. John’s loans for his business total $155,000. One of the loans is a SBA loan at 11% interest; the other loan is a Community Business Partner loan whose interest is 6.5% After one year the loans accumulated $12,325 in interest. What was the amount of each loan? I am not...
July 29, 2011

physics
1. An object traveling at a constant speed of 22m/s begins to experience a force of 15N in the opposite direction of its motion. (Hint given: Start by finding objects acceleration) a. How long will it take for the 8kg object to come to a complete stop once it experiences the ...
June 21, 2011

Phyics
If a 68kg object is being pulled across the hard floor with a horizontal force of 400N... a. What would the acceleration of the object be if it was on a frictionless floor? b. if there were friction, what would the force of friction be if it was pulled at a constant velocity? ...
June 21, 2011

boooring chemistry!!:(
Halogens are non-metals and if observed they form ionic bonds with metal because halogens have a high ionization energy to attract the metals. if you don't know what ionization energy is it means the energy need to to remove the electrons from an atom. Halogens also form ...
June 21, 2011

physics
How do you know that is net vertical force is equal to 0? Also what does Ffriction stand for?
June 21, 2011

physics
1. There are three forces acting on an object, a 30N force pulling right, a 50N force pushing right, and 30N frictional force pushing left. a. What is the force of gravity on this 15kg object? b. If the object is on the ground what is the normal force acting on the object c. ...
June 21, 2011

physics
That is just what my homework says but it probably does mean north of west.
June 21, 2011

physics
1. a force of 30n with a direction of 35 degrees northwest acts on point p. Find: a) the northward component on the force b) the westward component of the force Please show work. Thanks!
June 21, 2011

Physics
2. Tyler pulls a box full of baby ferrets across the floor by means of a rope that is tied to the box. The rope makes an angle of 41 degrees with the horizontal and tyler pulls on the rope with a force of 60N. a)What is the horizontal component of the force that tyler is ...
June 21, 2011

Physics
James and Steve have a contest to see who can kick a football further. James kicks the football at an angle up of 57 degrees, and a speed of 75m/s. Steve kicks the ball with a speed of 100m/s, at an angle up of 48 degrees? Who wins the contest? Please show what each variable ...
June 21, 2011

maths
calculate the surface area of the following prism cuboid; 2cm 6cm 4cm what is the surface area of the cuboid
May 21, 2011

maths
calculate the surface area of the following prism cuboid; scm 6cm 4cm what is the surface area of the cuboid
May 21, 2011

maths
a prism has a cross sectional area of 8mm2 and a volume of 224mm3 calculate the length of the prism thank you so much for your help
May 21, 2011

maths
so the cube number is 3????
May 21, 2011

maths
3 x 3 x 3 = 27 27 is a cube number
May 21, 2011

maths
a cube has a volume of 27cm3 what is the length of one side of the cube
May 21, 2011

geometry
Find the length of segment AG in the figure if the prism is 8 ft by 9 ft by 12 ft.
May 18, 2011

math urgent!!!!!!!!
you have to isolate the x or the y. So move the 5x to the other side by subtraction,-4y=8-5x, then divide each part by -4, -4y/-4=(8/-4)-(5x/-4). Gives you y=-2+5/4x. Now plug that y into the original equation. 5x-4(-2+5/4x)=8... then once you get x plug that into the original...
May 9, 2011

English
I want to write a causal argument on how kids get hooked on unhealthy/processed foods (at home-- fast foods and at school-- vending machine and cafeteria hot lunches). I'm not quite sure what exactly to write about throughout a causal argument paper on this claim. What ...
May 9, 2011

Abstract Algebra
Let ø: G--> G' be a homomorphism from the group G to the group G'. Prove that ø(a)= ø(b) if and only if ab^-1 exists in Ker(ø).
May 6, 2011

History
The revolt in Hungary (1956), the demonstrations in Czechoslovakia(1968), and the formation of Solidarity in Poland (1980's) are similar in that they
May 1, 2011

s.s (social studies)
IS THIS RIGHT ? There comes a time in history,when the Americans must break away from england and become a separate nation , equal with other nations like god planned all along.We care about what the rest of the world thinks,therefore we will clarify why we are motivated to ...
April 26, 2011

s.s (social studies)
i dont get it
April 26, 2011

s.s (social studies)
can you help me translate the declaration of independence? first passage: When in the course of human events it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate ...
April 26, 2011

Chemistry
So basically for the first 3 answers (Part (A)(B)(C)): (A)and(B) - the concentrations would be equal since the mole ratio is equal and Q = K at equilibrium. (C) - the rate of both reactions would be equal also, as Q = k, right? (D)(1) - If the volume is increased at constant ...
April 25, 2011

Chemistry
PCl5 --> PCl3 + Cl2 (Kp = 630 at 546 K) A system is prepared by placing equimolar amounts of the three gases shown in the equation above in a suitable rigid container held at constant volume. Equilibrium is established at 546 K. (A) When equilibrium is established, how does...
April 25, 2011

Life orientation
Severally improve the worlds environmental problems,on the other hand,if the current way the worlds environmental problem is bing handled.
April 8, 2011

Math
Complete the square for this conic section in standard form: x^2+y^2-6x+4y-12=0
April 3, 2011

science
what kind of heat transfer causes earth's major wind patterns
March 15, 2011

CALCULUS
hi what is the derivativ of [-18(x^2)]/[(1+2(X^3))^2] ?? thanks!~
March 10, 2011

Physics
On a cold winter morning, a child sits on a sled resting on smooth ice. When the 9.20 kg sled is pulled with a horizontal force of 40.0 N, it begins to move with an acceleration of 2.50 m/s^2. The 23.0 kg child accelerates too, but with a smaller acceleration than that of the ...
March 3, 2011

Abstract Algebra
Let A= -{-1}, that is, the set of all real numbers except -1. Define an operation on A by a*b=a+b+ab (usual addition and multiplication in R) a) Show that * is closed on A b) show that * is associative c) Find the identity element for * and verify that it is the identity d) ...
February 22, 2011

COLLEGE ALGEBRA
Suppose that R is the set of real numbers. Let f: R--> R be defined by f(x)= mx+b, where m and b are real numbers and m is nonzero. Prove that f is a bijection.
February 22, 2011

Math
Jonathan can type a 20 page document in 40 minutes, Susan can type it in 30 minutes, and Jack can type it in 24 minutes. Working together, how much time will it take them to type the same document?
February 15, 2011

US History
How did Hitler respond to Germany’s obligations under the Treaty of Versailles when he became Germany’s leader?
February 10, 2011

Abstract Algebra
Let f:A->B where A and B are nonempty. Prove that f(S1 U S2) = f(S1) U f(S2)
February 5, 2011

Algebra
The slope formula is Y2-Y1/X2-X1. So it would be 1-2/2+2 which equals -1/4
February 5, 2011

childcare
OMG u guys aren't helping I'm gonna save all my answers and post them when I'm done
February 1, 2011

science
what do you want to know?
January 31, 2011

geometry
If the perimeter of a particular square is 2011 inches, what is the area of the square, in square inches? Express your answer in decimal form to the nearest hundredth.
January 25, 2011

College Algebra
Al gives 1/2 of his marbles to bev. bev gives 1/3 of these to carl. carl gives 1/4 of these to dani. If dani was given four marbles, how many did al have originally?
January 23, 2011

algebra
Nicole can jog to work in of an hour. When she rides her bike, it takes her of an hour. If she rides miles per hour faster than she jogs, how far away is her work? NEED HELP FAST
January 21, 2011

Math
After a recent series of home improvements, four couples were having a dinner party to discuss the additions to their homes. Mike had not recently had a new bathroom. Lorraine had not yet done her kitchen, but perhaps would update it next. Chris, who is married to Renée...
January 16, 2011

algebra
-13=3(x+2)-10
January 13, 2011

Chem
I don't understand what h is
January 13, 2011

Chem
What is the energy (e) of electromagnetic radiation having a frequency of 6.32 x 10^20 s^-1?
January 13, 2011

adult education
use lattice multiplication to find the prduct of 124 x 56
December 16, 2010

accounting
please help now!!!!!
December 10, 2010

accounting
This is the question: "Use page 3 of the journal. Jornalize and post the adjusting entries." Can you tell me how to do that?
December 10, 2010

science
ive been trying to find a report for 5th grade greenhouse effect science. how can i type it to find it?
December 9, 2010

English(how is it?)
Ya you do this by eating some bananas, there ya go
December 1, 2010

Math
period = 2ð/(ð/12) = 24 months amplitude = 4000 vertical displacement = 20 000
December 1, 2010

Math
The population size, P, of owls (predators) in a certain region can be modelled by the function P(t) = 1000 + 100 sin (3.14t/12), where t represents the time in months. The population size, p, of mice (prey) in the same region is given by p(t) = 20 000 + 4000 cos (3.14t/12). ...
December 1, 2010

PHYSICS!!!
By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?
December 1, 2010

PYSCIS!!!!
By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?
December 1, 2010

Geometry
I saw it after I typed in my response to avery. Thank you very much :)
November 22, 2010

Geometry
Could you please explain why the answer is no?
November 22, 2010

Geometry
Is it possible for a triangle to have sides with the following lengths: 5, 9, 15?
November 22, 2010

college physics
A mass of 1 kg is hanging from a spring with a spring constant of 3 N/m. At a distance of 0.2 m below the equilibrium it has a velocity of 1 m/s in the upward direction. What is the amplitude of the oscillation?
November 21, 2010

College Chemistry
Calculate the vapor pressure of a solution of 0.39 mol of cholesterol in 5.4 mol of toluene at 32oC. Pure toluene has a vapor pressure of 41 torr at 32oC.
November 19, 2010

College Chemistry
How much ice can be melted at 0oC by the condensation of 1.0 kg of steam at 100.oC? (ΔHfus of ice = 6.01 kJ/mol; ΔHvap of water = 40.7 kJ/mol)
November 19, 2010

Math
Four balls are simultaneously picked at random from a jar containing 2 red balls, 2 green balls, and 6 yellow balls. What is the probability that exactly two of the selected balls will be red?
November 15, 2010

math
To find the amount of the discount, you multiply the price by the percentage out of 100. So, 35x.25=8.75 This is the same as (X/35) x (25/100) So you are getting 8.75 off. And the price you pay is.. 35-8.75 = $26.25
November 15, 2010

chemistry
What reagent would allow you to distinguish between FeCl3 and PbCl2? (As if using an analysis scheme)
November 15, 2010

Chemistry
What reagent would allow you to distinguish between BaS and NiSO4? (As if using an analysis scheme)
November 15, 2010

Chemistry
What reagent would allow you to distinguish between AgNO3 and MNSO4? (As if using an analysis scheme)
November 15, 2010

Chemistry
What reagent would allow you to distinguish between AgNO3 and MNSO4? (As if using an analysis scheme)
November 15, 2010

CHEM
What reactions does Br- have, ones that would distinguish it as a anion? As in a anion analysis scheme?
November 15, 2010

Chem
Why is BaSO4 insoluble in HNO3?
November 15, 2010

6th grade
What is the volume of a chest that is 20 inches by 10 inches by seven and one tenth inches?
November 8, 2010

Physics Help!!!
With the energy needed to warm up some amount of water from 26°C to 44°C, how high could you lift it?
November 8, 2010

Physics Help!!! solids and fluids
During a transatlantic flight, you drink a bottle of water and tightly close its lid again. Back on the ground during taxiing to the terminal, you notice that the thin plastic bottle is crushed, and you eyeball it to be only about 80 percent of its original volume (the photo ...
November 8, 2010

Chemistry
How can you determine which of any two halogens is more active?
November 7, 2010

Spanish 1
B and C
November 7, 2010

Physics HELP!!! potential energy
Two identical metal plates with small holes are aligned a distance L=6.7 cm apart. They have a potential difference of 131 Volts. An electron can enter through the hole in the negative plate and exit through the hole in the positive plate. If it enters with a velocity of 3290 ...
November 3, 2010

Physics HELP!!! Potentials and Fields
Two identical metal plates with small holes are aligned a distance L=6.7 cm apart. They have a potential difference of 131 Volts. An electron can enter through the hole in the negative plate and exit through the hole in the positive plate. If it enters with a velocity of 3290 ...
November 1, 2010

Physics HELP!!!
A car (mass 920 kg) drives up a hill (height 328 m) in 143 seconds. At the bottom of the hill, it has a speed of 24 m/s, but at the top, it has slowed down to 14 m/s. Neglecting friction, what is the average engine power
October 31, 2010

Physics HELP!!!
A car (mass 920 kg) drives up a hill (height 328 m) in 143 seconds. At the bottom of the hill, it has a speed of 24 m/s, but at the top, it has slowed down to 14 m/s. Neglecting friction, what is the average engine power
October 31, 2010

Physics
So would it be 1/2*2.6^2/30
October 29, 2010

Physics
A flywheel has a moment of inertia of 2.6 kg·m2. What is the average power needed to spin it up from rest to an angular velocity of 100 rad/s in 30 seconds?
October 29, 2010

physics:energy
Okay I got it thanks for the help.
October 27, 2010

physics:energy
watts wouldn't be the units correct. My answer is 1456.785
October 27, 2010

physics:energy
How much power is needed to push a box (mass 27 kg) over a surface (coefficient of friction μk=0.5) with a velocity of 1.1 m/s?
October 27, 2010

Physics: energy
Thank you
October 27, 2010

Chemistry
How is the solubility of a solid affected by temperature?
October 26, 2010

math
Let C(q) represent the cost, R(q) the revenue, and π(q) the total profit, in dollars, of producing q items. a) If C′(67) = 65 and R′(67) = 86, approximately how much profit is earned by item number 68? b) If C′(149) = 120 and R′(149) = 98, ...
October 8, 2010

physics
thanks, i got them all except for the first one.
October 4, 2010

physics
true or false If a net force acts on an object, the object's speed will change. An object's velocity will change if a net force acts on the object. If two object have the same acceleration, they are under the influence of equal forces. The net force which acts on an ...
October 4, 2010

English I
What is feild or Scope? I am writing a book report on Lord of the Fies by William Golding.
September 28, 2010

5th grade math
16-(3x2)x2 16-(6) x2 16-(12) 4 4is the answer and in middle school when u have parensis u dont need to put an x before the nest multipliction number it means times already
September 28, 2010

8th grade
$1 for every 4 oz 12/4
September 26, 2010

3rd grade
they don't really learn algebra they just have a box where a middle or high school student would have a variable
September 22, 2010

Physical Science
thank you
September 21, 2010

Physical Science
If you did it wasn't for me :)
September 21, 2010

Physical Science
Need help please. the once with the ( ) is my answer but i am not sure if it right. Thanks for your help. 15. If the distance from a converging lens to the object is less than the focal length of the lens, the image will be A. real, inverted, and larger than the object. (B). ...
September 21, 2010

4th grade
My mom says that the glaciers are melting because of global warming.
September 14, 2010

math
1+j=2(2j+1)
September 8, 2010

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