Sunday
December 21, 2014

Posts by Jenny


Total # Posts: 1,256

physics
In trying to lift a heavy stone into a moving truck, a worker utilizes rope, a rug, and two long planks of wood. Identify the forces at work in making it too hard for the worker to just lift the stone on his back. HELP!!
May 9, 2013

Math
Thank you both!!
May 8, 2013

Math
So the questions was-->Factor the following algebraic equation and describe the process by which it is done: x²+ 3x – 10 = ? I solved the questions correctly but my teacher said I need to show it algebraically not arithmetically. & she said that I need to show how...
May 8, 2013

math
Steve, thanks for the formulas but I already came up with them, my teacher just wanted me to show the process in which to find the area.
May 8, 2013

math
can someone help me in finding the process in finding the area for a triangle, trapezoid, circle and rectangle
May 8, 2013

Phase Changes
The heat of fusion of water is 335 J/g, the heat of vaporization of water is 2.26 kJ/g, the specifc heat of ice is 2.05 J/deg/g, the specific heat of steam is 2.08 J/deg/g and the specific heat of liquid water is 4.184 J/deg/g. How much heat would be needed to convert 10.73 g ...
May 8, 2013

Math
I have a question that i've worked through but can't seem to figure out how to converge it to kg. A trail mix contains a 4: 7 ratio of raisins to peanuts. How many kilograms of raisins are there if there are four kilograms of peanuts in the mix? 4/7 X x/4 CROSS ...
May 8, 2013

Math
give a one-sentence definition fora polynomial equation
May 7, 2013

Phase Changes
The heat of vaporization of water is 2.26 kJ/g. How much heat is needed to change 3.74 g of water to steam?
May 7, 2013

gas stoiciometry
What volume of ammonia gas will be produced when 1.44 L of nitrogen react completely in the following equation? N2 + 3H2 = 2NH3
May 6, 2013

Gas Stoichiometry
What mass of ammonia is produced when 3.08 L of nitrogen (at STP) react completely in the following equation?
May 6, 2013

chemistry
We have a tank that contains O2 at 146 mmHg, N2 at 146 mmHg, and CO2 at 138 mmHg. We then add 135 mmHg of Ar. What is the pressure in the tank?
May 6, 2013

chemistry
We have a tank that contains O2 at 146 mmHg, N2 at 146 mmHg, and CO2 at 138 mmHg. We then add 135 mmHg of Ar. What is the pressure in the tank?
May 5, 2013

chemistry
Calculate the partial pressure of helium in a 1.00 L flask that contains equal numbers of moles of He, Ne, and Ar at a total pressure of 8.35 atm.
May 5, 2013

science
In trying to lift a heavy stone into a moving truck, a worker utilizes rope, a rug, and two long planks of wood. Identify what forces are at work in making it too hard for the worker to just lift the stone up on his back.
May 3, 2013

math
that is everything the question had...it does not have any more information
May 3, 2013

math
Ms.Sue why is it incomplete?!
May 3, 2013

math
Month J F M A M J J A S O N D TOTAL 0 0 0 0 1 21 27 16 12 2 0 0 The chart above represents the monthly rainfall in inches in Calcutta in a certain year. Calculate and explain the significance of the following measures based on this data.
May 3, 2013

math
To square 75, one can multiply (70)(80) and add 25 to that product. Can someone explain how this would work, without calculating?
May 3, 2013

math
To square 75, one can multiply (70)(80) and add 25 to that product. Can someone explain how this would work, without calculating?
May 3, 2013

Math
A trail mix contains a 4: 7 ratio of raisins to peanuts. How many kilograms of raisins are there if there are four kilograms of peanuts in the mix?
May 2, 2013

maths
what length is each side of a rhombus if its perimetre is 120cm
April 24, 2013

math
3, answer = 500 4, answer = 10 5, 382. 50
April 16, 2013

math
Graph the function f(x)=6-1/(x+4)^2 using transformations. State: a.the domain b.the range c.the asymptotes i do not get this at all, i am totally lost! please help!!!
April 15, 2013

math
a cycle company make bicycles, tricycles an unicycles. Last week they made 120 more bicycles than unicycles, and 4 times as many tricycles as unicycles. If they made 75 more bicycles than tricycles, how many unicyles did they make? I dont understand how to do this, please help
April 10, 2013

Math
A car wheel has a diameter of 0.4 meters. Work out how many full turns the wheel makes when the car travels a kilometer
April 10, 2013

Algebra please help!!
Find the number of terms in each sequence. 1. 2,-6, 18,-54,,,,,-4374 Find the common ratio r and the value of a1 using the information given. (assume r >0) 2.a3=324, a7=64 Find the indicated sum. 3. a1=2, r=-3; find s8 4. E like symbol with a 10 on top. On the bottom k=1 to...
April 8, 2013

Algebra please help!!
Find the number of terms in each sequence. 1. 2,-6, 18,-54,,,,,-4374 Find the common ratio r and the value of a1 using the information given. (assume r >0) 2.a3=324, a7=64 Find the indicated sum. 3. a1=2, r=-3; find s8 4. E like symbol with a 10 on top. On the bottom k=1 to...
April 8, 2013

Algebra please help!!
Find the number of terms in each sequence. 1. 2,-6, 18,-54,,,,,-4374 Find the common ratio r and the value of a1 using the information given. (assume r >0) 2.a3=324, a7=64 Find the indicated sum. 3. a1=2, r=-3; find s8 4. E like symbol with a 10 on top. On the bottom k=1 to...
April 8, 2013

Algebra
I need some help with algebra as I'm confused as to how to solve them. Find the common difference d and the value of a1 using the information given. 1. a6= 5/4, a8= 9/4 Evaluate each sum. 2. E like symbol that has a 29 on the top. On the bottom n=1 and to the right (4n-1) ...
April 8, 2013

Algebra
Thank you this was very helpful!
April 8, 2013

Algebra
I need some help with algebra I'm not sure how to get to the answer. Find the number of terms in each sequence. 1. a1=4 an=42 d=2 2. a1--0.3 an=-36 d=2.1 3. 1/12, 1/8, 1/6, 5/24, 1/4,......9/8 Evaluate each sum. 1. There is an e like symbol that has a 15 on top on the ...
April 8, 2013

math
If Deborah ate five pieces of a pizza that was cut into 16 pieces, what percentage of the pizza did she eat?
April 5, 2013

Physics
A compact disk rotates from rest to 500 rev/min. in 5.5s. a) What is the angular acceleration assuming it is constant. b) How many revolutions does the disk make in 5.5 s. c) How far does a point on the rim 6 cm from the center of the disk traveling during the 5.5 s.
April 4, 2013

Chemistry
Determine the number of particles in this sample. Identify the unit as a formula unit or a molecule. 58 g of chromium (III) sulfate.
April 3, 2013

math
a cleaner charges $0.50 per square foot to polish wood floors. a school hall has a floor area of 30 feet by 50 feet. what would be the total cost to polish the floor of the school hall? A. $80 B. $375 C $750 D $1,500 I think it is C.
March 27, 2013

math
A cleaner charges $0.50 per square foot to polish wood floors. A school hall has an area of 30 feet by 50 feet. What would be the total cost to polish the floor of the school hall? A.$80 B.$375 C.$750 D.$1,500 What is the answer?
March 26, 2013

algebra
What is 80 is 20 times as many as 5 equal in a number sentence?
March 25, 2013

3rd grade math
it is A. 1/2
March 20, 2013

Physics
A) With what minimum speed must you toss a 190 g ball straight up to hit the 15.0 m-high roof of the gymnasium if you release the ball 1.70 m above the ground? Solve this problem using energy. B) With what speed does the ball hit the ground?
March 20, 2013

Physics
A) With what minimum speed must you toss a 190 ball straight up to hit the 15.0 -high roof of the gymnasium if you release the ball 1.70 above the ground? Solve this problem using energy. B) With what speed does the ball hit the ground?
March 20, 2013

4th grade math
the answer is 168 because there are 12 inches in a foot. you could add 12 for 14 times or do 12*14.
March 19, 2013

Dynamics, Math
a plane is flying horizontally at an altitude of 420m. A bomb was released, how far horizontally point bomb hit the ground?
March 19, 2013

Dynamics, Math
a plane is flying horizontally at an altitude of 420m. A bomb was released, how far horizontally point bomb hit the ground?
March 19, 2013

English
This time management tool is used for recording how you spend your time daily.
March 13, 2013

math
5x+4y-5z=44 3x-4y+3z=-10 6x-3y+6z=-15 help solve it
March 13, 2013

math
4x-y-3z=8 2x+2y-z=3 6x+y-3z=2 help me solve matrices
March 13, 2013

english
so what is correct answer,thanks
March 8, 2013

english
Answer is A
March 8, 2013

Physics
A 50.0g ball of clay traveling east at 3.00 m/s collides and sticks together with a 50.0g ball of clay traveling north at 3.50m/s. What is the speed and direction of the resulting ball of clay?
March 7, 2013

Calculus
Determine if the series converges or diverges. Sum (n=1, infinity) (2*4*6...2n)/n! My main problem is I have no idea what to do with the numerator.
March 4, 2013

Physics
A conical pendulum is formed by attaching a 0.200kg ball to a 1.00 m-long string, then allowing the mass to move in a horizontal circle of radius 40.0cm . The figure (Figure 1) shows that the string traces out the surface of a cone, hence the name. A) What is the tension in ...
February 28, 2013

Physics
A 220g block on a 54.0cm -long string swings in a circle on a horizontal, frictionless table at 70.0 rpm. A) What is the speed of the block? m/s B) What is the tension in the string? N
February 28, 2013

Physics
A 220g block on a 54.0cm -long string swings in a circle on a horizontal, frictionless table at 70.0 rpm. A) What is the speed of the block? m/s B) What is the tension in the string? N
February 28, 2013

maths
A box of mass 3 units rests on a horizontal rough surface and is tied to the end of a rope. Peter pulls on the rope and exerts a force of magnitude sqrt(2g) with the rope making an angle of Pi/4 with the horizontal. Given that the box is on the point of slipping, show ...
February 27, 2013

Algebra
the length of a rectangular piece of land is 40 cm more than two times its width. the perimeter is 680 cm. Find its dimensions
February 26, 2013

maths
A particle moves in a plane with trajectory given by the polar equation, r = a(1 + cos );where a is a positive constant Suppose that the particle moves such that theta(t) =omega for all t; that is, the angular velocity theta is constant.Show that the ...
February 20, 2013

math
20
February 18, 2013

Chem II
I feel I wasnt given enough information to answer the question originally, but I will try to do my best with what I was given.
February 12, 2013

Chem II
How many grams of ethylene glycol (C2H6O2) per kilogram of water are needed to give protection up to 120 °C in a car radiator?
February 12, 2013

Calculus
Approximate the sum Sigma (lower n = 0; upper infinity) (17/3)*(-1/2)^n
February 11, 2013

Calculus
What is the graph of the sequence An = (-1)^n?
February 11, 2013

Calculus
Find the sum of the convergent series. Sigma (lower n = 0; upper infinity) 8*(4/5)^n
February 11, 2013

Calculus
Identify the two series that are the same. a. Sigma (lower n = 4; upper infinity) n(3/4)^n b. Sigma (lower n = 0; upper infinity) (n+1)(3/4)^n c. Sigma (lower n = 1; upper infinity) n(3/4)^(n-1)
February 11, 2013

Calculus
Find the values of x for which the series converges. Sigma (lower index n = 0; upper index infinity) [(x+1)/4]^n
February 11, 2013

Calculus
Determine whether the sequence with the given nth term is monotonic. Find the boundedness of the sequence. Otherwise, indicate DNE. An = ne^(-n/2)
February 11, 2013

Calculus
Determine the convergence or divergence of the series. Indicate the test that was used and justify your answer. Sigma (lower index n = 1; upper index infinity) [(-1)^n*3^n]/(n*2^n)
February 11, 2013

Calculus
Test for convergence or divergence. Indicate the test that was used and justify your answer. Sigma (lower index n = 2; upper index infinity) [ln(n)]/n
February 11, 2013

Calculus
Use the Direct Comparison Test to determine the convergence or divergence of the series. Justify your answer and show all of your work. Sigma (lower index n = 1; upper index infinity) 4^n/(3^n-1)
February 11, 2013

Calculus
Test for convergence or divergence. Indicate the test that was used and justify your answer. Sigma (lower index n = 4; upper index infinity) 1/(3n^2-2n-15)
February 11, 2013

Calculus
Determine the following about the series. Indicate the test that was used and justify your answer. Sigma (lower index n = 1; upper index infinity) [sin((2n-1)pi/2)]/n A. The series diverges B. The series converges conditionally. C. The series converges absolutely. D. It cannot...
February 11, 2013

Calculus
Determine the convergence or divergence of the series. Find the limit. Indicate the test that was used and justify your answer by showing evidence why the test succeeds or fails. Sigma (lower index n = 1; upper index infinity) 12/[n(n+3)]
February 11, 2013

Calculus
A deposit of $1000 is made at the beginning of each month in an account at an annual interest rate of 3% compounded monthly. The balance in the account after n months is An = 1,000(401)(1.0025^n - 1). (a) Compute the first six terms of the sequence {An}. (b) Find the balance ...
February 11, 2013

maths
What is the vector equation of the line joining the points (5; 0; 1) and (7; 4; 7)?
February 11, 2013

maths
prove that if a is not equal to zero and if a * b = a * c and a ^ b = a ^ c then b = c [Hint: calculate a * (b-c) and a ^ (b-c) vectors mechanics
February 6, 2013

college chem
if the length of one side of a square is 12.0, what is the perimeter of the square?
February 4, 2013

Math
where did the 1.2 come from?
January 31, 2013

Math
The markup on a used car was at least 20% of its current wholesale price. If the car was sold for $5900, what was the maximum wholesale price? (Give your answer correct to the nearest dollar.)
January 31, 2013

Math
Write each rate as a fraction in lowest terms: 48 gallons in 14 minutes
January 29, 2013

Math
Write each rate as a fraction in lowest terms: 48 gallons in 14 minutes
January 29, 2013

Math
For a certain product, one case holds 8 boxes and each box holds 12 items, how many total cases are needed to hold 500 items?
January 19, 2013

math
The world's tallest building is the Burj Khalifa in Dubai at 828 m tall. The CN Tower in Toronto is 553 m tall. Ryan wants to compare the Burj Khalifa and the CN Tower by creating rectangular prism models on a 10 cm by 10 cm square base. He has decided to represent the ...
January 15, 2013

math
A band poster that measures 90 cm by 40 cm is reduced by a scale factor of 1/6 so it can fit on a postcard. a) What are the dimensions of the postcard image? b) By what scale factor, to the nearest hundredth, was the area of the poster decreased in the reduction process?
January 15, 2013

algebra
Solve the equation. Check your solution. 164=x-59
January 15, 2013

consumer math
Lily Adams purchased a $1,000 bond at 70. The bond pays 4%. What was the cost of the bond? What was the annual interest? What is the yield (to the nearest tenth of a percent)?
January 14, 2013

consumer math
Lily Adams purchased a $1,000 bond at 70. The bond pays 4%. What was the cost of the bond? What was the annual interest? What is the yield (to the nearest tenth of a percent)?
January 14, 2013

consumer math
Joe McCain purchased 5 $1,000 bonds at 89. The bonds pay 6%. What was the cost of the bonds? $4,450 ? What was the total annual interest? What is the yield?
January 14, 2013

algebra
What was the cost of the bond? What was the annual interest? What is the yield (to the nearest tenth of a percent)?
January 14, 2013

algebra
Jane Investor purchased a $10,000 bond at 90. The annual interest is 5%.
January 14, 2013

math
The sides of a square with an area of 49 cm2 will be reduced by a scale factor of 5/8. Determine the area of the reduced square to the nearest square centimetre.
January 14, 2013

math
Jamia is deciding between two long-distance telephone plans: • Plan A charges $5 per month plus 6¢/min. • Plan B charges $20 per month plus 1¢/min. Jamia usually makes about 200 min of long distance calls each month. Which plan costs less? Show your ...
January 12, 2013

Math
3(4x+6)+7
January 7, 2013

Algebra
Kendra owns a restaurant. She decides to charge $1.50 for two eggs and one piece of toast and $0.90 for one egg and one piece of toast. How much money is she charging for each egg and each piece of toast?
January 3, 2013

MAtth
ITEM NUMBER THREE 1 Description of the item:Printer 2 Stated price on the website: 229.99 (do not round to whole dollars) 3 Website where the item was found:Staples I dont know how to do questions # 4 and 5 4 Price of item after a 10% increase with sales tax: 5 Final price:
December 18, 2012

ENGLISH 9 BIOGRAPHY
i think u should do jistin bieber because its more easier, if u do one direction then u have to write about 5 people. u can do one direction of that band.
December 15, 2012

Algebra
The number of bacteria in a stagment pond doubles every hour. A farmer sprays it every two hours and kils 3/4 of bacteria immediately. If there are 10,000 live bacteria left after the farmer sprays at noon, how many live bacteria are there at 11 p.m. that night?
December 12, 2012

My Math
thanks
December 11, 2012

My Math
am i correcect steve
December 11, 2012

My Math
i mean 1b 2c 3c 4a
December 11, 2012

My Math
I think the answers are 1 c 2a 3b 4a
December 11, 2012

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