Monday
September 26, 2016

Posts by CHELsea

Total # Posts: 818

Math
But my homework is giving me a choice of 5 answers 2/7 3/8 1/7 1/3 2/5 Which one is it?
August 16, 2016

Math
Thank you
August 16, 2016

Math
John has 21 coloured pencils in a bag. 6 of the pencils are red. John pulls out one pencil at random. What is the probability that it will be red?
August 16, 2016

Math
There is a question on this paper but I agree with you it does not have the right information thanks anaways
August 10, 2016

Math
Find the volume of a cake of edge 4cm.
August 10, 2016

Maths
Express four hundred and one thousand eight hundred and nine in figures.
August 10, 2016

Math
Add 3 hours 43 minutes and 5 hours 56 minutes.
August 10, 2016

Math
Thanks
August 10, 2016

Math
What is the value of 0.7 of 70?
August 10, 2016

Math
Thank you very much ur the best
August 8, 2016

Math
London for example ilford county
August 8, 2016

Math
I don't mean to bother you but has anyone done the 11+ exam or is going to do it?
August 8, 2016

Math
Sorry im new here so I don't know if he answered it or if it was something else but thanks Damon
August 8, 2016

Math
That the answer?
August 8, 2016

Math
If one pack of lawn feed treats 12 square metres,how many packs are needed for a lawn 15m long and 4m wide?
August 8, 2016

Math
Thanks
August 8, 2016

Math
Sam has saved twice as much as Mick,but only one-fifth as much as Benji.If Mick has saved £23,how much has Benji saved?
August 8, 2016

Math
Thank you very much 😀
August 8, 2016

Math
If £480 is shared in the ratio 1:2:3,what is the value of each share?
August 8, 2016

Math
Thanks so much
August 8, 2016

Math
How many 10cm x 10cm tiles are needed to tile an area 2m long and 1.2m wide?
August 8, 2016

Algebra
Idk need help
July 22, 2016

Algebra
number of hours they worked at a cake shop during the holidays and the number of cakes they delivered in a week. Graph shows 0 to 60 on x axis and y axes at increments of 10. The label on the x axis is Weekly Hours Worked, and the label on the y axis is Number of Cakes ...
July 22, 2016

Physics
A photon has a frequency of 7.3 × 10–17 Hz. Planck’s constant is 6.63 × 10–34 J•s. The energy of the photon, to the nearest tenths place, is × 10–50 J.
May 11, 2016

Chemistry
If you had observed the fate of an ice cube at 25 degrees Celsius, what would you conclude about the spontaneity of the process H2O (s) <-> H2O (l) ? I know for it to be spontaneous, delta G has to be negative, but how can I determine the delta G with the info given in ...
March 21, 2016

stats
A particular normal distribution has mean of 575 and standard deviation of 150. What X values form the boundaries for the middle 60% of the data? Round answers to two decimal places. Lower boundary: Blank 1 Upper Boundary: Blank 2
February 21, 2016

Math
24-4=? Use that number and divide it by how many problems there were to begin with.
December 7, 2015

Heart of Darkness
1. Different settings. Consider how Kurtz and the pilgrims act differently in the following settings. • Belgium For this one I said they act very civilized because they want to keep up appearances, but I don't remember any specific examples • The Congo Kurtz is ...
December 6, 2015

Chemistry
Which substances are not ionized in a aqueous solution? Hi, KBr, H2SO4, HNO2, AgCl, Ca(NO3)2
October 19, 2015

Chemistry
A compound isolated from oil of mint has a characteristic cool, refreshing odour. It is frequently used in cough drops to ease the pain of a sore throat. This compound contains only C, H, and O. If 95.6 mg of this compound burns completely in O2, and yields 269 mg of CO2 and ...
October 18, 2015

Chemistry
A compound isolated from oil of mint has a characteristic cool, refreshing odour. It is frequently used in cough drops to ease the pain of a sore throat. This compound contains only C, H, and O. If 95.6 mg of this compound burns completely in O2, and yields 269 mg of CO2 and ...
October 18, 2015

Chemistry
1. The formation of water-insoluble chloride salts, especially silver(I) chloride, is useful for the analysis of compounds that contain chlorine. Consider the following unbalanced equation: _____ BaCl2(aq) + _____ AgNO3(aq) --> _____ AgCl(s) + _____ Ba(NO3)2(aq) a. Balance ...
October 18, 2015

Chemistry
1. Ammonia gas can be prepared by the following unbalanced equation: _____ CaO(s) + _____ NH4Cl (s) --> _____ NH3(g) + _____ H2O(g) + _____ CaCl2(s) a. Balance the equation. CaO + 2NH4Cl = 2NH3 + H2O + CaCl2 b. Suppose you begin this reaction with 112. grams of CaO and 224...
October 18, 2015

Chemistry
You purchased a 5.00 pound bag of sugar (sucrose, C12H22O11) at the grocery last week to bake cookies. Conversion: 1 pound = 1 lb = 454 grams. a.How many grams of sucrose did you purchase? 454 grams (g) = 1 pound (lb) 454 g * 5 = 2270 g A 5 pound bag of sugar is equal to 2270 ...
September 23, 2015

Chemistry
An unknown organic compound is 40.00% C, 6.67% H and 53.33% O by mass. The formula weight of the unknown is 90.0g/mole. Find the empirical and molecular formulas for the unknown compound.
September 23, 2015

Chemistry
How many moles of ammonium ions and how many moles of sulfate ions are contaiuned in a 0.400 mile sample of (NH4)2SO4? Referring to the 0.400 mole sample of (NH4)2SO4 on the previous page, how many atoms of N,H,O, and S, are contained in this sample?
September 23, 2015

physics
A speeder driving down the road at a constant 20m/s passes a patrolman parked on the roadside. The patrolman waits 3 seconds then pursue the speeder accelerating at a constant 4m/s2. When does the patrolman catch the speeder
September 22, 2015

Chemistry
Part 1: Find the % by mass of each element in camphor (C10H20O). Step 1: Find the atomic mass of each element in the molecule. Atomic Mass of C: 12.0107 Atomic Mass of H: 1.00794 Atomic Mass of O: 15.9994 Step 2: Find the mass combination of each element. Carbon: 10 atoms 10...
September 21, 2015

Geometry
X= 50
September 20, 2015

Ivy tech
25
September 10, 2015

chemistry
For the following chemical reaction, how many moles of silver iodide (AgI) will be produced from 4 mol of calcium iodide (CaI2)?
April 24, 2015

Simple interest
l=40
March 24, 2015

Statistics
Dear Ms.Sue, We are working as a group, each one of us has a post based on the questions we need help with, when going back it is much easier to locate our specific questions when we see our individual names. Thank you
February 27, 2015

Statistics
The results of a nationwide survey show that 57.40% of college students have violated rules of alcohol use. The margin of error for the survey is 2.30%. What does this mean?
February 27, 2015

math
ramon spent 60% of his $437 paycheck gifts for his friends .how much did he spend
February 23, 2015

math
17 is what percent of 51
February 23, 2015

math
22 is what percent of 88
February 23, 2015

math
what is 42% of 87
February 23, 2015

math
peter spent 20% of his money. he has $40 left in his pocket . how much did he go out with.
February 23, 2015

math
Todd had $44 in his wallet. he spent 30% of his money. how much money does he have left
February 23, 2015

math
sal spent $6 out of $12. what percent of his money did he use
February 23, 2015

CHEMISTRYYY
What mass of PCl3 forms in the reaction of 70.6 g P4 with 268 g Cl2 ? P4 + 6Cl2 → 4PCl3
February 6, 2015

Chemistry
Copper is changed to copper(II) ions by nitric acid according to the following equation: 4HNO3 + Cu → Cu(NO3)2 + 2NO2 + 2H2O How many moles of HNO3 must react to produce 0.961 mol of NO2?
February 6, 2015

Math
Three eights of the cast in a musical have to sing. What fraction of the cost does not have to sing?
February 5, 2015

math
Ok. The question is 'How does the ratio of two side lengths within one figure compare to the ratio of the corresponding side lengths in the other figure?' if you just give me a hint on this please!
December 15, 2014

coordinate algebra
The area of a rectangle is found by multiplying the length by the width: A = lw. A certain rectangle has an area of x2 + 7x + 12. Factor the trinomial to find the length and width of the rectangle. In the form of a paragraph, describe the process necessary to factor the area ...
December 2, 2014

college statistics
the math SAT scores for all students who applied to the school of engineering are normally distributed with M=629 and standard deviation of 60. the school of engineering has decided to accept those students whose scores fall in the top 15%. what is th minimum score an appliant...
November 6, 2014

college statistics
the average length of time required for students to complete a test in a an introductory statistics course is found to be 50 minutes with a standard deviation of 12 minutes. if students are allowed 80 minutes to complete the test , approximately what percentage of the students...
November 6, 2014

Physics
A projectile is launched upward at 26m/s at 30 degrees from the horizontal. The whole path of the projectile takes place over level ground. How much time will the projectile be in the air?
September 28, 2014

math
26
September 22, 2014

Physics
A cat jumps on to a railing at a height of 1.20 m above the ground. He jumps at an angle of 70 degrees relative to the floor. How fast does he have to be moving when he leaves the floor in order for him to make it up to the railing?
September 18, 2014

Physics
A basketball player shot a ball. It left his hand at a height of 2.05 m above the court at an angle of 40 degrees relative to horizontal, what initial speed did the ball have if it hit "nothing but net" at the basket 4.50 m away? Assume the rim is 3.05 m above the ...
September 18, 2014

Physics
A ball leaves a kicker's foot with a velocity of 23.0 m/s and at an angle of 40 degrees up from the ground, how far did the ball travel before being caught by another player?
September 18, 2014

Physics
The swim portion of a triathlon takes place in a river and is an out-and-back course. The river has a steady current that is 0.400 m/s and the athletes swim against the current for 750m before returning and swimming with the current for the second 750m. If one competitor can ...
September 18, 2014

geometry
If ac=5x-16 and gf = 2x-4 then af =
September 3, 2014

Calculus - Simpson's Rule and Arc Length
Can any show me step by step on how to get this? I keep on getting different answers... Thank You! Use Simpson's rule with n=10 to estimate the arc length of y=x^(-1/3), for 1 <= x < 6.
July 31, 2014

mathematics
4 quarters of x is 36. X is equal to A)9 B)50 C)144 D)40
June 8, 2014

project
Virginia ratified the constitution with the help of all of the following men EXCEPT: A.Washington B.jefferson C.henry D.Madison
May 6, 2014

Calc 2
i know that for 3/k(k+1)(k+2) I would use partial fraction representation
April 16, 2014

Calc 2
find the sum of the series: sum from k=1 to infinity [(3/k(k+1)(k+2))+(-2/3)^k]
April 16, 2014

Calculus II
Compute the first 5 terms of the sequence: {b(n)}n=1-> infinity = nsqrt(6n) + (5/6)^n. ((that is:(Bsub(n))from n=1 to infinity = nth root of 6n + (5/6)raised to n.)) If the sequence converges, find the limit.
April 15, 2014

Calculus II
Consider the sequence: (a,sub(n))={1/n E(k=1 to n) 1/1+(k/n)} Show that the limit(as n-> infinity) A(sub(n))= ln 2 by interpreting a(sub(n)) as a Reimann Sum of a Definite Integral.
April 15, 2014

Calc 2
Consider the sequence: (a,sub(n))={1/n E(k=1 to n) 1/1+(k/n)} Show that the limit(as n-> infinity) A(sub(n))= ln 2 by interpreting a(sub(n)) as a Reimann Sum of a Definite Integral.
April 14, 2014

Calculus II
Compute the first 5 terms of the sequence: {b(n)}n=1¨‡ = nã6n + (5/6)^n. ((that is:(Bsub(n))from n=1 to infinity = nth root of 6n + (5/6)raised to n.)) If the sequence converges, find the limit.
April 14, 2014

calc 2
my professor is killing me....
April 7, 2014

calc 2
(last one) ... Let f(t) be a function defined for all values of t. The Laplace Transform of f(t) is defined by: F(s)= ç[∘,‡](e^-st(f(t))dt). If the improper integral exists, Find the Laplace Transform for f(t)= sinhat
April 7, 2014

Calc2
Let f(t) be a function defined for all values of t. The Laplace Transform of f(t) is defined by: F(s)= ç[∘,‡](e^-st(f(t))dt). If the improper integral exists, Find the Laplace Transform for F(t)=t^2.
April 7, 2014

Calculus II
the gamma function r(x) is defined by r(x)= integral from 0 to infinity of x^n-1(e^-1)dx where n>0. Use integration by parts to show that r(n+1)=nr(n).
April 7, 2014

Calculus II
the gamma function r(x) is defined by r(x)= integral from 0 to infinity of x^n-1(e^-1)dx. find r(1), r(2), r(3)
April 6, 2014

Calculus II
using integration by partial fraction, prove that pi + integral from 0 to 1 of x^4(1-x)^4/1+x^2 = 22/7
April 6, 2014

Physics
2.3) The question says "range of speeds", so i was expecting a quadratic formula.( What do you mean by reversing mu?
March 31, 2014

Physics
@Damon: I don't understand why that is the answer for 2.1
March 31, 2014

Physics
I need to check my answers for the following: An Aston Martin V8 Vantage sports car has a maximum “lateral acceleration” of 0.96 “g’s”, after which the car begins to skid out of its turn. 2.1 Calculate the coefficient of static friction between the car...
March 31, 2014

chemistry
how much heat is required when 6.00g of water is melted at its melting point
March 24, 2014

Science 6th grade Earth's day and night ANSWERS
Queen Elsa is right! This also isn't 6th Grade
March 12, 2014

Calc 2
Find the length of the curve y^2=x^3 from the origin where the tangent line makes an angle of 45 degrees with the x-axis.
February 26, 2014

world geography/geography
The forests of the Pacific Northwest are just one of the many different ______________ in the United States where many people work in the same industry. A. elevation regions<<<< B. political regions (C. climate regions)< got this one wrong D. economic regions
February 25, 2014

algebra
A+0=a
February 22, 2014

Calculus II - Trapezoidal Rule
Find the error resulting from approximation by Trapezoidal Rule: integral (from 0 to 1) sqrt(1+ x^3) dx .... compute the results for n=8
February 17, 2014

Calculus II - Simpson's Rule
Find the Error resulted from approximation by Simpson's Rule: integral (from 0 to 1) sqrt( 1+x^3) dx ... compute the result for n=8
February 17, 2014

Calculus II
okay, i'm just not exactly sure where to start in trying to prove this though.
February 17, 2014

Calculus II
show that; given any three non-collinear points (x1,y1), (x2,y2), (x3,y3) there is a parabola p(x)=Ax^2+ Bx + c , containing the three points.
February 17, 2014

Math
Could someone help me with these questions? Thanks! a) A cargo plane left Vancouver, British Columbia (time zone −8) at 3:00 p.m. on a Monday. The plane flew for 11 h to Paris, France (time zone +1). At what local time and on what day did the plane land in Paris? b...
February 5, 2014

Physics Please check my answers
When I did it, I saw that 8 was true, is that right?
February 4, 2014

Physics Please check my answers
were the others correct?
February 4, 2014

Physics Please check my answers
A sound of 7 kHz frequency is well within the normal hearing range of most people. True. False. << 2. Sound is a transverse compression wave. True. False.<< 3. The decibel level of a sound can have a negative value. True.<< False. 4. The Doppler effect occurs...
February 4, 2014

Physics Please check my answers
Sorry, I forgot to put my answers in. 1. Complete reflection is the special case of refraction at an angle of 180. True. << False. 2. A resonant frequency is the same as a natural frequency. True. << False. 3. For a standing wave, the number of segments is an ...
February 3, 2014

Physics Please check my answers
1. Complete reflection is the special case of refraction at an angle of 180. True. False. 2. A resonant frequency is the same as a natural frequency. True. False. 3. For a standing wave, the number of segments is an integer equal to the number of half-wavelengths. True. False...
February 3, 2014

Physics Please check my answers
Were the first 2 correct?
February 3, 2014

Physics Please check my answers
1. A fluid can only be a liquid. True << False 2. One atmosphere is equal to 14.7 psi. True << False 3. In a fluid, pressure depends on the density of the fluid and the depth. True False << 4. Pascal's Principle says that the buoyant force on an object ...
February 3, 2014

  1. Pages:
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. 6
  8. 7
  9. 8
  10. 9
  11. Next>>