Wednesday

August 31, 2016
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*

**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 = nsqrt(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¨‡ = nã6n + (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*