Friday
April 29, 2016

# Posts by Holly

Total # Posts: 418

Chemistry
Iron metal is formed during the reduction of iron(III) oxide: Fe2O3 + 3CO 2Fe + 3CO2 When 29.7 kg of Fe2O3 react with 17.8 kg of CO and 4.5 kg of Fe are recovered, what is the percent yield for the reaction?
April 25, 2016

Math
I need help please. Draw a quadrilateral that is not a parallelogram.
April 19, 2016

math
$6350 is compounded semiannually at 14% for 12 years. What is the total amount in the compound interest account? April 19, 2016 chem Calculate ΔG° (in kJ/mol) for the following reaction at 1 atm and 25 °C: C2H6 (g) + O2 (g) → CO2 (g) + H2O (l) (unbalanced) ΔGf° C2H6 (g) = –32.89 kJ/mol; ΔGf° CO2 (g) = –394.4 kJ/mol; ΔGf° H2O (l) = –237.13 kJ/mol April 10, 2016 Probability and statistics Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial.n=22, x=18, p=0.85, q=.15 March 22, 2016 physics adding to what I just posted, so the Fnet is = Force of the rolling car (mgsin(15))-Force of friction. So Fnet=5580N-5000N=580N And Fnet=ma So acceleration=Fnet/mass 580N/2200kg= 0.264m/s^2 February 29, 2016 physics the sin of the angle is 15 degrees. I just had the exact same homework problem and got the correct value for acceleration by doing what he said above. February 29, 2016 Math 2178/23 / 11 February 22, 2016 Math Find the linear speed of a point that moves with constant speed in a circular motion if the point travels along the circle an arc length = 2178/23 kilometers in time t=11 seconds? February 22, 2016 Art ya is it c February 16, 2016 Art 1. Which of the following answer choices contains a metaphor? A. His skin was sandpaper** B. The sun sparkled like a diamond C. She wanted to be like the birds and fly away D. They felt free when they ran across the doors 2. What is a key characteristic of a refrain in poetry... February 16, 2016 Math 1. Which property is NOT a characteristic of a parallelogram? A. Opposite sides are not congruent B. All angles are congruent** C. Opposite sides are parallel D. Opposite angles are congruent February 11, 2016 physics A horizontal spring with k = 110 N/m has one end attached to the wall. A 290 g block is pushed onto the free end, compressing the spring by 0.160 m . The block is then released, and the spring launches it outward. Neglecting friction, what's its speed when it leaves the ... February 9, 2016 Algebra 2 Did I solve these right? 1. f(x)= -3x + 1 g(x)= -4x^2 + x + 2 Find g(f(x) ) -4(-3x+1)^2+(-3x+1)+2 -4(-3x+1)^2-3x+1+2 3-3x-4(-3x+1)^2 3-3x-4+24x-36x^2 =21x-36^2-1 2.f(x)= -2x + 1 g(x)= -3x^2 -x -1 Find (g /f)(x) -3x^2-x-1/-2x+1 3. f(x)=-x +2 g(x)= -4x2 + x + 5 Find (f o g)(x) f... November 10, 2015 pychology According to research led by Sarina Saturn, which of the following is predicted by variations of a particular gene on the third chromosome, which influences oxytocin functioning? October 6, 2015 Math 7th grade -0.5167 is this number rational or irrational ? Thank you September 9, 2015 Algebra Using two variables - A carpenter wants to cut a 24-foot board into two pieces so that one piece is 5 times as long as the other. How long should each piece be? April 20, 2015 physics A ball is thrown vertically upward from the edge of a cliff of height 131 m. The initial velocity is 77.7 m/s. how high is the cliff? April 14, 2015 Pre-calculus help I have two problems I am stuck on, if you could show me how to solve the problems it would be much appreciated. 1) Find sin 2x, cos 2x, and tan 2x from the given information. tan x = − 1/6, cos x > 0 sin 2x = cos 2x = tan 2x = 2) Find sin 2x, cos 2x, and tan 2x from ... April 10, 2015 Delete Question Hi! Is it possible to delete a question I asked since I got it answered? Thanks! Subject: Math Date: Monday, March 23, 2015 Time: 8:27 March 24, 2015 Math Directions: Use the following matrix to perform the elementary row operations sequentially. A=[3 2 |8] [5 2 |12] 1.) (1/3) R1 From the original matrix 2.) -5R1+R R2 From matrix in question 1. March 23, 2015 Chemistry What is the molarity of an HNO3 solution if 24.1mL of a 0.250M Ba(OH)2 solution is needed to titrate a 15.0mL sample of the acid? Can you tell me the process to finding this answer? March 18, 2015 Science A sled and rider with a combined weight of 59 kg are at rest on the top of a hill 24 m high. (a) What is their total energy at the top of the hill? (b) Assuming there is no friction, what would the total energy be on sliding halfway down the hill? February 25, 2015 algebra A gym has an enrollment fee of$80 and a $25 fee per month of membership. Write an expression to represent the total cost of m months of membership? February 3, 2015 Derivatives Find derivative of y= x^3(5x-1)^4 I got y'= 2x(5x-1)^3 +16x^2+5x-1 is this right? If not what and where did I go wrong November 11, 2014 Organic chem Extraction of caffeine from tea A. Interface B. Volatile compounds, like ether September 16, 2014 Math Outside temperature over a day can be modelled as a sinusoidal function. Suppose you know the high temperature for the day is 87 degrees and the low temperature of 63 degrees occurs at 5 AM. Assuming t is the number of hours since midnight, find an equation for the temperature... September 2, 2014 Drama Postmodern theatre, like other postmodern art forms, discards many of the ideas of modernism. Theories of modern theatre propose that access to universal truths can be achieved through artistic representation of life. Postmodern theatre, however, rejects the notion of make-... August 27, 2014 Drama How is 4.48 Psychosis by playwright Sarah Kane a postmodern drama? August 27, 2014 algebra Find the present value, using the present value formula and a calculator. (Round your answer to the nearest cent.) Achieve$225,500 at 8.55% compounded continuously for 8 years, 125 days.
August 22, 2014

Alegbra
Find the present value, using the present value formula and a calculator. (Round your answer to the nearest cent.) Achieve $225,500 at 8.55% compounded continuously for 8 years, 125 days. August 10, 2014 Alegbra Assume the car can be purchased for 0% down for 60 months (in lieu of rebate). A car with a sticker price of$42,900 with factory and dealer rebates of $5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the nearest cent.)$ (b) Find ...
August 10, 2014

math
13% = 104 beads 1% = 104 divided by 13=N beads 12% = 12 x n = e So, Lucy has 96 blue beads (n = 8)
May 1, 2014

Public Speaking
Evaluating audience feedback to your speech presentation usually happens: A. before the speech. B. after the speech. C. during the speech. D. in the speech preparation
April 14, 2014

Physics
Can someone help with the following physics problem? This is the only one I'm having trouble solving. Thanks. A 3.6-m-long ladder leans against a frictionless wall as shown in the figure below. The coefficient of static friction between the ladder and the floor is 0.30. ...
April 13, 2014

Math
Oh! Ok thank you!
April 7, 2014

Math
What is the multiplicative inverse of 6 1/7? My answer- 16
April 7, 2014

Math
Thanks
April 6, 2014

Math
The volume of the cylinder is 15 cubic inches. If all the dimensions are multiplied by 2.7 what is the new volume? My Answer- 295.245
April 6, 2014

Math
April 6, 2014

Math
A triangular prism has a volume of 92 in.³ if all dimensions are multiplied by 1.6 what is the new volume?
April 6, 2014

Common Core State Exam
Thank you so much as well Ms. Sue! I knew you would cometo save the day. That is what you always do :)
April 1, 2014

Common Core State Exam
Thank you sooooooooooooo much for your help Writeacher!!!!!!!!! ;):):)
April 1, 2014

Common Core State Exam
I need some tips on dong the best I could do on the common core state exam. Please do the best you can to give tips. And if you know a website that will help me study, please do give it to me. Thank you for all you support and help :)
April 1, 2014

accounting
Liz Marett is the chief financial officer for Fulton Restaurants. She delivered the following comments in a recent conference call with analysts that follow the company: "20X5 was another excellent year. Net income was a record setting $10,000,000. Food Revenue reflected ... March 25, 2014 Human relations A female doctor attempting to explain to her 27-year-old male patient that his severe acne can be cured with a specific drug, but the side effect of the drug might be that he will be temporarily bald. March 19, 2014 Language Arts Can someone tell me what the simple subject and simple predicates are in this sentence? Thanks Sports fans trade baseball, football, or basketball cards. a. sport fans/trade b. fans/or c. baseball/or d. fans/trade March 12, 2014 drawing FOUR :) February 28, 2014 math is that the whole question or are you missing somthing January 30, 2014 pre cal f(x)=2x^2+12x-6 what is the min or max value ? January 30, 2014 Math Pre-Cal i really need the help i am so lost January 30, 2014 Math Pre-Cal how would i do that January 30, 2014 Math Pre-Cal The answer I got was 24, and it was wrong January 30, 2014 Math Pre-Cal It ask for the Min or Max value? January 30, 2014 Math Pre-Cal what is the value of f(x)=2x^2-12x-6 January 30, 2014 Math Pre-Cal Ok I understand now on that so far. How do you find the value of a quadratic function? January 30, 2014 Math Pre-Cal When I am giving the point vertex of (1,-1) and another point of (2,2) and i need to put the answere in the form f(x)=ax^2+bx+c hwo would I go about doing that? January 30, 2014 Physics Friction is usually the killer of efficiency. How does a ramp relate to friction? January 19, 2014 Physics What is one advantage and one disadvantage of using a ramp? Explain in detail. January 19, 2014 Physics What affect does changing the mass of an object on a ramp have on the efficiency of the ramp? Explain. January 19, 2014 Physics Bryan tosses a 75.0 g rock into the lake. The rock leaves hus hand at a height of 175 cm above the ground travelling at 19.0 m/s. How high above the ground will the rock travel if it is accidentally thrown straight up? How high above the water will it travel if it is thrown in... January 16, 2014 Physics Bryan tosses a 75.0 g rock into the lake. the rock leaves hus hand at a height of 175 cm above the ground travelling at 19.0 m/s. How high above the ground will the rock travel if it us accidentally bryan tosses a 75.0 g rock into the lake. The rock leaves hus hand at a height... January 16, 2014 Physics Three objects with masses m1= 36.5 kg m2= 19.2 kg m3= 12.5 kg Are hanging from massless ropes that run over a frictionless pulleys. If the system is released from rest, what is the magnitude of the acceleration in m/s^2 of mass m1? ___________________ O O O I I I I I I I I I I... January 16, 2014 Physics Three objects with masses m1= 36.5 kg m2= 19.2 kg m3= 12.5 kg Are hanging from massless ropes that run over a frictionless pulleys. If the system is released from rest, what is the magnitude of the acceleration in m/s^2 of mass m1? ___________________ O O O I I I I I I I I I I... January 16, 2014 Physics An elevator motor provides 45.0 kW of power while lifting a 2000 kg elevator 35 m. If the elevator contains six passengers of the same mass and it takes 20.0 s to accomplish this task, determine the mass of each passenger. Assume the system is 83 % efficient. January 16, 2014 Physics A microwave rated at 1000 W heats a 500 g glass of water from 10 degrees C to 55 degrees C in 2 minutes. Determine the efficiency of the energy transformation. January 16, 2014 Physics A farmer drives a 0.100 kg iron spike with a 2.00 kg sledge hammer. The sledge hammer moves at a constant speed of 3.99 m/s until it comes to rest on the spike after each swing. Assuming all the energy is absorbed by the nail, and ignoring the work done by the nail on the ... January 16, 2014 Physics A 599 g piece of silver at 150 degrees C is submerged in 1000 g of water at 5 degrees C to be cooled. Determine the final temperature of he silver and water given Heat capacity of water= 4.18 x 10^3 j/kg degrees C Heat capacity of silver= 2.49 x 10^2 j/kg degrees C January 16, 2014 Physics A mechanic uses a chain and block to lift a 875-kg engine 4.00 m to the top of the garage. The downward force in the chain over the 4.00 m distance is 5.00 x 10^4 N. How much useful work was done? Thannnkkks :) January 16, 2014 Physics A mechanic uses a chain and block to lift a 875-kg engine 4.00 m to the top of the garage. The downward force in the chain over the 4.00 m distance is 5.00 x 10^4 N. A) Calculate the work done in raising the motor B) How much useful work was done? C) What is the efficiency of ... January 16, 2014 physics weight 240N/ area 2cm2= January 6, 2014 Chem 101 In a fission reaction, uranium-235 bombarded with a neutron produces strontium-94, another small nucleus, and 3 neutrons. Write the nuclear equation for this reaction. December 6, 2013 math which expression is equivalent to 4*4*4*4*4*4*4*4? Debra has 2/3 of a pound of loose green tea leaves. If she wants to keep one-half of the tea at home and the other half at work, what fraction of a pound will she have at work? 7-5/7= what is (-7) to the fifth power in ... November 26, 2013 math What is 31x 19 in expanded algorithm? November 7, 2013 English... Urgent Uhmmm, hmm. I'm rather positive this is a website to assist you in your area of need,NOT TO DO THE WORK FOR YOU AND IN RETURN YOU RECEIVE THE REWARD. IF BY CHANCE YOU HAPPEN TO BE ILL-INFORMED IN THE AREA OF PLAGIARISM, YOU MAY SURELY WISH TO FANCY YOURSELF WITH ITS ... October 26, 2013 HSM/220 First budget resource amount was$1,600,000.00 and this budget is to be increased by 50%. So, my allocation for that increased amount becomes $2,400,000.00. I have done the following in order to get my increase total: 1,600,000*0.50=$800,000 so 1,600,000+800,000= $2,400,000.... October 25, 2013 HSM/220 PLEASE HELP!!!!!!...FOR LACK OF CERTAIN VARIABLE TYPE MATH SKILLS AND A NEED IN ASKING THIS: IS IT IN FACT THAT 1.5 IS THE SAME AS MULTIPLYING BY 0.50 IN FINDING THE ANSWER? IF MY ASSUMPTION RING TRUE, THEN I HAVE NO FEASIBLE REASON FOR CONSISTENTLY COMING UP WITH THE WRONG ... October 25, 2013 HSM/220 How do I increase a fixed sum by 50% properly? October 25, 2013 Science This is because the igneous rock could become a metaphoric rock before a sedimentary rock. An igneous rock is formed from lava and magma while the sedimentary rock is formed slowly over time by minerals layering gradually. October 23, 2013 Calculus Homework Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 0.01cm thick to a hemispherical dome with a radius of 18 meters. October 15, 2013 physics A piece of wood with mass m = 2.8 kg is held in a vise sandwiched between two wooden jaws as shown in the figure below. A blow from a hammer drives a nail which exerts a force of 440 N on the wood. If the coefficient of static friction between the wood surfaces is 0.66, what ... October 3, 2013 Calculus, check my answers, please! f(-1)=5 and f(-2)=-5 so 5--5 = 5+5= 10 that is how it is even October 2, 2013 HSM 220 I need help understanding the categorization of line-item budgets, program budgets, and functional budgets matrix for an organization? Can somebody help me understand where salaries go etc.?? September 27, 2013 Human Resources Administration I need help understanding whether salaries are put into all categories of a program budget,line-item budget,and a functional budget matrix? September 27, 2013 vocabulary The answer is C September 27, 2013 A Curious Question I am grateful for those who righteously point out others misguided pipe dreams. The way of the world now a days, you can be a very well educated in what you had believed to be "the obvious career chosen path,(i.e. doctor, dentist)but nothing is guaranteed in life so try ... September 26, 2013 A Curious Question First in your second sentence you have incorporated the wrong "two" into your sentence. The correct word is "TOO". Graduating early has many advantages if you are planning on immediately going on to a college education. If this is the case, you have ... September 26, 2013 physics I would just use x = (vi)t + 1/2 (a)(t^2) and remember that vi is -1. September 23, 2013 Math with applications Find the vertex of 1. F(x)=3(x-c)^2+1 September 23, 2013 Trigonometry Find all solutions of 4(cos(x))**2-4 sin(x)-5=0 in the interval (6pi, 8pi) I tried to work it out and got: 4(cos**2x)-4cosx -9 = 0, but I can't figure out what cosx = from there to finish the problem. July 31, 2013 Trigonometry Find all solutions of 4 (cos (x)**2)-1=0 in the interval (6pi, 8pi). (Leave your answers in exact form and enter them as a comma-separated list.) July 31, 2013 Trigonometry Find all solutions of 4(sin(x)**2)-8cos (x) -8 = 0 in the interval (2pi, 4pi). (Leave your answers in exact form and enter them as a comma-separated list.) July 31, 2013 trig Find all solutions of cos (x) + 1/2 sec (x) = -3/2 in the interval (2pi, 4pi) (Leave your answers in exact form and enter them as a comma-separated list.) July 31, 2013 Accounting The answer for this question is not here. The answer is$72,000
July 28, 2013

Chemistry
Barium carbonate and nitric acid reacts in a double displacement reaction. One of products also dissociates and evolves carbon dioxide. Write the net ionic reaction including the proper use of phase labels for this solution run in aqueous solution. After this the following ...
June 24, 2013

physics
A parallel-plate capacitor is formed from two 1.0{\rm cm} \times 1.0{\rm cm} electrodes spaced 2.8{\rm mm} apart. The electric field strength inside the capacitor is 1.0\times10^{6}{N/C}} part a What is the charge (in {\rm nC}) on positive electrode? part b What is the charge...
June 19, 2013

Physics
What is the smallest radius of an unbanked (flat) track around which a motorcyclist can travel if her speed is 25 km/h and the coefficient of static friction between the tires and road is 0.28?
June 13, 2013

chemist geniuses
3. Describe the subatomic structure of the nucleus, including the structure of each nucleon. Draw a picture. Describe the forces that hold the nucleus together and draw them on your diagram. Explain how beta emission works.
May 30, 2013

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