
math
3 brothers had a contest to see who could jump the farthest.Mario jumped 4 feet.Cesar jumped 6 feet farther than Mario,and Ramon jumped half as far as Caear.Which number sentence could be used to find the r,the distance that Ramon jumped? A.4+62=r
asked by NrGliight on May 9, 2012 
chemistry
The volume of an aqueous solution of NaCl at 25oC is expressed as a function of the amount m in 1kg of solvent in the following form; V/cm3 = 1000.94 + 16.4 (m/mol) + 2.14 (m/mol)3/2  0.0027 (m/mol)5/2 Find the partial molar volume of NaCl and water in 1
asked by pritisha on August 13, 2018 
College Mathematics
Guys, could you please help me with this problem? I'm a bit lost. Consider a population that begins growing exponentially at a rate of 5% per year and then follows a logistic growth pattern. If the carrying capacity is 100 million, find the actual growth
asked by Miguel on August 8, 2008 
word problem
A 62 foot rope hangs from the top of a pole. When pulled taut to its fullest length the rope reaches a point on the ground 31 feet from the base of the pole. Find the height of the pole to the nearest tenth of a foot. Let p equal the height of the pole.
asked by Sammie on September 24, 2010 
Physics
In this lab we did, we measured the angles of light that came through a piece of this special plastic. We had to find out the index of refraction for each of the angles of incidence in two different cases. The question asks "Is there a good agreement
asked by Emily on February 14, 2008 
Algebra
A problem involving a ball being thrown in the air is modeled with a quadratic function. Which of the following would you be solving for if asked to find the time at which the ball will reach its maximum height? A. an xintercept of the graph B. the
asked by Emma on July 24, 2014 
Physics
A force F acts to the right on a 4.81 kg block. A 2.53 kg block is stacked on top of the 4.81 kg block and can slide on it with a coefficient of friction of 0.2 between the blocks. The table has a coefficient of friction of 0.23. The acceleration of
asked by Ahmed on September 28, 2014 
Math Help and check
The weights of ripe watermelons grown at Mr. Smith's farm are normally distributed with a standard deviation of 2 lb. Find the mean weight of Mr. Smith's ripe watermelons if only 5% weigh less than 18 lb. (Give your answer correct to one decimal place.)
asked by Tom 6 on June 15, 2013 
Statistics
The ages (in years) of 10 infants and the number of hours each slept in a day Age, x: 0.1, 0.2, 0.4, 0.7, 0.6, 0.9, 0.1, 0.2, 0.4, 0.9 Hours slept, y: 14.9, 14.5, 13.9, 14.1, 13.9, 13.7, 14.3, 13.9, 14.0, 14.1 Find the equation of the regression line. Then
asked by Amanda on April 4, 2012 
chemistry
Use activity coefficients to find the concentration of hydrogen ions in a solution of 90.0 mM butanoic acid and 0.05 M NaCl. The ionization constant of butanoic acid is Ka = 1.52 × 105. Take the size of C3H7COO– to be 500 pm. How do I calculate the
asked by Elena on October 3, 2014 
bridge
Mr. Feng conducted five math tests. Trinity had completed four tests and scored 79, 78, 82, and 75. She wanted to achieve an average of 80% in her math tests. Write an inequality to find the minimum score Trinity can make on the fifth test in order to
asked by Summer on September 6, 2016 
math
Divers looking for a sunken ship have defined the search area as a triangle with adjacent sides of length 2.75 miles and 1.32 miles. The angle between the sides of the triangle is 35 degrees. To the nearest 100th, find the search area. 2.08mi 2.9mi 1.04mi
asked by hill on April 15, 2012 
trigonometry college
For two hours, a boat sails straight from port A to port C with a speed of 50 miles per hour. Port B is due east of port A, and the bearing of line segment BC is 20 degrees south west. Find the bearing of line segment AC. I really don't know what's the
asked by jessica mantujac on February 21, 2015 
College Algebra
Suppose that the price per unit in dollars of a cell phone production is modeled by p = $45 − 0.0125x, where x is in thousands of phones produced, and the revenue represented by thousands of dollars is R = x · p. Find the production level that will
asked by Bri on October 5, 2016 
physics
3. A man leaves his home by car and travels 5 km on a road running due East. The driver then turns left and travels 2 km due north to a junction where he joins a road that goes North West and drives a further 2 km. Find his displacement from home by then.
asked by karen on February 2, 2014 
more math
1.) If c=12âˆš3 cm, then a=___ and b=___. 2.) A refrigerator has a width of 3 feet. The angle of elevation from the bottom corner to the opposite corner is 65º. What is the height of the refrigerator? 3.) In a 306090 triangle, the shorter leg has
asked by Unknown on June 12, 2010 
Physics
A car's initial velocity of 13.5 m/s accelerates at a rate of 1.9 m/s^2 for 6.2 s. Then, it accelerates at a rate of 1.2 m/s^2 until it stops. 1) What is the car's maximum speed? 2) What is the total time from the start of the first acceleration until the
asked by Erica on February 1, 2012 
Physics
The soccer goal is 23.05 m in front of a soccer player. She kicks the ball giving it a speed of 17.97 m/s at an angle of 25.83 degrees from the horizontal. If the goalie is standing exactly in front of the net, find the speed of the ball just as it reaches
asked by Lindsay on November 6, 2007 
MATH
Brenda donates part of her salary to the local childrens hospital each month by having $15 taken out of her monthly paycheck. Write an integer to represent the amount taken out of each paycheck. Find an integer to represent the change in the amount of
asked by Brandon Savon on September 14, 2014 
chemistry
A 2.000g sample of magnesium was burned in air to form an oxide. After the product was purified it was found to have a mass of 3.317g. What is the empirical formula for the product? I know how to find a empirical formula, I just don't understand what
asked by Tatiana on October 29, 2009 
Physics
Two capacitors A and B having capcitance 2micro farad and 6 micro farad are charged separately to same potential of 120 volt.Now pisitive plate of A is connected to negative plate of B and negative plate of A is connected to positve plate of B. Find final
asked by Afzaal on June 20, 2017 
physics
a projectile is thrown from the ground with an initial velocity of 20.0m/s at an angle of 40 degrees above the horizontal, find the maximum height,the time required to reach its maximum height,c) it velocity at the top of the trajectory.d) the range of the
asked by daniel on February 19, 2015 
Chemistry.
The complete combusion of 0.5763 grams of glucose in a bomb calorimeter (Cbomb = 6.20 kJ/degrees C) raises the temperature of the calorimeter by 1.45 degrees C. what is the food value of glucose in calories per gram? (Hint: remember 1 Cal = 4.184 kJ) i do
asked by Rachel on March 29, 2011 
physics
An incident Xray photon of wavelength 0.2800nm is scattered from an electron that is initially at rest. The photon is scattered at an angle of 180.0 degrees and has a wavelength of 0.2849nm. Use the conservation of linear momentum to find the momentum
asked by Leah on April 26, 2008 
Math
I have 16 numbers: 3,5,10,11,15,20,8,11,9,10,10,12,13,14, 15,10. These numbers have to be arranged in a 4 by 4 (horizontally and vertically) where each row equals 44. Please Help! Jumping rope can burn 600 calories per hour. write and solve an inequality
asked by Dianne on December 14, 2006 
Physics help please!!!
A 2.10 kg frictionless block is attached to an ideal spring with force constant 315N/m . Initially the block has velocity 3.75m/s and displacement 0.270m . Find (a) the amplitude of the motion. (b) the maximum acceleration of the block. (c) the maximum
asked by john on March 27, 2012 
Physics
If the distance between two slits is .05mm and the distance to the screen is 2.5m find the spacing between the first and second order bright fringees for yellow light of wavelenght 600nm. d=5x10^5m L=2.5m wavelength= 6x10^7m x=? x=wavelength*L/d
asked by Andrea on April 22, 2008 
physics
A typical steel Bstring in a guitar resonates at its fundamental frequency at 240 Hertz. The length of the string is 0.620 m. What is the wave velocity along the string? Find your answer in m/s, but do not enter units. IS THE ANSWER 148.8m/s?
asked by Jamie on March 31, 2011 
AP PHYSICS
A gymnist is swinging on a high bar. The distance between his waist and the bar is 1.1 m, as the drawing shows. At the top of the swing his speed is momentarily zero. ignoring friction and treating the gymnist as if all his mass is located at his waist,
asked by Mondo on November 13, 2010 
physics
A gymnast is swinging on a high bar. The distance between his waist and the bar is 1.26 m, as the drawing shows. At the top of the swing his speed is momentarily zero. Ignoring friction and treating the gymnast as if all of his mass is located at his
asked by heather on February 28, 2011 
Physics
Suppose a monatomic ideal gas is changed from state A to state D by one of the processes shown on the PV diagram. Find the total work done on the gas if it follows the constant temperature path AC followed by the constant pressure path CD. A = 2atm and
asked by Dan on December 6, 2010 
calculus
A rocket rises vertically from a point on the ground that is 100m from an observer at ground level. The observer notes that the angle of elevation is increasing at a rate of 12∘per second when the angle of elevation is 60∘. Find the speed of the rocket
asked by ibo on September 29, 2010 
Math
a. Suppose a market research company finds that at a price of p = $30, they would sell x = 58 tiles each month. If they lower the price to p = $18, then more people would purchase the tile, and they can expect to sell x = 70 tiles in a month’s time. Find
asked by Jill on September 30, 2011 
Precalc
Find an equation of a rational function that satisfies the given conditions. Vertical asymptote: x = 4 Horizontal asymptote: y = 0 Xintercepts: none Yintercepts (0, 1/4) Multiplicity of 1 Removable discontinuity: x = 1 End behavior: x > infinity, f(x)
asked by Max on November 13, 2017 
Math Answer Check
P is a point on the terminal side of θ in standard position. Find the exact value of the six trigonometric functions for θ. P(8, 8) Ans: cotangent: 1 secant: negative square root 2 cosecant: negative square root 2 sin: square root 2 / 2 cosine: square
asked by Anonymous on March 18, 2015 
Social Studies
Here's the question i have been struggling with: "Imagine you could go back to the Canada of 1014. What attitudes would you find most difficult to deal with? Why? What specific social values do you hold that would conflict with those commonly held in 1914"
asked by Joash on September 13, 2016 
Business Cal
The research department for a hardware chain has determined that at one store the marginal price of x boxes per week of a particular type of nail is: p'(x)=4000/(2x+15)^3 Find the demand equation if the weekly demand for this type of nails is 10 boxes
asked by Alex on December 4, 2006 
Statistics
A family consists of ten children. Assuming that the sexes are equally probable, find the expected number of boys in the family. What is the probability that the expected number of boys will not occur? (Not sure where to start) I got partial credit and I
asked by Megan on October 19, 2015 
Physics
A 2.10 kg frictionless block is attached to an ideal spring with force constant 315N/m . Initially the block has velocity 3.75m/s and displacement 0.270m . Find (a) the amplitude of the motion. (b) the maximum acceleration of the block. (c) the maximum
asked by chiongo on October 24, 2014 
statistics
In a poll of voters in a certain city, 32% said that they backed a bill which would limit growth and development in their city. The margin of error was reported as 1.7% with 90% confidence. Determine the bounds for the confidence interval. A. (88.3%,
asked by debbie on October 23, 2011 
physics repost
Three masses are aligned along the x axis of a rectangular coordinate system so that a 2 kg mass is at the origin, a 3kg is at (2,0) m, and a 4 kg mass is at (4,0) m. Find (a) the gravitational force exerted on the 4 kg mass by the other two masses and (b)
asked by Anonymous on December 9, 2007 
Calculus
The demand function for a bottle of hand lotion is p(x)=0.78+0.0003x, where x is the number of bottles sold and p is the price, in dollars. The cost function is c(x)=4800.32x+0.0005x^2. Find the marginal profit when 700 bottles of hand lotion are sold.
asked by matt on October 19, 2016 
ph
A gymnast is swinging on a high bar. The distance between his waist and the bar is 1.15 m, as the drawing shows. At the top of the swing his speed is momentarily zero. Ignoring friction and treating the gymnast as if all of his mass is located at his
asked by alika on October 2, 2014 
Math
1. Simplify & state any excluded values c5 ― c²25 2. Simplify & state any excluded values x²  x  6  x² + 7x + 10 9. Find the constant of variation, k, for y= –8 when x = 12. 10. Write an inverse variation to model the
asked by Pb&J on May 21, 2018 
chem
how many milliter of .246 M HNO3 should be added to 213 ml of 0.00666 M 2,2'bipyridine to give a pH of 4.19? please help, does this problem need to be solved with ka or kb?. Is 2,2' bipyridine a base, this is the problem from my text book, but it is not
asked by bun on February 2, 2010 
Physics
A gamma ray with 700KeV energy is ComptonScattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.
asked by Paul on September 23, 2014 
Chemistry (AcidBase)
Butanoic acid (Ka = 1.52 x 105) has a partition coefficient of 3.0 (favouring benzene) when distributed between water and benzene. Find the concentration of butanoic acid in each phase when 20.0 mL of 0.10 M aqueous butanoic acid is extracted with 25 mL
asked by Daniel on January 21, 2015 
Physics
A gamma ray with 700KeV energy is ComptonScattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.
asked by Paul on September 23, 2014 
Physics
A gamma ray with 700KeV energy is ComptonScattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.
asked by Sarah on September 24, 2014 
Physics
A gamma ray with 700KeV energy is ComptonScattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.
asked by Sarah on September 23, 2014 
Chemistry
Butanoic acid (Ka = 1.52 x 105) has a partition coefficient of 3.0 (favouring benzene) when distributed between water and benzene. Find the concentration of butanoic acid in each phase when 20.0 mL of 0.10 M aqueous butanoic acid is extracted with 25 mL
asked by Daniel on January 19, 2015 
SS
The Aztecs adapted to their environment mainly by using terracing and irrigation living a nomadic huntergather lifestyle trading peacefully with neighbors  Settling along the coasts where they could find fish How did the Aztec become so powerful? they
asked by butternutsquash on January 16, 2018 
Enlish
In which of the following sentences does the use of prepositional phrases make it harder for readers to find the main point of the sentence? A. The senator chose to run on a platform that cut taxes for the wealthy. B. In what way is a political group
asked by feecan on February 11, 2018 
English
In which of the following sentences does the use of prepositional phrases make it harder for readers to find the main point of the sentence? A. The committee voted on several of the issues under consideration. B. In what way is a political group considered
asked by brooke on October 21, 2016 
Algebra
Thank you Christina.. I am taking Algebra online...something I would never recommend....How would I write the equation of the line passing through (6,37) and (1,12)? the most common way is to use y=mx + b where m is the slope and b is the yintercept so
asked by Misty on July 27, 2007 
Chemistry
Find the mass of water (H2O) needed to react with 150 grams of potassium (K) 2K(s) + 2 H2O (g)2KOH +H2(g) How do I get the number of moles in H2O? Desperate to understand this. I got K= 150g./39.0983=3.84 mols of K. Then would it be 3.84(2mols H2O/7.68)
asked by Teresa on October 27, 2014 
Physics
A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the end of the slide traveling horizontally. One person hits the water 5.00 m from the end of the slide in a time of 1.000 s after leaving the slide. Ignoring
asked by Vince on October 26, 2009 
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
asked by Chelsea on 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
asked by Chelsea on October 18, 2015 
Physics
Need help with part b... I got a to be k = 94.985 N/m I can't figure out how to go about doing part b.. A platform of mass 0.79 kg is supported on four springs (only two springs are shown in the picture, but there are four altogether). A chunk of modeling
asked by Anonymous on December 5, 2010 
Operations Management
Setup Times Read the case study below “HiHo YoYo, Inc.”. Write a short summary of each of the four methods for selecting the order in which to release the products to printing. Complete a short analysis for each method which provides the average flow
asked by Gabe on July 18, 2011 
College Alegebra
I know I have to take the log of both sides, but I don't seem to get how they work out! Can anyone explain how to do 3e^(1+x) = 2 AND 10^(2x+3) = 280 If you walk me through one I should be able to figure out the other. Hopefully... I think you need to go
asked by Lost in Logarithms on April 1, 2007 
probability
two fair sixsided dice are rolled and the sum of the dots on the top faces is recorded. a) complete the table, showing the number of ways each sum can occur sum: 1 2 3 4 5 6 7 8 9 10 11 12 ways:1 2 3 b)use the table to find the probability of the
asked by mary on November 27, 2012 
math
for every 8cds sold, there were 12 dvds sold. a combined total of 70 cds and dvds were sold. how many cds were sold that day? write a proportion to show the relationship and solve it to find the number so cds sold
asked by dawn on January 25, 2009 
precalculus
A bacteria culture initially contains 1500 bacteria and doubles every half hour. a) Find an expression for the number of bacteria after t hours. Q(t)= b) The number of bacteria after 20 minutes is (the answer must be an integer) c) The number of bacteria
asked by josh on March 2, 2011 
Physics
A racket ball is struck in such a way that it leaves the racket with a speed of 5.6m/s in the horizontal diriction. when the ball hits the court it is a horizontal distance of 1.85 meters from the racket. FIND the height of the racket ball when it left the
asked by Alyssa on November 29, 2009 
Math Help
Hello! Can someone please check and see if I did this right? Thanks! :) Directions: Find the exact solutions of the equation in the interval [0,2pi] cos2x+sinx=0 My answer: cos2x+sinx=cos^2xsin^2x+sinx =1sin^2xsin^2x+sinx =2sin^2x+sinx+1=0
asked by Maggie on February 2, 2015 
Math
Jim owns a small business. There was a loss of $26 on Thursday and a loss of $11 on Friday. On Saturday there was a loss of $9, and on Sunday there was a profit of $13. Find the total profit OR loss for the 4 days. A $33 loss B $59 profit C $19 loss D $26
asked by Cashmere <3 on March 6, 2019 
Math~Polynomials
1)6g+8k9g+2k(1point) 3g+10k 3g+10k*** 17gk 10k3 2)4x+6x^2+5x(1point) 7x^3*** 6x^2+9x 6x^29x 6x^2+x 3)a^2+5a3a^2(1point) 5a+2a^2 2a^2+5a*** 3a^2+6a 5a3a^2 4)3x^2+8x+7x(1point) 3x^2+15x*** 18x^3 3x^2+1 3x^2x 5)Find the degree of
asked by Gabby on May 13, 2013 
Math :(
Please help me with this. Can you explain to me how to find the answer? Multiply 3.8*10^8 by 7.2*10^3, leave your answer in a scientific notation. 2.736*10^4 2.736*10^5 2.736*10^6 27.36*10^5 Honestly, I don't the answer to the question So please forgive
asked by I Dont Matter on March 13, 2018 
physics
A monkey standing on the ground wants to climb to the top of a vertical pole 13m tall.he climbs 5m to 1seconds and slips downward 3m in the next 1seconds..he again climbs 5m in 1sec ANd slips by 3m in the next second and so on..draw the xt graph of his
asked by kaycee on January 20, 2016 
11th grade
The arch of a bridge is a semi ellipse, the span is thirty feet and the top of the arch is ten feet above the major axis. the roadway is horizontal and is two feet above the arch. find the vertical distance from the roadway to the arch at five feet
asked by student on September 28, 2008 
physics
A girl and the bike she is riding have a combined mass of 73.7 kg and are initially at rest but then she tosses the jug of water in her hand the forward direction. If the jug has a speed of 3.0m/s relative to the ground and the girl and bike move in the
asked by alyssa on September 15, 2014 
Statistics Mean and Median Question
Statistics Find The Mean and Median Question 28. IQ Scores: Use the listed IQ scores. IQ tests are designed so that the mean IQ of the population is 100. Does the sample mean suggest that the sample is consistent with the population? IQ: 96 89 87 87 101
asked by Lexus on May 13, 2016 
Financial managemetn
A firm's cost of financing is equal to its: WACC, required yield that investors seek for various kinds of securities, required rate of return that investors seek for various kinds of securities, or all of these answers. I am tempted to pick all of these,
asked by Charles on December 5, 2009 
Physics
A table can be modeled as a flat block supported by four identical legs. If the mass of the top block is 10 kg and each leg is a uniform rod with height of 1m and mass of 5 kg. Find the gravitational potential energy of the table. Take the ground as the
asked by Ho on March 10, 2014 
maths
A) Sam jogs 6 laps around a circular running track which has a radius of 30 meters. How far does she jog in total? B)Tom and Jerry decide to find the perimeter of their garden. Tom measures the length as 5.2 meters while Jerry measures the width as 370cm.
asked by Anonymous on February 24, 2011 
geometry
Really need help on this one Use formula to find the lateral area and surface prism area of the given prism. height=2m ends=7m and 7.28m front=29m not sure how to explain can give answer choices if that might help; 472m^2;486m^2 443m^2,486m^2 472m^2,479m^2
asked by lilman on May 25, 2012 
math
A fair coin is flipped independently until the first Heads is observed. Let the random variable K be the number of tosses until the first Heads is observed plus 1. For example, if we see TTTHTH, then K= 5. For k = 1,2,...,K, let Xk be a continuous random
asked by Var on October 15, 2018 
PHYSICS NEED HELP FAST
a 1.0kg beaker containgin 2.00kg of oil with a density of 916kg/m3 rests on a scale. a 2.0kg block of iron is suspended from a spring scale and completly submerged in the oil, find the euilibrium readings of both scales.density of iron 7860.
asked by ricki on February 13, 2011 
precalc
The angle of elevation to the top of a building from a point on the ground 20 degrees and the angle of elevation from a point 25 feet farther away is 12 degrees. Find the height of the building. How would I begin to solve this problem? I do not know what
asked by adam on December 25, 2014 
Maths Help!!
Melisa used 0.6kg of red sand to make a mural on the wall. She added 250g of blue sand to it. Finally she added 500g of white sand to half of the mixture. Find the mass of the mixture that has white sand in it. Express your answer in kilogram
asked by Jane on August 15, 2014 
math
9. On a spelling test Carlos had to spell 25 words. He earned 4 points for every word he spelled correctly. Which equation can be used to find p, the total number of points Carlos earnedfor spelling w words correctly? A p w −. B p = 4. ) C p
asked by anne on February 14, 2014 
MATH
FOOTBALL. During a field goal attempt, the function h(d)= 0.02d+ 0.9d models the height, h(d) meters, of a football in terms of the horizontal distance, d meters, from where the ball was kicked. Find the horizontal distance the ball travels until it first
asked by Jeanine on July 13, 2008 
Physics  one last time
A forearm with a mass of 1.2kg supports a put with a mass of 5.44 kg. The forearm is 0.050m long; it's perpendicular to the arm is 0.35m long, the center of gravity is at 0.15m from the elbow. Find the force exerted by rhe biceps and the force on the elbow
asked by Sukie on February 27, 2009 
stats
so the question is: the weights of fish in a certain lake are normally distributed with a mean of 10, a standard deviation of 6. if 4 fish are selected what is the probability that the mean weight will be between 7.6 and 13.6? so usually to find prob, we
asked by paul on October 25, 2015 
precalculus
Assume that the number of bacteria follows an exponential growth model: P(t)=P0ekt . The count in the bacteria culture was 900 after 20 minutes and 1600 after 30 minutes. (a) What was the initial size of the culture? (b) Find the population after 80
asked by kevin on November 7, 2016 
Calculus
The top and bottom of a can must be made of copper that costs two cents per square inch and the curved side is to be made of aluminum that costs one cent per square inch. Find the radius and height of the can that will maximize the volume of the can where
asked by Kristen on December 15, 2008 
PHYSICS NEED HELP FAST
a 1.0kg beaker containgin 2.00kg of oil with a density of 916kg/m3 rests on a scale. a 2.0kg block of iron is suspended from a spring scale and completly submerged in the oil, find the euilibrium readings of both scales.density of iron 7860.
asked by ricki on February 13, 2011 
math
A sum is invested at compound interest payable annually. The interest in two successive years was Rs 900 and Rs 981. Find the sum. If the sum of all internal angles and sum of all external angles of a regular polygon are equal, then the number of sides of
asked by adam on November 20, 2015 
Chem year one
what is the balanced net ionic equation for the oxidation of hydrogen peroxide by permanganate ion and find out how many moles of hydrogen peroxide react with one mole of permanganate ion. would the answer be: 2MnO4^ + 6h^+ + 5H2O2 > 2Mn^2+ + 8H2O +
asked by kay on November 22, 2013 
Precalculus
Find the distance along an arc on the surface of the earth that subtends a central angle of 1 minute. (1 minute = 1/60 degree) This is a nautical mile. Note that the radius of the Earth is 3960 miles and there are 1760 yards in a mile. Express your answer
asked by Greg on September 10, 2012 
Finite!!!
John Buys a used car costing $6000. He agrees to make payments at the end of each monthly period for four years. He pays 12% interest compounded monthly. What is the amount of each payment? Find the total amount of interest John pays on the loan.
asked by Kristen Morris:) on December 13, 2011 
Precalc Trig
here's the question: solve for cos(2theta)=1 if you graph r= cos(2Theta) then graph r=1 you find that there are four places where the graphs intersect. however, when solved algebraically, there are two solutions which can be represented in an infinitely
asked by Wulramm on November 20, 2015 
Math (please check my answer!!)
openstudy(.)com/updates/attachments/514a5d2ae4b05e69bfac38d2mimisilly1363828099165ikk.png The dashed triangle is a dilation image of the solid triangle with the center at the origin. Is the dilation a enlargement or reduction? Find the scale factor. I
asked by Rena on November 16, 2016 
chemistry
Hi ! Could you please help me to see through this problem. *I know it's asking me to find the hydrogen ion concentration in a bleach sample. *If the pH meter reads 9.55..this suggest to me this is a base. Maybe,I can use the equation: pOH = log (OH^) =
asked by Cliff on December 12, 2010 
Mathematics
An investor wants to know the amount she should pay for an oil well expected to yield an annual return of 30000 for the next 30 years, after which the well will be dry. Find the amount she should pay to yield a 14% annual return if a sinking fund earns 10%
asked by Maddie on November 17, 2008 
bio101
2. Find a media piece—article, video, presentation, song, or other—that recognizes the fundamental concepts of chemistry in biology. Include the link or reference citation for the piece and describe how it helped you better understand how fundamental
asked by kelly on January 26, 2012 
Math
Twenty tires are tested to see if they last as long as the manufacturer claims they do. Three tires fail the test. Two tires are selected at random without replacement for an inspection. Find the probability that both tires fail the test. Which is greater,
asked by Steve on June 2, 2014 
Human Biology
For a portion of Junior year next year, we're supposed to build a human skeleton out of anything we can find. So most people build them out of styrofoam or clay. Do you think building a skeleton out of twigs would be creative and/or relatively easy?
asked by Megan on June 24, 2010
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