1)Find the sixth term of the geometric sequence for which a1=5 and r=3 A)1215 B)3645 C)9375 D)23 I chose A 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3... A)aN=-12(1/3)n-1 B)aN=12(-1/3)n-1 C)aN=-12(-1/3)-n+1 D)aN=-12(-1/3)n-1 I chose C 3)Find

92,404 questions, page 727
1. Please tell me if i did this correct

Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Errors Frequency 51-53 9 54-56 19 57-59 16 60-62 24 63-65 25 This is what I got: Mean = 59.19 Variance = 1.43 Standard Deviation =

asked by Jennifer on October 16, 2011
2. algebra

when the lenght of each side of a square is increased by 7in., its area is increased by 189in.^2. find the lenght of the side of the original square.

asked by shekyra nelvis on July 27, 2016
3. math

A ladder is resting against a wall. the foot of the ladder is 8 feet from the wall, and the top of the ladder is 19 feet from the ground. FIND THE slope of the ladder

asked by rachel on October 16, 2011
4. Maths

There are 12 balls in a bag, where n of them are white balls. If 2 balls are chosen at random from the bag without replacement, the probability of choosing at least 1 white balls is 19/33. Find n.

asked by Mily on April 30, 2014
5. Calculus

Find the sum of the squared errors for the linear model f(x) and the quadratic model g(x) using the given points. f(x) = −0.7x+3, g(x)=0.06x^2−0.6x+2 (−3, 5), (−1, 3), (1, 2), (3, 1) linear model-? quadratic model -?

asked by Calculus Help on December 8, 2015
6. Calculus

Find the sum of the squared errors for the linear model f(x) and the quadratic model g(x) using the given points. f(x) = 2.0x − 3, g(x) = 0.09x^2 + 1.6x − 3 (−1, −4), (1, −2), (2, 0), (4, 6), (6, 9) linear model-? quadratic model- ?

asked by Calculus Help on December 8, 2015
7. statistics

The average marks of 30 students in mathematics is 69. If the class leader’s mark is included then the average becomes 70. Find the class leader’s mark.

asked by Sharon on July 25, 2011
8. Math

Find the solution. 1. sqrt2 sin x + 1 = 0 My ans: x = 5pi/4 + 2npi and 7pi/4 + 2npi 2. sec x - 2 = 0 My ans: x = pi/3 + 2npi and 5pi/3 + 2npi

asked by Anonymous on October 25, 2015
9. calculus

Suppose f of x equals 3 times x minus k when x is less than 5 and equals 1 plus k times x when x is greater than or equal to 5.Find the value of k that would make f continuous at x = 5. -3 0 7/3 no such k will make f continuous

asked by ashley on February 5, 2014
10. math

Given the four rational numbers below, find the greatest difference and the greatest product using two of the numbers for each operation. 2 1/3,1.5, -1.25, -3 1/4 Difference= -0.95 is what I got for the first answer. Product= 4.0925 is what I got for the

asked by Wossum on September 3, 2016
11. math

A drawer contains 4 red socks and 4 blue socks. Find the least number of socks that must be drawn from the drawer to be assured of having a pair of red socks

asked by Anonymous on August 25, 2014
12. GRAPHING HELP

Find the coordinates of the vertex and the equation of the axis of symmetry of the parabola given by the equation. x = − 1/3^2+4 vertex (x, y) = axis of symmetry Sketch the graph.

asked by KMILLhelp on April 21, 2014
13. Calculus

A rectangle is to be inscribed under the curve y=4cos(.5x). The rectangle is to be inscribed from x=0 to x=pi. Find the dimensions that give max area and what is the max area.

asked by Will on February 1, 2018
14. English

Another question regarding works cited in MLA style. I would like to put 2 photos in my work How do I do that? I cannot find anywhere how to put photos in MLA style. Thank you

asked by tee on December 3, 2010
15. Algebra

Find the number of integer quadruples (a,b,c,d) with 0\leq a,b,c,d \leq 100, such that a and b are the roots of the quadratic equation x^2-cx+d=0, while c and d are the roots of the quadratic equation x^2-ax+b

asked by John on March 4, 2013

A man sold his radio-set at a loss of 20%.If he would have sold it for â‚¹90 more, his loss would have been only 10%. Find cost price of radio-set.

asked by Ansh on August 1, 2016
17. Math

Help Find the area between the x -axis and the graph y = 2 x 3 from x = 1 to x = 5. 54 square units 312 square units 122 square units 212 square units

asked by Bri on April 4, 2019
18. Math

How do you find the length of the base of a triangle? My math problem is: The area of a triangle is 33.6 inches. If the height is 4 inches what is the length of the base? thank you

asked by John on April 25, 2013
19. ALG

Find the coordinates of the vertex and the equation of the axis of symmetry of the parabola with the given equation. y = 8x^2 + 48x − 3 vertex (x, y) = axis of symmetry ________

asked by KELLY on April 21, 2014
20. Algebra

A rectangular pool has a perimeter of 142 feet. The length is 25 feet longer than the width. Find the length and width of the pool.

asked by Emily on March 5, 2015
21. maths

A boat goes 12 km upstream and 40 km downstream in 8 hours. It can go 16 km upstream and 32 km downstream is the same time. Find the speed of the boat in still water and the speed of the stream.

asked by raghav on June 4, 2014

Does anyone know how to find the rate with ONLY principal and time? (no interest) Refer to this: Investment A: Rate as 'R,' principal as $8000, time as '4 years,' and interest as 'SI' asked by Anonymous on November 17, 2017 23. Math A tree casts a shadow of 12 meters when a 5meter post nearby casts a shadow of 6 meters find the height of the tree. asked by mary jean on August 26, 2015 24. Statistics Suppose that 92% of all SFSU students own a cell phone. Find the probability that 7 out of 10 random selected SFSU students own a cell phone asked by Mitch on February 24, 2011 25. Math Let f(x)=x+1‾‾‾‾‾√ and g(x)=3x−5. Find f∘g and g∘f, and their respective domains. 1. (f∘g)(x)= 2. What is the domain of f∘g ? Answer (in interval notation): 3. (g∘f)(x)= 4. What is the domain of g∘f ? Answer (in interval asked by tish on March 1, 2016 26. CAMBRIDGE Points P and Q are both in the line segment AB and on the same side of its midpoint. P divides AB in the ratio 2 : 3, and Q divides AB in the ratio 3 : 4. If PQ = 2, then find the length of the line segment AB. asked by YASHIKA on February 21, 2017 27. math A number consists of two digits whose sum is 9. if three times the number is equal to eight times the number formed by interchanging the digits. find the number asked by reshman on March 25, 2016 28. calculus Find the area of the region lying inside the polar curve r = 2(1 − cos theta) and outside the polar curve r + 4 cos(theta)= 0. asked by Bob on October 13, 2010 29. Algebra2 Find the values of the inverse function in radians. 1. sin^-1(0.65)? answer choices: a. 0.71+2pi n and -0.71+2pi n b. 0.71+2pi n and -3.85+2pi n c. 0.86+2pi n and -0.86 +2pi n d. -0.61+2pi n and 2.54+2pi n My answer is B asked by Steve on May 2, 2017 30. calculus Find the area of the region lying inside the polar curve r = 2(1 − cos theta) and outside the polar curve r + 4 cos(theta)= 0. asked by Bob on October 13, 2010 31. Algebra the smaller of two numbers is 18 less than the larger number. If 5 timnes the larger number esxceeds four times the smaller by 100. Find the numbers. asked by Kalee on September 10, 2015 32. math Enter your answer and show all the steps that you use to solve this problem in the space provided. A party store offers small balloons and large balloons. You can choose from pink, blue, green, and yellow balloons. You can choose from silver, gold, and asked by niki on February 20, 2019 33. physics An athlete whose mass is 94.0 is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a barbell that weighs 600 . He lifts the barbell a distance of 0.50 in a time of 2.2 . Part A Use Newton's laws to asked by Anonymous on November 9, 2012 34. healthh Keep a five day Journal about noticing people around you of all ages at home, school, work, or in TV or movies as to body size and weight and what your inner thoughts and reaction to them are. Do you find yourself making judgments or having asked by Nani on August 10, 2015 35. chemistry Ibuprofen, the active ingredient in advil, is made up of carbon, hydrogen, and oxygen atoms. When a sample of ibuprofen, weighing 5.000 g, burns in oxygen, 13.86 g of CO2 and 3.926 g of water are obtained. What is the simplest formula of ibuprofen? My asked by Chris on October 17, 2006 36. world history During the fourteenth century, Japanese women of aristocratic rank A. saw marriage customs change to their detriment. B. were transformed because of their ability to hold their own property separately from their husbands. C. became freer due to the asked by bob on May 28, 2011 37. College/education class What are the most effective and ineffective uses of objective assessments for instructors and learners? What is your view on the relative advantages and disadvantages of using objective tests? How might you incorporate objective assessments in your asked by Cathy on April 21, 2015 38. Philosophy What is the history of continental philosophy in reaction to Hegelian idealism? I need some help answering this question. I cannot find any information on this. Any help would be greatly appriciated. Thanks. Thank you for using the Jiskha Homework Help asked by Marie on May 18, 2007 39. Physics In a cathode ray tube, electrons initially at rest are accelerated by a uniform electric field of magnitude 4.71 x 105 N/C during the first 5.49 cm of the tube's length; then they move at essentially constant velocity another 47.9 cm before hitting the asked by Ashley on January 24, 2012 40. math Danny and Erica are 3km apart on a straight road. They set out to walk uniformly at the same time. If they walk in an opposite direction, they will meet after 24 minutes. If they walk in the same direction, Danny will catch up to Erica after 6 hours. Find asked by anonymous on April 1, 2018 41. Math The density if a sample is 5.8g/cm^3. the sample fills a cylindrical container whose hieght is 10.2 cm and whose radius is 4.3cm Find the mass of the sample. Mason, I'm sure the reason you haven't received any responses yet is that you haven't indicated asked by Mason on July 23, 2007 42. Math A consumer buys n light bulbs, each of which has a lifetime that has a mean of 800 hours, a standard deviation of 100 hours, and a normal distribution. A light bulb is replaced by another as soon as it burns out. Assuming independence of the lifetimes, asked by Alex on April 27, 2011 43. Physics HELp In Figure 8-34, a 1.2 kg block is held at rest against a spring with a force constant k = 785 N/m. Initially, the spring is compressed a distance d. When the block is released, it slides across a surface that is frictionless, except for a rough patch of asked by Kelly on March 31, 2010 44. physics A 15-kg block is on a frictionless ramp that is inclined at 20° above the horizontal. It is connected by a very light string over an ideal pulley at the top edge of the ramp to a hanging 19-kg block, as shown in the figure. The string pulls on the 15-kg asked by Mazdaly on April 15, 2015 45. Math Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. The diameter of a tire is 2.5 ft. Use this measurement to answer parts a and b. Show all work to receive full credit. Find the circumference of the asked by Me on February 8, 2019 46. Physics In Figure 8-34, a 1.2 kg block is held at rest against a spring with a force constant k = 785 N/m. Initially, the spring is compressed a distance d. When the block is released, it slides across a surface that is frictionless, except for a rough patch of asked by Kelly on March 30, 2010 47. Physics In a cathode ray tube, electrons initially at rest are accelerated by a uniform electric field of magnitude 4.71 x 105 N/C during the first 5.49 cm of the tube's length; then they move at essentially constant velocity another 47.9 cm before hitting the asked by Megan on January 25, 2012 48. Pre-Calc 20 **EDIT** A rectangle has a diagonal of 18cm. The diagonal creates a 60 degree angle at the base of the triangle. Write an exact expression for the base and the height of the triangle. My teacher wants the base and height answered in roots so do you think asked by Julie on September 23, 2016 49. calculus At a summer campfire, the radius of a marshmallow on a stick expands at the rate of \ {r ' (t)} = \frac{2.4 }{3 t + 6} mm/s where t is the time of heating in seconds. Initially the radius was 3.8 mm. Find the radius after 16 seconds using the following asked by Marcus on March 8, 2014 50. Chemistry A person falls in water at 0 C. After 30 min in the water, he/she suffers from hypothermia, as their body temp drops to 30 C. Since we are water.... we assume the heat capacity is 4.18 J/g/C. 180 Kcal of energy is required to raise the persons temp to 40 asked by Dave on June 10, 2009 51. Chemistry Lab A 15.00 mL sample of a weak acid with Ka = 3.52x10-4, was titrated with 0.475 M KOH. The equivalence point was reached after addition of 19.5 mL of KOH with the phenolphthalein indicator. Determine the molar concentration of the original acid solution, asked by Erin Lee on October 30, 2012 52. English 11 In English we are reading the crucible and we have to find modern day witch hunt examples.witch hunt being people who are guilty in the opinion of public opinion, but is actually innocent in the court of law. Some examples he and some others gave were asked by Elaina on October 18, 2012 53. grammar Could you correct me my mistakes. Please • What are you most passionate about? One of my greatest passion is helping others. I like helping people find solutions that meet their specific needs. 7.How do you typically spend your leisure time? In my asked by Eliz on October 10, 2017 54. Math An underground tank full of water has the shape of a circular cone with a base radius 5m and height 4m at the top. The top of the tankl is 2m below the ground-surface and is connected to the surface by a spout. Find the work required to empty the tank by asked by Breona on November 17, 2010 55. Physics An airplane of mass 1.3 104 kg is moving at 64 m/s. The pilot then revs up the engine so that the forward thrust by the air around the propeller becomes 7.2 104 N. If the force exerted by air resistance on the body of the airplane has a magnitude of 4.0 asked by Jane on December 13, 2010 56. problem solving Given that • The distance from the earth to the sun is 1.5*10^11m, and • The mass of the sun is 1.9 *10^30 kg , 1. use Kepler’s Law of Periods to find the period of the earth’s orbit, recorded in seconds:; 2. show how to express your answer in asked by lynn on November 4, 2008 57. Physics A 95 gram piece of metal is heated to 98°C and placed into 200mL of water insulated at 20°C. If the equilibrium temperature is 27.20, find: The heat gained by the water. calories: _________ The specific heat of the metal. cal/(g°C): ________ Hint: 1 mL asked by Anna on July 9, 2016 58. physics A 14.7 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 124.0 N parallel to the incline, which makes an angle of 11.0 ◦ with the horizontal. The coeﬃcient of kinetic friction is 0.31 and the crate is pulled a asked by Anonymous on November 9, 2012 59. Pre Calc I am familiar with this type of problem but can't seem to get the right answer. Use the given zero to find the remaining zeros of each function f(x)=x^4-9x^3+7x^2-91x-348,zero 5-2i I normally would use synthetic division with the root 5-2i bringing it down asked by Zach on November 13, 2009 60. Science A rod of length L=1.80m is mounted to a wheel (solid cylinder) of radius R=8.00cm. A massless rope is wound on the wheel, and then connects to a block of mass m=0.250kg. The mass is released from rest and allowed to fall. 1. Find the tension in the rope. asked by Leila on June 16, 2014 61. Physics In Figure 8-34, a 1.2 kg block is held at rest against a spring with a force constant k = 695 N/m. Initially, the spring is compressed a distance d. When the block is released, it slides across a surface that is frictionless, except for a rough patch of asked by Holy Grail on March 31, 2010 62. statistics Suppose that about 20% of those called will find an excuse (work, poor health, travel out of town, etc.) to avoid jury duty. If 14 people are called for jury duty, what is the probability that all 14 will be available to serve on the jury? Round your asked by karen on August 20, 2010 63. Physics "A person is playing a small flute 10.75 cm long, open at one end and closed at the other, near a taut string having a fundamental frequency of 600.0 Hz. If the speed of sound is 344.0 m / s, for which harmonics of the flute will the string resonate? In asked by Kyle on June 4, 2012 64. Chemistry! urgent what volume of gas at 40°C and 1.50 atm is necessary to react with 300 L of hydrogen gas measured at the same conditions? 2H2 (g) + O2 (g) --> 2H20 (g) 1.50 atm= 151.KPa How would I solve this? Because I can't use: PV = nRT I have pressure, temperature, asked by Sarah on January 10, 2018 65. physcs A potter's wheel having a radius 0.55 m and a moment of inertia 11.6 kg·m2 is rotating freely at 55 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 66 N. Find the effective asked by Kelsey on April 17, 2010 66. Physics A pilot in a small plane encounters shifting winds. He flies 20.0 km at 30∘ north of east, then 50.0 km due north. From this point, he flies an additional distance in an unknown direction, only to find himself at a small airstrip that his map shows to be asked by Anwar on September 14, 2017 67. Computer science 3.We often come across the terminology like 6b-bit processor, 64-bit operating system and 64-bit system bus. Do you understand those terminologies? What exactly those numbers represent? Please find out the exact meaning of three terminologies above (give asked by Md Farhad Hossain on February 3, 2013 68. English Let's survey your family members' TV viewing habits. 1. Find out TV programs your family like most. 2. Investigate how many hours they watch TV. 3. Each gathers the investigation result, and compares how different their family members' favorite TV asked by John on May 31, 2008 69. Calculus A projectile is launched at an angle of 60 degrees to the horizontal from 6.5 ft above the ground at an initial speed of 150ft/sec. Assume the x-axis is horizontal, the positive y-axis is vertical (opposite g), the ground is horizontal, and only the asked by Z32 on March 9, 2011 70. Physics In a cathode ray tube, electrons initially at rest are accelerated by a uniform electric field of magnitude 4.71 x 105 N/C during the first 5.49 cm of the tube's length; then they move at essentially constant velocity another 47.9 cm before hitting the asked by jason on January 26, 2012 71. Politics I'm writing a speech, and it's about the topic "Private sector investment is preferable to public sector investment for Human Space Exploration" I'm on the con side for this argument, and one of my reasons was that public sector will spur cooperation, asked by Anna on September 18, 2011 72. Physics question mass 0.3kg is moving on the ground at speed 4m/s towards ball B which is at rest on the ground and has mass of 0.8kg. When A collides with B the ball remains in contact for 0.2 sec after the collision B moves forward with a velocity of 1.8m/s find the asked by Amy on January 10, 2018 73. English I need help bad, what exactly am I suppose to write about with this question. I just need to know what this question is asking. Here is the question: “Locate two books or internet sources on the career of Edgar Allen Poe. On the basis of information you asked by Anonymous on September 19, 2010 74. physics A cyclist is on a rolling stationary trainer pedaling such that his wheels are traveling at 30 km/h. He has an unfortunate incident and ends up falling over 90° on his side onto a large patch of ice. Given the cyclist and bicycle have an 4.5 kg*m^2, find asked by joe on June 30, 2016 75. Physics A centrifuge in a medical laboratory rotates at an angular speed of 3500 rpm (revolutions per minute). When switched off, it rotates 70.0 times before coming to rest. Find the constant angular acceleration of the centrifuge. (Assume the initial direction asked by Gina on October 14, 2010 76. Algebra 1 A finance company offers cheaper interest rates if you borrow a larger sum of money for shorter time period. A borrower is offered$7000 at 12% or $10080 at 10%. If the tome for the lager loan is 6 months less but the total interest is the total interest asked by Lola on November 9, 2010 77. statistics sing the proper average, find the average number of grams of fat per ounce of meat or fish that a person would consume over a 5-day period if he ate these: 3 oz fried shrimp 3.33 g/oz of fat 3 oz veal cutlet 3.00 g/oz of fat 2 oz roast beef 2.5 g/oz of fat asked by roga on February 18, 2013 78. algebra write an expression to represent each situation. then find the value of each expression to solve the problem. 1. on saturday, mrs. armor bought 7 pairs of socks for$3 each, and a sweater for her dog of $12. then she found a$5 bill on the sidewalk. over

asked by anon on August 28, 2015
79. Physics

A pendulum string has a length l = 4.0 ft. When the pendulum ball is released at 90 degrees to the vertical, it will swing down. A nail is located distance d below the point of suspension of the pendulum. Show that d must be at least 0.6l if the ball is to

asked by Nora on March 21, 2015
80. Physic- help on direction (Not that good at Englis

Galileo figured out the equation that describes the behavior of a pendulum. If you square both sides of the equation, you will find that the slope of the line is related to the acceleration due to gravity (g). Specifically, slope = 4PI^2/g. Use your data

asked by Tara on January 12, 2015
81. Calculus

A rectangle is bounded by the x-axis and the semicircle y= ã(25-x^2). What length and width should the rectangle have so that the area is maximum? Place the semi-circle so it's center coincides with the origin. If you go a distance x to the right the

asked by Tezuka on October 1, 2006
82. physics

A 16.0-m uniform ladder weighing 490 N rests against a frictionless wall. The ladder makes a 63.0° angle with the horizontal. (a) Find the horizontal and vertical forces the ground exerts on the base of the ladder when an 850-N firefighter has climbed

asked by mee on January 16, 2011
83. materials bahavior

A specimen has an initial diameter of 200mm and a length of 700mm. At a stress of 40MPa and a temperature of 538oC the steady state strain rate is about 2×10−4% per hour. Find the primary creep elongation and the steady state creep elongation after 5000

asked by lucas on December 7, 2015
84. Algebra 2 ..........

During a sale, a music store is selling all drum kits for 20% off. Preferred customers also receive an additional 15% off. 1. Write a composite function to represent the final cost of a kit that originally cost c dollars. 2. Find the cost of a drum kit

asked by Anonymous on February 19, 2013
85. Janine

You order fifteen burritos to go from a Mexican restaurant, eight with hot peppers and seven without. However, the restaurant forgot to label them. If you pick five burritos at random, find the probability of the given event. (Round your answer to three

asked by Janine on December 1, 2014
86. calc 3

The length script l, width w, and height h of a box change with time. At a certain instant the dimensions are script l = 7 m and w = h = 5 m, and script l and w are increasing at a rate of 6 m/s while h is decreasing at a rate of 4 m/s. At that instant

asked by Becky on September 21, 2012
87. Math

A consumer buys n light bulbs, each of which has a lifetime that has a mean of 800 hours, a standard deviation of 100 hours, and a normal distribution. A light bulb is replaced by another as soon as it burns out. Assuming independence of the lifetimes,

asked by Lo on April 27, 2011
88. physics

A baseball is thrown, leaving the baseball player’s hand 6.0 ft about the ground and at a 45 degree angle with respect to the horizon. The initial speed is 80 ft/s. Find the maximum height attained, the length of time the ball stays in the air, and the

asked by mary on December 10, 2008
89. physics

a certain type of propeller blade can be modeled as a thin uniform bar 2.5 m long and of mass 24 kg that is free to rotate about a frictionless axle perpendicular to the bar at its midpoint. if a technician strikes this blade witha mallet 1.15 m fromthe

asked by Anonymous on October 27, 2009
90. Chemistry

A certain Geiger counter is known to respond to only 1 of every 1000 radiation events from a sample. Calculate the activity of each radioactive source in curies, given the following data. 580 clicks in 104 s My text barely attempts to explain how to do

asked by Trixie on April 16, 2010
91. Art

I'm trying to find out what the differences and similarities are between: Impressionism Neoclassicism and Abstract Expressionism Examples of these arts are: The Emperor Napoleon in His Study at the Tuileries by Jacques Louis David (Impressionism) The

asked by Leah on April 10, 2010
92. Science: Physics and Chemistry

I was given a systems equation. Two masses are on a flat frictionless surface tied together. There is a pulley type thing and another mass is hanging over the edge of the table. It is attatched to the other 2 masses. It has no Fn, only Fg because it is

asked by Marina on February 8, 2010
93. English

Team 1, come to the front, please. Who plays the part of the king? Who performs the part of the old man? Who is the movie director? Where is the prop amster in this team? Have you prepared for the props for this play? put them against the blackboard or

asked by rfvv on November 24, 2017
94. Physics

A hanging wire made out of titanium with diameter 0.080 cm is initially 2.3 m long. When a 78 kg mass is hung from it, the wire stretches an amount 2.89 cm. A mole of titanium has a mass of 47.9 grams, and its density is 4.51 g/cm3. Based on these

asked by Amelie on February 25, 2011
95. Sampling Distribution Complete solutions and illus

Sampling Distribution Complete solutions and illustrations are required. 1.The average annual salary for all U.S. teachers is $29,863. Assume that the distribution is normal and the standard deviation is$5,200. a.Find the probability that a randomly

asked by Rhea on February 27, 2013
96. sorry but more research help

can you guys also give me websties on the process of committe investigations. i looked in goggle but they keep talking about ethics and all that. i swear, that before i ask for your help, i research for atleast 20 to half an hour on the internert to find

asked by dolphino on November 17, 2006
97. Chemistry. What equation do I use?

A 20.29 g sample of impure MgCO3 is completely decomposed at 1000oC in previously evacuated 2.0 L reaction vessel. After the reaction was complete the solid residue had a mass of 15.9 g. Assume that only MgCO3 could produce gas CO2 what percent of original

asked by Sarah on December 2, 2008
98. Math

Sarah has to go to her brother's baseball tournament that lasts for 4 days. She eats two-thirds of a hotdog at every game. He plays 2 games a day. Define your variables, write a function rule, find the domain and range, and tell whether the data is

asked by Lynn on October 2, 2016
99. Geoscience

can you help me write out a geological time scale of an area located within stone mountain Georgia? I need a description of the area, how the rock transformed and was dated, picture of a map that has the longitude and latitude of the area picked, the

asked by Robin on February 21, 2011
100. math pre calc

at the pittsburch zoo, children ride a train for 25 cents, adults pay $1 and seniors pay .75. on a given day, 1400 passengers paid a total of$740 for the rides. there were 250 more children riders than adults and senior riders combined.find the nu,ber of

asked by JT on April 25, 2013