Questions Asked on
March 28, 2011

  1. math

    what should you call a man with a clamp

    asked by lala
  2. Chemistry

    Suppose that 0.650 mol of methane, CH4(g), is reacted with 0.800 mol of fluorine, F2(g), forming CF4(g) and HF(g) as sole products. Assuming that the reaction occurs at constant pressure, how much heat is released? Substance & Enthalpy of Form. (kJ/mol)

    asked by Jenny
  3. chemistry

    how many oxygen atoms are in 0.25 mole of SO3 ?

    asked by shellywo
  4. physics

    An archer shoots an arrow toward a 300 g target that is sliding in her direction at a speed of 2.15 m/s on a smooth, slippery surface. The 22.5 g arrow is shot with a speed of 38.0 m/s and passes through the target, which is stopped by the impact. What is

    asked by Alexandria
  5. chemistry

    Consider the reaction HCl + NaOH ->NaCl + H2O Given: HCl Solution: 22 degrees celsius NaOH Solution: 22 degrees celsius Final Temperature: 26.1 degrees celsius A. Calculate the amount of heat evolved when 15 mL of 1.0 M HCl was mixed with 35 mL of 1.0 M

    asked by Vanessa
  6. algebra

    Theresa has $26 in her wallet. The bills are worth either $5 or $1. If there are 14 bills total, how many does she have of each type?

    asked by Anonymous
  7. Clothing and Textiles

    What are thedifferent methods of controlling fullness in a garment. Need pictures

    asked by Sonia
  8. Spanish

    i had to listen to an audio of these two poems and type them down. I did that part but I'm not sure of the accent marks of some words. If you can help me that would be great and also explain them to me more like do the meanings differ in the following

    asked by anon
  9. physics

    An object traveling 200 feet per second slows to 50 feet per second in 5 seconds. Calculate the acceleration of the object.

    asked by j
  10. English

    Need to label the verb wish A for action of L for Linking... 1. The koala bears have climbed the tree. Answer=A 2. The peacock seemed more beautiful than before. Answer=A 3. In the rain forest display at the zoo, the birds looked stange and exotic.

    asked by Ann
  11. geometry

    You are planning to use a ceramic tile design in your new bathroom. The tiles are blue and white equilateral triangles. You decide to arrange the blue tiles in a hexagonal shape as shown below. If the side of each tile measures 10 cm, what will be the

    asked by Ehrine
  12. Chemistry

    a. write the complete hydrolysis equation of NaC2H3O2 b. identify the spectator ions c. identify conjugate acid base pairs

    asked by Anonymous
  13. Physics

    A 300 g bird flying along at 6.2 m/s sees a 10 g insect heading straight toward it with a speed of 27 m/s (as measured by an observer on the ground, not by the bird). The bird opens its mouth wide and enjoys a nice lunch. What is the bird's speed

    asked by Sharon
  14. 30-60-90

    The shorter leg of a 30-60-90 triangle is 5.4 feet long. Find the perimeter

    asked by Ehrine
  15. college chem

    A 0.1276 g sample of a monoprotic acid (molar mass = 1.10 x 10^2) was dissolved in 25.0 ml of water and titrated with 0.0633 M NaOH. After 10.0 ml of base has been added, the pH=5.47. What is the Ka for the acid?

    asked by Angelina
  16. french 2

    -FRENCH 2- i am having a lot of trouble with l'imparfait et le passe compose-talking about actions in the past- and i need some tips on how to study.... anyone got suggestions? im open to anything. thank you very much! :)

    asked by kw
  17. Treacher girls scholl

    A hydrocarbon is burnt completely in air to form 13.2g of carbon dioxide gas and 7.2g of water. What is the molecular formula of the hydrocarbon?

    asked by Esh
  18. Literature

    Over the course of The Screwtape Letters, the state of the patient's soul fluctuates as he experiences a conversion, doubt, dangerous friendships, war, love, and finally, in death, oneness with God. What major strategies does Screwtape use to tempt the

    asked by Scott
  19. Gen Chem

    What are the net ionic equations for: 1. Potassium Fluoride and Ammonium Chloride and 2. Sodium Hydrogen Sulfite and Potassium Cyanide?

    asked by Ann
  20. math

    a hot-air balloon is seen in the sky simultaneously by two observers standing a t two different points on the ground. (the 2 people are facing each other and the balloon is in between them in the air.)they are 1.75 miles apart on level ground. The angles

    asked by lulu
  21. chemistry, please help!!

    The combusion of glucose produces carbon dioxide and water vapor according to the chemical equation below: C6H12O6 (s) + 6O2 (g) ---> 6CO2 (g) + 6H2O (g) DELTA H = -2540 kj Calculate the energ involved in making 75.0 g of glucose from carbon dioxide and

    asked by Rachel
  22. Chemistry

    When light having a wavelength of 497 nm strikes a metal coating of an emitter, an elector with kinetic energy of 2.52 x 10^-19 is ejected. What is the threshold frequency for this metal?

    asked by Kamila
  23. Calculus

    A spherical balloon is being inflated at a rate of 10 cubic inches per second. How fast is the radius of the balloon increasing when the surface area of the balloon is 2pi square inches? Enter your answer correct to 3 decimal places.

    asked by Anonymous
  24. physics

    the force that charge qA exerts on charge qB is ___ the force that charge qB exerts on charge qA. opposite and equal to opposite and greater than opposite and less than the same as

    asked by anonymous
  25. Calculus

    An open-topped cylindrical pot is to have volume 125 cm3. Determine the minimum possible amount of material used in making this pot? Neglect the thickness of the material as well as possible wastage. Give your answer accurate to 2 decimal places.

    asked by Anonymous
  26. social studies

    I need a poem about the battle of lexington and concord.

    asked by karen
  27. Chemistry

    A gas expands from 282 mL to 971 mL at constant temperature.Calculate the work done (in joules) by the gas if it expands against a constant pressure of 6.00 atm.

    asked by Kiana
  28. chemistry

    Balanced equation: 2HCL+CaCO2>CaCl2+CO2+H2O what volume of 6.00 M HCL is needed to completely react with .750 moles of CaCO3

    asked by patti
  29. 4th grade math

    teacher divided students into groups of 3. each group of 3 wrote a report the had 9 pictures in it. the students used 585 pictures all together. how many students were there in all?

    asked by Anonymous
  30. Physics (dynamics)

    While standing on a horizontal frictionless surface, a 50 kg student pushes against a wall with an average force of 125 N east for 0.110 s. Calculate the velocity of this student at 0.110 s

    asked by Anonymous
  31. physics

    A steel ball of mass 0.300 kg is fastened to a cord that is 70.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal. At the bottom of its path, the ball strikes a 2.50 kg steel block initially at rest on a frictionless

    asked by Taylor
  32. physics (3 seperate questions)

    1. A small fly of mass 0.26 g is caught in a spider's web. The web vibrates predominately with a frequency of 4.2 Hz. Find the effective spring stiffness constant k for the web. Hint: use natural frequency of oscillations formula. N/m 2. At what frequency

    asked by Anonymous
  33. physics

    A 1500 kg car moving at 10 m/s is stopped by the action of its brakes. The work done by the car's brakes is ____ Joules.

    asked by bode
  34. geometry

    A cable 22 feet long runs from the top of a utility pole to a point on the ground 15 feet from the base of the pole. How tall is the utility pole? - thanks!

    asked by christina
  35. statistics

    The participants in a weight-loss class lost the following weights (in pounds) after three weeks of dieting:3,6,0,3,0,0 Assuming that these weights constitute an entire population, find the standard deviation of the population. Round your answer to at

    asked by roy
  36. math

    Formulate a system of equations for the situation below and solve. A theater has a seating capacity of 660 and charges $2 for children, $4 for students, and $6 for adults. At a certain screening with full attendance, there were half as many adults as

    asked by Leah
  37. Physics

    According to conservation of momentum, when two objects collide, the momentum lost by one object equals the momentum gained by the other. Give a common-sense, non-mathematical explanation of the connection between Newton’s 3rd law and momentum

    asked by Tammy
  38. Stats

    How many different simple random sample of size 8 can be obtained from a population whose size os 42?

    asked by Brooke
  39. math

    In the following figure, AF is the perpendicular-bisector of BD, AD = 15, and DF = 13. Find AB + BF

    asked by BreAnna
  40. physics

    You are the technical consultant for an action-adventure film in which a stunt calls for the hero to drop off a 18-m-tall building and land on the ground safely at a final vertical speed of 5 m/s. At the edge of the building's roof, there is a 100-kg drum

    asked by laila
  41. PHYSICS

    A nuclear reactor contains nuclei that fission when bombarded by slow neutrons. The fission reaction produces fast neutrons which need to be moderated (i.e. slowed down) in collisions before they can cause further fissions. In this problem we consider a

    asked by Megan
  42. chemistry

    1. the solubility of AgCl in water is 3.97x10^-6 at 0*C and 1.91X10^-4 at 100*C. calculate Ksp for AgCl at each temp. 2. using the data from #1 and the clausius- Clapeyron equation, calculate deltaH* and deltaS* for the formation of a saturated solution of

    asked by anonymous
  43. math

    what is the elapsed time between 5:12am and6:05pm?

    asked by daniyal
  44. Physics - Doppler Effect

    The siren in an ambulance has a frequency (according to you) of 1100 hz as it moves towards you at a speed v. It then makes a u-turn and travels away from you with a speed v, and you hear a frequency of 950 hz. What is the final speed v of the siren?

    asked by J Velji
  45. Chemistry

    Sodium vapor lamps, used for public lighting, emit yellow light of wavelength 589 nm. How much energy is emitted by 5.00 mg of sodium atom emitting light at this wavelength?

    asked by Kamila
  46. Geometry

    find the circumference of the figure, Give both the exact value and an approximation to the nearest hundredth. Circle 6.6km I am just learning this and a teacher is using inches but the textbook has metrics and I never learned the metric system Please

    asked by Jeannie
  47. 30-60-90 triangle

    The hypotenuse of a 30-60-90 triangle is 10. Find the perimeter. How do i do that?

    asked by Jesse
  48. chemistry

    Consider the titration of 88.0 mL of 0.150 M Ba(OH)2 by 0.600 M HCl. Calculate the pH of the resulting solution after the following volumes of HCl have been added. 0.0 ml 12 ml 31 ml 44 ml 88 ml

    asked by Sarah
  49. physics

    Three identical stars of mass M = 6.4 x 1030 kg form an equilateral triangle that rotates around the triangle's center as the stars move in a common circle about that center. The triangle has edge length L = 5.0 x 1010 m. What is the speed of the stars?

    asked by jr
  50. Reading Comp.

    A blanket of thick fog covered the area Visibility there was almost zero How are the two related? a. The two sentences establish a comparison b. The second sentence contradicts the first c. The first sentence explains the meaning of visibility d. The

    asked by Arlynn
  51. OMT101

    Find variance and standard deviation for the data 35,45,30,35,40,25

    asked by Yogesh
  52. physics

    A 1500 kg car moving at 10 m/s is stopped by the action of its brakes. The work done by the car's brakes is ____ Joules.

    asked by aaron
  53. Calculus

    Find the length of the intercepted arc with radius 2.5 cm and a central angle of 95 degrees

    asked by Bree
  54. chemistry

    if .55 grams of a gas dissolves in 1 liter of water at 20 kPa of pressure, how much will dissolve at 110 Kpa of pressure?

    asked by Anonymous
  55. Chemistry

    determine the redox reaction represented by the following cell notation Mg Mg2 Cu2 Cu

    asked by Natalie
  56. Math

    Sketch the graph of a function f that satisfies all the following conditions. (a) f(0)=0,f'=1 (b) f''(x)>0 for x

    asked by Tina
  57. math

    There are 25 red, blue, yellow and green marbles in a bag. Four of the marbles are blue and the probability of selecting a blue or green marble at random is 40%. Write and solve an equation to determine the number of green marbles in the bag

    asked by maymay
  58. Physics

    An inexperienced catcher catches a 128 km/h fastball of mass 134 g within 1.01 ms, whereas an experienced catcher slightly retracts his hand during the catch, extending the stopping time to 10.1 ms. What is the average force imparted to the two gloved

    asked by Mallory
  59. physics

    A meterstick is at rest in an inertial frame S2.If S2 moves with a speed of 0.8 c with respect to a rest frame S1, find the length of the meterstick as measured in frame S1 according to classical physics. Answer in units of m.

    asked by kay
  60. geometry

    Two sides of a triangle measure 4 inches and 9 inches. Determine which cannot be the perimeter of the triangle. A.19 inches, B.21 inches, C.28 inches, D.26 inches

    asked by mel
  61. trig

    In a circle of radius 12 inches, a sector is formed by a central angle of pie/4 radians. Find the area of the sector to the nearest hundredth of a square inch.

    asked by Lisa
  62. physics

    An unstable atomic nucleus of mass 17.0 ¡Ñ 10¡V27 kg which is at rest disintegrates into three particles. One of the particles, of mass 5.00 ¡Ñ 10¡V27 kg, moves in the y direction with speed 4.50 Mm/s. Another, with mass 8.40 ¡Ñ 10¡V27 kg, moves

    asked by Matthew
  63. math

    The number 1 is a perfect square and a perfict cube. What is the next smallest whole number which is a perfect square and a perfect cube?

    asked by johnny
  64. physics

    A small fly of mass 0.26 g is caught in a spider's web. The web vibrates predominately with a frequency of 4.2 Hz. Find the effective spring stiffness constant k for the web. Hint: use natural frequency of oscillations formula. N/m

    asked by Anonymous
  65. Chemistry

    What is the energy and wavelength of a photon with a frequency of 91.5 MHz?

    asked by Kamila
  66. physics

    determine the kinetic energy of falling by an average of one degree of freedom of the nitrogen molecule at temperature T = 1000 K, as well as the kinetic energy of rotational motion.

    asked by lisa
  67. geometry

    if the area of triangle QRS is 38 sq cm, what is the area of QRST?

    asked by Terry
  68. math

    a hot-air balloon is seen in the sky simultaneously by two observers standing a t two different points on the ground. (the 2 people are facing each other and the balloon is in between them in the air.)they are 1.75 miles apart on level ground. The angles

    asked by lulu
  69. physics

    The four wires that lie at the corners of a square of side a= 5.60 cm are carrying equal currents i= 1.80 A into (+) or out of (-) the page, as shown in the picture. Calculate the x-component of the force on a 1.0-cm long piece of the lower right-hand

    asked by Matt
  70. language arts

    my mom went to the grocery store. she forgot her purse... a)comma B)and c)or d)but e)because

    asked by vincent
  71. Chemistry

    a solution is made by combining 5 mL of .2M HC2H3O2, 5 mL of .2M NaC2H3O2, and 10 ml of water. calculate the molarity of HC2H3O2 and of NaC2H3O2 in this new solution

    asked by Anonymous
  72. chemistry

    what would happen to the volume of the 100-L weather balloon if its temperature increases from 25 degrees Celsius to 125 degrees Celsius while the external pressure remains constant? Again, there are no leaks in the balloon.

    asked by jacques shaw
  73. Calculus

    A ball is thrown upward with an initial velocity of 96 feet per second from the top of a 100 foot building. (a) When well the ball attain its maximum height? (b) When will the ball hit the ground? Give a decimal answers correct to 2 decimal places.

    asked by Anonymous
  74. physics

    if a negatively charged rod is brought near a negatively charged electroscope, there will be no effect the leaves will fall the leaves will spread farther apart the electroscopw will become positively charge

    asked by kriti
  75. pre calculus

    1. a plane has heading of 54 degrees & airspeed of 225mph. The wind is blowing at 33mph from 144 degrees. what are its actua heading & airspeed? Round to one decimal place. A) 61.4deg, 257.1mph B) 7.4deg, 66114.0mph C) 136.6deg, 288mph D) no solution

    asked by zooey
  76. stats

    A sample of 12 observations is selected from a normal population for which the population standard deviation is known to be 4. The sample mean is 19. (Round your answers to 3 decimal places.) (a) The standard error of the mean is The 90 percent confidence

    asked by liam
  77. Pre-Algebra 7th Grade

    I need help with this problem: Suppose you design a second model car that is 1/4 the size of the model car you designed in Excercise 9.What is the perimeter of the license plate on the second model car? Let me explain.The perimeter of the actual car's

    asked by Jorge
  78. Discrete Math

    An arithmetic sequence begins, 116, 109, 102 Find the 300th term of this sequence.

    asked by Francesca
  79. Algebra 2

    The frequency of a radio wave is inversely proportional to the wavelength. If a wave 250 m long has a frequency of about 1200 kHz, what is the approximate length of a wave with a frequency of 800 kHz? A. 167 m B. 258 m C. 325 m D. 375 m

    asked by Lauren
  80. Chemistry

    The distance between the first and fourth crest of water is 10.9 m. A crest appears every 0.435 minutes, at a point along the wave. What is the speed (m/s) of the water waves?

    asked by Kamila
  81. physics (3 separate questions)

    1. The motion of a body is described by the equation ay = −308y. (a) Find the angular frequency. (b) Find the frequency. (c) Find the period. 2. A 2.10 kg mass attached to a spring oscillates with a period of 0.395 s and an amplitude of 20.5 cm. (a) Find

    asked by Anonymous
  82. Chemistry

    The density of a gas containing chlorine and oxygen has a density of 2.875 g/L at 754.5 mm Hg and 11(degress C). What is the most likely molecular formula of the gas?

    asked by Toni Jones
  83. icp

    you wreck a car travveling at 88 m/sec and decelerate at -200/s2 how far will the car crumble in at you.

    asked by rich
  84. math

    find the missing dimension of each triangle height=17 area=51 what is the base please help!!

    asked by osdrian
  85. math

    Dana buys a piece of carpet that measures 20 square yards. Will she be able to completely cover a rectangular floor that measures 12 ft 6 in. by 16 ft 6 in.?

    asked by Tristan
  86. algebra 2

    Guy wire. How long is a guy wire reaching from the top of a 24ft pole to a point on the ground 16 ft from the pole? Thank you.

    asked by esther
  87. math

    Assume that the sides of triangles are limited to whole-number measures. How many different triangles have a perimeter of 12 meters? Explain how you determined this.

    asked by JV
  88. Physics

    A radioactive nucleus is at rest when it spontaneously decays by emitting an electron and neutrino (as shown in the figure below ). The momentum of the electron is 8.11 x 10−19 kg·m/s and it is directed at right angles to that of the neutrino. The

    asked by Tom
  89. chemistry

    Investigating changes in colligative properties involves the measurement of a solution’s concentration in molality instead of molarity because of which of the following? the mass of the solvent does not change, but its volume does change, as temperature

    asked by Annie
  90. Chemistry HELP! IMLOST

    The density of a gas containing chlorine and oxygen has a density of 2.875 g/L at 754.5 mm Hg and 11(degress C). What is the most likely molecular formula of the gas?

    asked by Toni Jones
  91. math

    In 1991, the separation between goalpost uprights in college football changed from 23 feet 4 inches to 18 feet 6 inches. What percent reduction was this? (accurate to tenths)

    asked by lucky
  92. algebra 2

    Guy wire. How long is a guy wire reaching from the top of a 21ft pole to a point on the ground 14 ft from the pole? Thank you.

    asked by esther
  93. Algebra II-Please check my calculation

    Find center, vertices, co-vertices and foci for the following; (x-3(^2/49 + (y-4)^2/4 = 1 Center would be (3,4) A=7 b=2 Vertices would be found this way: (h+-a,k) (3-7,4) (3+7,4) Vertices = (-4,4) (10,4) Co-vertices (h,k+-b) (3,4-2) (3,4+2)

    asked by Sheila
  94. Math

    Find x, the angle of depression (measured in degrees) from the top of a lighthouse that is 173 ft above water level to the waterline of a ship 4835 ft off shore. Round your answer to the nearest hundredth of a degree.

    asked by Maria
  95. Physiology

    Parathyroid hormone and calcitonin are synthesized where?

    asked by Ivy
  96. Physics

    what is the kinetic energy in joules of a 1040-kg automobile traveling at 81 km/h ?

    asked by Adrienne
  97. English

    1. Please water the plants while I am away. 2. Please water the plants while I am absent. 3. Please water the plants in my absence. 4.Please water the plants while I am not here. 5. Please water the plants while I am out. 6. Please water the plants while I

    asked by rfvv
  98. chemistry

    In the chemical expression, 5 C2H4 : There are __________ molecules of Ethene represented which contain a total of _______ atoms of Hydrogen. Please give both answers in number form with a comma between numbers.

    asked by Anonymous
  99. Math

    The 16th term of an Arithmetric Progression is four times the 36th term, and exceeds it by 32. Finda the numbers.

    asked by Ivy
  100. physics

    A mass of 0.246 kg is converted completely into energy of other forms. How much energy of other forms is produced? The speed of light is 2.99792 × 108 m/s. Answer in units of J.

    asked by kay
  101. english 10

    Every sentence in the paragraph below violates some principle of good persuasive writing. Revise the paragraph, following the directions at the end of each sentence; use your imagination where necessary. Type the revised paragraph in the text box provided

    asked by Joven
  102. Chemistry Molarity

    What is the concentration, in units of molarity, of a 500mL solution containing 0.750 moles of sodium chloride in water?

    asked by Toni Jones
  103. health care?business

    I am doing a paper on not for profit and for profit health care organizations and i am confused I know for profit is to make money and not for profit has more of the charity help but when i do a search i always get non-for profit so is for-profit

    asked by april
  104. Environmental Science

    In the United States we are fortunate to have an abundant supply of food, and much of this is due to our agricultural technology. However, there are many concerns about our food source including genetically modified crops, the use of more chemicals, and

    asked by Anonymous
  105. physics

    A hunk of cast concrete with a weight of 10 N will float if it displaces 10 N of water. True or False

    asked by aaron
  106. math could anyone help me plz?:[

    you have a $5841 credit card debt, and you plan to pay it off through monthly payments of $71. if you are being charged 14% interest per year, how long will it take you to repay your debt?

    asked by ash
  107. Chemistry

    Calculate the concentration of H3O+ that contains 5.5 x 10 ^-5 moles/L OH- at 25 degrees

    asked by Natalie
  108. physics

    A 68.0 kg person throws a 0.0450 kg snowball forward with a ground speed of 27.0 m/s. A second person, with a mass of 58.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.50 m/s, and the

    asked by Alexandria
  109. Stats.

    An obstetrician maintains that preterm babies (gestation less than 37 weeks) have a higher variability of birth weight than do full-term babies (gestation 37-41 weeks). According to the National Vital Statistics Report, Vol. 48, No. 3, the birth weights of

    asked by Rob
  110. chemistry

    A plot of ln k vs. 1/T for the reaction gave a line with a slope - 3250 kelvin determind the energy of activation?

    asked by dea
  111. Math

    There are 7 green cas. Predict the number of of green cars you would expect to see if there were 125 cars in the parking lot.

    asked by DeeBie
  112. Psy202

    identify the 3 domains of development, why it is important to consider each domain in the study of adult development, and an example of how one domain of development impacts the other two.

    asked by Anonymous
  113. Calculus

    A ball is thrown upward with an initial velocity of 96 feet per second from the top of a 100 foot building. (a) When will the ball attain its maximum height? (b) When will the ball hit the ground? Give a decimal answers correct to 2 decimal places.

    asked by Anonymous
  114. English

    What is the adverb in these sentences? I got the answer, but can you check? In the past, scientists did not have much information about certain animals. Adverbs: Past, much With modern technology that has already changed. Adverbs: modern, already A cat

    asked by Kayla
  115. math

    Calculate the volume of the cone with a = 18 and b = 11. Round answer to the nearest tenth. Use 3.14 for pi

    asked by BreAnna
  116. What is the meaning?

    I don't understand this quote "There are decades where nothing happensl and there are weeks where decades happen."?????

    asked by Indiana
  117. physics

    The total energy of a 2.00 kg falling rock is 5000 J. If its potential energy is 1975 J, the kinetic energy of the rock is ____ J. The speed of the rock is ___ m/s

    asked by courtney
  118. College Chem

    What is the pH at the equivalence point in the titration of 0.250 M HX (Ka = 5.2 x 10^-6) with 0.250 M KOH?

    asked by Angelina
  119. physics

    Zero, a hypothetical planet, has a mass of 5.7 x 1023 kg, a radius of 2.8 x 106 m, and no atmosphere. A 10 kg space probe is to be launched vertically from its surface. (a) If the probe is launched with an initial kinetic energy of 5.0 x 107 J, what will

    asked by jr
  120. English

    Can you please check if everything is all right in these sentences I wrote on the second world war. Thank you. 1) On the 1st of September 1939 the Germans invaded Poland; on the 3rd of September the Western Powers (France and England) declared war on

    asked by Mike
  121. chemistry

    Balanced equation: 2HCL+CaCO2>CaCl2+CO2+H2O what volume of 6.00 M HCL is needed to completely react with .750 moles of CaCO3

    asked by patti
  122. PHYSICS

    In a laboratory experiment, a bullet of mass 47.0 g is shot horizontally into a stationary block of totara of mass 3.50 kg that hangs from a light string. The bullet is then embedded a distance d = 3.50 cm into the block and the combined block-bullet

    asked by Gary
  123. Science

    how many atoms of carbon in 18 grams of C3H8o

    asked by Sylvia
  124. Physics

    A sled of mass 5.98 kg is coasting along on a frictionless ice-covered lake at a constant speed of 1.42 m/s. A 1.98-kg book is dropped vertically onto the sled. At what speed does the sled move once the book is on it?

    asked by Mary
  125. science - magma

    Magmas which have different chemical compositions have different temperatures i.e basaltic magmas erupt at about 1200 °C whereas rhyolitic magmas erupt at about 700 °C. what is the difference in chemical composition between these two? also why can the

    asked by rebecca niles
  126. Math

    How much money has to be invested at 4.3% compounded continously to have $19,000 after 16 years

    asked by Danny
  127. Algebra

    The area of a playground is 221 yd^2. The width of the playground is 4 yd longer than its length. Find the length and width of the playground.

    asked by ismackyourfacewithabanana!
  128. Calculus

    Using L'Hopital's Rule, find the limit: lim x->0+ (as x approaches 0 from the right) of sinx/x^(1/3)

    asked by Justin
  129. Math

    A rope 3/4 yard long is cut into 9 pieces. Each piece is the same length. how long is each piece?

    asked by Chris
  130. Chemistry

    A laser produced a light of wavelenth 575 nm. How many photons of this light would have to strike a material for the material to absorb 55.1 kJ?

    asked by Kamila
  131. math !!!! :O

    Daniel gave 4/5 of his stickers to Javier. Javier’s collection of stickers increased to 64. If Javier had 28 stickers in the beginning, how many stickers did Daniel have in the beginning?

    asked by Katherine
  132. Mcdonalds

    What company is related to mcdonalds?

    asked by Lisa
  133. math

    Please Help!! The mean weight of 75 2nd graders is 55.7 lbs and the mean weight of 25 1st graders is 42.6 lb. What is the mean weight of the 100 children

    asked by luce
  134. math

    Pivot the system about the element in row 2, column 1. –5 5 –7 10 4 4

    asked by Leah
  135. math

    A team has twelve 15-year-old players and eight 16-year-old players. The coach of the team is 43 years old. Which measure of central tendency best represents the ages of the team, including the coah, and why? A: Mean, because it is not affected by the age

    asked by Jammin
  136. chemistry

    if the pressure on a 100-L weather balloon changes from 1.0 atom to 2.0atom, what would be the volume of the balloon at the higher pressure? Assume the temperature does not changes and the balloon has no leaks. what is the volume = to

    asked by jacques shaw
  137. chemistry

    How many grams are required to make 1.5 L of 3.0 M hydrochloric acid (HCl) solution?

    asked by ELLE
  138. algebra

    Solve the following equation for p. Show all of your work. r = 4q - 5p over 9

    asked by kay
  139. algebra 2

    Guy wire. How long is a guy wire reaching from the top of a 24ft pole to a point on the ground 16 ft from the pole? Thank you.

    asked by Esther
  140. earth science

    what is the tectonic setting of seattle washington?

    asked by will
  141. Literature

    In discussing time, change, and pleasure, Screwtape asserts that "just as we pick out and exaggerate the pleasure of eating to produce gluttony, so we pick out this natural pleasantness of change and twist it into a demand for absolute novelty". Why is the

    asked by Scott
  142. calc b

    lINEAR APPROXIMATION; find a linearization at a suitably chosen interger near X at which the given function and its derivative are easy to evaluate; f(x)=1+X x=8.1

    asked by steve
  143. accounting

    Assume that the following transactions affected owners' equity for De Soto Inc. during 2011. Feb. 1- Sold 40,000 shares of common stock in the market. Apr. 1- Purchased 3,000 shares of common stock to be held as treasury stock. Paid cash dividends of $0.50

    asked by ibrahim
  144. Jenny - earth-geology

    I removed your original post because you included your full name and your town. That's too much personal information for a public forum. Here's your question: Hey there, can anyone help with this question:-Mineral amphibole is composed of double chains of

    asked by Ms. Sue
  145. math

    what is the height of a triangle that the base is 16m and an area of 64m

    asked by osdrian
  146. Chemistry

    In a hydrogen atom, form what energy level must an electron fall to the n=3 level to give a line at 1.28 micrometers (um) in the infrared region?

    asked by Kamila
  147. equation

    what is the equation of calculating 5/90 lottery winning numbers if these numbers were selected for the first week 24-13-6-60-70

    asked by patrick
  148. English

    I forgot two include these two very last sentences. Thank you. 1) You can write either on the photocopy or on the fool-scap paper (I don't know if it is correct) 2)Present the character of the prioress, pointing out her appearance, her attitude towards her

    asked by Mike
  149. PRE CALC! HELP

    1. a plane has heading of 54 degrees & airspeed of 225mph. The wind is blowing at 33mph from 144 degrees. what are its actua heading & airspeed? Round to one decimal place. A) 61.4deg, 257.1mph B) 7.4deg, 66114.0mph C) 136.6deg, 288mph D) no solution 2.

    asked by elena
  150. Physics

    While standing on a frictionless ice surface, a 50 kg skater pushes against a wall with an average force of 150 N west for 0.210 s. Calculate the velocity of the skater at 0.210 s. This was what i did: m = 50 kg Fnet = 150 N t = 0.210 s Vf =? Fnet = ma

    asked by bram
  151. Reading Comp.

    The modern hearing aid is, essentially, a miniature public-address system, which converts sound into electrical energy and then converts it back to sound again. A hearing aid can increase the sound level by sixty decibels or more, but it also distorts the

    asked by Arlynn
  152. physics

    At what frequency would you expect the web to vibrate if an insect of mass 0.52 g were trapped? Hint: use stiffness constant found in part 1. Hint: after the insect is trapped, the mass of the oscillator has increases by insect's mass, so the mass in the

    asked by Anonymous
  153. math

    triangle a and b are similar the ratio of a side of triangle b to a corresponding sid of triagle a is 5.3 the lengths of the sides of triangle a a are 18ft, 27ft and 30ft find the perimeter of triangle b

    asked by michael
  154. physics

    A car can go from 0 to 85 km/h in 10 s. If the engine delivered twice the power, how many seconds would it take?

    asked by Elle
  155. chemistry

    how much energy is given off when 2.00 mol of CH4 are burned?

    asked by nancy
  156. Math

    Which expression represents the larger number? A. 40.1 x 10 to the -6 power B. 4.1 x 10 to the -7 power C. 0.411 x 10 to the -6 power D. 0.04001 x 10 to the -5 power I got A, but I'm not quite sure if it's the right answer :/

    asked by Melanie
  157. physics

    The load across a 12 V battery consists of a series combination of three resistors 21 ohm, 22 ohm, and 56 ohm. What is the total resistance of the load?

    asked by maria
  158. Science

    Compare an astronauts weight in orbit with the astronauts weight on Earth, assuming the mass of the astronaut doesn't change.

    asked by Janice
  159. Spanish

    The peoms are written that way I'm just not sure of the accent marks of some words. If you can help me,that would be great and also explain the accent marks more. that would help me in future. Thanks! First poem No sé qué te diera, por una mirada… un

    asked by anon
  160. Science

    Why are ecosystems important to the survival of humans?

    asked by Anonymous
  161. algebra

    find the positive value of x, to the nearest hundredth, that satisfies the equation 1 over x= x+2 over 2x+3

    asked by Mike
  162. chemistry - help

    0.3g of clotrimazole (C22H17ClN2) was dissolved in 80ml of anhydrous acetic acid. This was titrated with 0.1M perchloric acid using 0.3ml of naphtholbenzein as indicator until the colour changes from brownish-yellow to green. 1ml of 0.1M perchloric acid is

    asked by candy
  163. Interest Rates

    Homer won a prize in the lottery of $1000, payable $500 immediately and $500 plus 4% simple interest payable in 250 days. Getting impatient, Homer sells the promissory note to Moe for $450 cash after 130 days. Using a nominal 360 day year, find the simple

    asked by Melissa
  164. PHYSICS

    A submarine has run into trouble and is stuck at the bottom of the ocean. Several people are on board and must make their way to the surface without any diving gear. The air pressure aboard the submarine is 3.04 atm. The air temperature inside the

    asked by Sam
  165. chemistry

    In a mixture of ammonia an chlorine with excess ammonia what is the product

    asked by kennedy
  166. math

    Rachel cannot remember how much money she had when she came to school this morning. She used half of the money for lunch and then spent half of what was left to buy paper. If she now has #1.35, how much money did Rachel begin with?

    asked by johnny
  167. Chemistry

    What is undergoing oxidation in the redox reaction represented by Fe Fe3+ Cl2 Cl- Pt

    asked by Natalie
  168. Physics

    Specifically, which of the following best expresses your view: i. Many physics concepts make a lot of sense and connect to everyday experience; but formulas are more of a problem-solving tool than a sense-making tool. ii. It really depends on the formula.

    asked by Tammy
  169. physics

    A spring scale being used to measure the weight of an object reads 12.8 N when it is used on earth. The spring stretches 4.95 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1/6g. Find the reading of the

    asked by Anonymous
  170. Pre Calculus

    Given Triange ABC with an area of 100.2 a = 32.5 c = 29.2 Find angle B, expressed in degrees.

    asked by Brent
  171. english

    What opinion might they have of the author? What could you as a writer do to prevent this problem?

    asked by richard
  172. Math

    A company contributes $170 per month into a retirement fund paying 4.20% compounded monthly and employees are permitted to invest up to $ 2,800 per year into another retirement fund which pays 4.20% compounded annually. How large can the combined

    asked by Megan
  173. Math

    I need help.I'm in 5th grade.The question is:12 less than the product of 5 and a number equals 8.What is the unknown number?Plz help

    asked by Sydney
  174. Chemistry

    When someone buys fish at the fresh fish market, they should smell the fish to test for freshness, the less “fishy” the smell the fresher the fish. I am supposed to explain the source and chemistry, including reactions, structures, and names of the

    asked by Sammy
  175. Math

    The mean weight of 75 2nd graders is 55.7 lbs and the mean weight of 25 1st graders is 42.6 lb. What is the mean weight of the 100 children

    asked by Mai
  176. geometry

    Calculate the volume of the figure shown. a = 8 and b = 12. Use 3.14 for pi and round answer to the nearest tenth

    asked by BreAnna
  177. math

    What is the degree of the 3rd angle if the other two are 68 degrees?

    asked by j
  178. math

    what is the probability of selecting 5 from 90 numbers if these were selected first and had been added to it again 13-60-6-24-72

    asked by patrick adjei
  179. Math

    How many 9" squares are there in a 8' x 10' area?

    asked by Donna
  180. math

    given that a+b/5 = b+c/6 = c+a/7 = k, find the ratio a:b:c.

    asked by ivy
  181. Essay- Added a bit more

    Im doing an essay and this is the format for it. Intro of 5 or more sentences, where you introduce your thesis statement (that which you will be writing about - in the form of a statement, or point of view) Two or three paragraphs, of about 8-10 sentences

    asked by Sara
  182. English

    Can you please check these sentences for me? Thank you very much in advance. 1)Each group has to interview an American host student for ten minutes and then report about him/her to the whole class (also: present him o her to the whole class). 2)

    asked by Mike
  183. English

    I forgot to add these very last sentences. Thank you very much for all! 1) I last felt sorry when my best friend lost his father in a car accident. 2) I last felt sorry for a friend of mine, whose father was run over by a lorry while crossing the road. 2)

    asked by Mike
  184. Physics

    A tennis ball of mass 0.0609 kg is served. It strikes the ground with a velocity of 52.5 m/s (117 mi/h) at an angle of 22.0° below the horizontal. Just after the bounce it is moving at 50.5 m/s at an angle of 17.7° above the horizontal. If the

    asked by Rob
  185. English

    I am writing an argumentative essay on Why I think America should not have to accommodate the languages of immigrants that come to America that they should learn English before being eligible to become a US citizen.

    asked by Lisa
  186. Physics

    A submarine has run into trouble and is stuck at the bottom of the ocean. Several people are on board and must make their way to the surface without any diving gear. The air pressure aboard the submarine is 3.29 atm. air temperature inside the submarine is

    asked by Sam
  187. algebra 2

    Darla is building a new desk. To make sure she had made a square corner, she measures 4ft. from the corner along one edge and 6ft. from the corner along the other edge. How long (in feet) should the diagonal be between those two points if the corner is a

    asked by Esther
  188. Managerial Accounting

    The questions in this exercise are based on JetBlue Airways Corporation. To answer the questions, you will need to download JetBlue’s 10-K/A for the year ended December 31, 2004 (10K/A with a filing date of March 8, 2005). You do not need to print the

    asked by Angel
  189. math

    Samantha has an average of 92% on tree math test. If one of her grades was 84% and the other is 93%, what was the grade of her third test?

    asked by Lois
  190. Enviornmental Science 104

    GIS Identified Environmental Constraints It is because of regulations that environmental consulting companies in New Jersey are in such high demand, as it is a lengthy process to apply for a permit of any kind. My questions are: Do you think that by

    asked by Mack D.
  191. physics

    what's the resulting acceleration when unbalanced force of 98N applied to a 5.1 kg object?

    asked by nofa
  192. psychology

    what are the basic concepts of human interaction from a psychology perspective. In your examination, describe at least two examples of how human behavior changes based on social situations

    asked by jazz
  193. math

    What is the value of $6,440.00 at 10% interest rate in 19 months?

    asked by Theresa
  194. Calculus B

    The Antiderivative of: (2x+3)/((x^3)+3x) This one is devinately integration by partial fractions but im not sure what i am doing wrong. PLEASE HELP.

    asked by Brandon
  195. statistics

    A resher ranoumly selects and intreviews 10 male and 100 female college teacher. type of sampling technique?

    asked by Mary
  196. math

    what is 320/380 (or in fraction term) in lowest terms? and what is 54 over 126 in lowest terms?

    asked by tiana
  197. math

    how is the speed of a falling object determined.

    asked by don
  198. geometry

    The length of a rectangular garden is two feet less than five times the width. If the perimeter is 72 feet, what is the length of the garden?

    asked by Anonymous
  199. English

    These are the very last sentences of the day. Thank you very much for your help. 1) I know I'll miss working with you. She is going to change job. 2) She suggested going to the cinema rather than to the theatre. Do you remember seeing that man before? 3)

    asked by Mike
  200. chemistry

    How many grams are required to make 1.5 L of 3.0 M hydrochloric acid (HCl) solution?

    asked by ELLE
  201. Math

    How much did you invest each month at 6.60% compounded monthly if 25 years later the investment is worth 228190.50?

    asked by Jordan
  202. math

    can someone help explain how to do this? allen has nickels dimes and quarters in his pocket. the number of nickels is 1 more than twice the number of quarters. the number of dimes is 1 less than the number of quarters. if the value of change in his pocket

    asked by Robbie
  203. math

    how to write 28th march 2011 in 5 letters without using number

    asked by yatish
  204. Math

    Ms Sue i did not understand ".65 *0=" How about 14% of 56?

    asked by deb
  205. Math

    Find the standard deviation for the given data. Round your answer to one or more decimal places than the original data. 3){15,13,31,42,58,78} A)534.3 B)23.1 C)36.5 D)39.5

    asked by anonymous
  206. To Ms. Sue

    Ms. Sue could you please read my essay and tell me if it's good? I don't have time to rewrite it, would just like to know your opinion about it.

    asked by Sara
  207. aims math<<<<need some one to check my answer

    okay this problem is simple... well my answer im unsure the answers i get arent an option. the problem is: 37-3[5+4(3-7)]

    asked by angiie
  208. please help me or take a look

    37-3[5+4(3-7)] this problem is getting me frustrated because the answer come up with is not an option. i come up with -1224. 145,70,28,and 4

    asked by angiie
  209. english

    I am doing something called "Mystery word match". you have to combine all three words to make another word. renovate activity motion Bones do_ _ _ _ _ _ _ _ (8 letters)

    asked by Alex
  210. chemistry

    the rate constant for the reaction is 0.152 s_-1 at 27 degree the rate constant increases to 0.304 s _-1 at 37 degree what is the value of energy of activiation for the reaction?

    asked by dea
  211. english

    How can I condense these two sentences into one sentence? Carl is using a defense mechanism known as displacement. Displacement is the transfer of an emotion from its original focus to another object, person, or situation.

    asked by Missy
  212. math

    factor the polynomial: x^2 + 6x + 9

    asked by Bob
  213. physics

    a projectile is shot up 25 m/s at an angle of 34 degress how high imto the air does the projectile go?

    asked by kane
  214. English

    I forgot to include the following sentences on the same subject. Thank you for checking them. 1) The turning point of World War II came in 1941: Hitler, ignoring his pact, attacked Russia in June, and the Japanese, in December, attacked the American naval

    asked by Mike
  215. survey of science

    if a automobile with a mass of 500kg hits another car that has a mass of 650kg produces a force of 1800n, find the acceleration

    asked by angel
  216. math

    how do I find the rules for input output division tables

    asked by Tyra
  217. english 10

    Every sentence in the paragraph below violates some principle of good persuasive writing. Revise the paragraph, following the directions at the end of each sentence; use your imagination where necessary. Type the revised paragraph in the text box provided

    asked by Joven
  218. English

    I included the five statements I was not sure of. Thank you for helping me. 1) The turning point of World War II came in 1941: Hitler, ignoring his pact, attacked Russia in June, and the Japanese, in December, attacked the American naval base of Pearl

    asked by Mike
  219. math

    Double my tens digit to get my ones digit. Double me and I am less than fifty.

    asked by jack
  220. marketing,,,i need you help

    is anyone can help me to get an idea for this question.. how does a firm corporate cultur influence the performance of its personnel? relate the anwer to a small catering business that caters to corporate accounts.

    asked by jessie
  221. omt101

    A wire when bent into the form of a square encloses an area of 12 sq.cm. if the wire is bent in the form of a circle, then what would be the area?

    asked by Yogesh
  222. Chemistry Molarity

    What is the concentration, in units of molarity, of a 500mL solution containing 0.750 moles of sodium chloride in water?

    asked by Toni Jones
  223. social studies(history)

    1 – Tanzimat ile Meşrutiyet yönetimlerinin Osmanlı İmparatorluğu’nda meydana getirdikleri temel değişiklikleri yazınız. 2 – İttihat ve Terakki yöneticilerinin I. Dünya Savaşı’ndan beklentileri nelerdir. 3 – Çanakkale

    asked by brk
  224. math

    lim x->1 [(sqrt10-x)-3]/[1-(1/x)] Help please, Thankyou

    asked by ytu
  225. Chemistry

    How to prepare 1000 nM stock solution using Tam (1 gm) Mol Weight=563.6

    asked by Boobla
  226. Physics

    During a car race two cars,a ferarri and a mercedes crashed.The ferarri was travelling at a speed of 340km/h an the mercedes was travelling at a speed of 230km/h.What is the resultant crash

    asked by Sivashen
  227. English

    Is it okay if I use your cellphone? 1. I'm sorry, but it's broken. 2. I'm sorry, but it is out of battery. i need to charge it. 3. i'm sorry, but I can't use it at the moment. Where can I charge my cellphone. 4. i'm sorry, but it's not mine. I have to

    asked by rfvv
  228. English

    1. He may have gotten up late. 2. He may have a fever. 3. He may be running towards school. 4. he may have forgot to come to school. 5. He may have overslept. 6. He may be spending time playing computer games in a PC room. 7. He may be upset and doesn't

    asked by rfvv
  229. Math

    y= x-7 3x+6y=-6 I don't understand how to solve for the x-variable.

    asked by Erika
  230. math

    Find percent of number: 64% of 50

    asked by deb
  231. Ap english language composition

    write a five paragraph stylistic analysis essay about the story "Hills Like White Elephants" written by ernest hemingway

    asked by Linda
  232. math

    Which kind of graph will not let you calculate the range? Is it a bar graph, line graph, circle graph, or a pictograph?

    asked by Kevin Clary
  233. converter

    One foot is equal to how $many inches ?

    asked by Anonymous
  234. science

    Why is sucrose covalent but have ionic like characteristics? I am so confused I am doing a lab and i have no idea!

    asked by shannon
  235. math

    Ruth sells cars. She receives a commission of 12% on sales up to $35,000 and a commission of %24 on sales over $35,000. What is Ruth's commission if she sold a car for $50,000?

    asked by coco
  236. chemistry

    Besides actin and myosin, what is another example of a Contractile Protein? If you could tell me about its function too, that would help too. Thanks

    asked by Dre
  237. science

    Imagine a marble dropped from a tall building at 1.62 meters per second. How long would the marble be in the air. Velocity= Gravitational acceleration x time

    asked by Mary
  238. math

    The mean weight of 75 2nd graders is 55.7 lbs and the mean weight of 25 1st graders is 42.6 lb. What is the mean weight of the 100 children

    asked by jj
  239. Math

    The mean weight of 75 2nd graders is 55.7 lbs and the mean weight of 25 1st graders is 42.6 lb. What is the mean weight of the 100 children

    asked by Macy
  240. french 2

    -FRENCH 2- i am having a lot of trouble with l'imparfait et le passe compose-talking about actions in the past- and i need some tips on how to study.... anyone got suggestions? im open to anything. thank you very much! :)

    asked by kw
  241. FP/101

    Discuss some positive steps you can take to manage debt.

    asked by Monca
  242. Essay

    Im doing an essay and this is the format for it. Intro of 5 or more sentences, where you introduce your thesis statement(that which you will be writing about - in the form of a statement, or point of view) Two or three paragraphs, of about 8-10 sentences

    asked by Sara
  243. Calculus B

    The Antiderivative of: x(arctanx)dx It's clearly integration by parts with u=arctanx and dv=x, but after that I go down hill. HELP!

    asked by Brandon
  244. Math

    Find the vertical and horizontal asymtotes of y=1/x^2+6x+9

    asked by Tina
  245. Advanced Algebra

    Sam and David are among 5 students who have a chance to win a free airline ticket to San Diego. 2 students from the group will be selected at random to win a ticket. What is the possibility that the 2 students selected will be Sam and David?

    asked by Juan
  246. omt101

    Draw three differently shaped cross sections of an ellips

    asked by Yogesh
  247. Physics

    An object initially at a temperature of 80 C cools by 1 C in a time of 15 s when placed in a 20 C room When the object's temperature reaches 50 C, what is the average rate at which the object cools?

    asked by dan
  248. Physiology

    What condition triggers its release(e.g., glucose in blood) 1.Thyroid hormone 2.ADH 3. Aldosterone 4. Epinephrine 5. Melatonin 6. Estrogen

    asked by Ivy
  249. stressed and unstressed syllables

    how do you know a stressed or unstressed syllable

    asked by pat
  250. chemistry

    To culinary experts and to the average person the term “Extra Virgin” has a ring of exclusiveness and quality to it. When it comes to olive oil, exactly what does this term signify? I am supposed to explain the chemistry behind Extra Virgin Olive oils,

    asked by annonymous
  251. math

    how is the size of a parallelogram related to the size of to trapezoid

    asked by osdrian
  252. Algebra 2

    If y is inversely proportional to x and y=12 when x=2, what is the value of x when y=3? A. 2 B. 3 C. 8 D. 12

    asked by Lauren
  253. physics

    charging by induction creates charge by transferring charges from one object to another OR separates charges within an object

    asked by Sejul
  254. math

    In 1000 samples, assuming that the null hypothesis is true, how many times would you expect to commit Type I error if alpha=.05?

    asked by maria
  255. Algebra 1

    Bunson Burner has 3 liters of a 10% acid solution. How much of pure acid must be added to produce a 50% acid solution?

    asked by Cassidy
  256. Physics

    A spring has a spring constant, k, of 441 N/m. How much must this spring be stretched to store 22 J of potential energy?

    asked by Maria
  257. Physics

    What does the symbols u and u' stand for?

    asked by anon
  258. english

    what other ideas does Tom Corbett have in place to save money in PA?

    asked by kelly
  259. calculus

    find the derivative of F(x)=x^2-4/1+lnx

    asked by melissa
  260. Science

    What is a habitat?

    asked by Anonymous
  261. math

    I am less than 100. The sum of my didgits is 4. Half of me is an odd number.

    asked by jack
  262. college

    How much I2 is needed to stop decomposition of H2O2?

    asked by Michael
  263. Calculus B

    Find lim as x goes to 0 of (xsinx)/(1-cosx)

    asked by Brandon
  264. Science

    How many times a year does the moon go through its cycle or phases?

    asked by Kelly
  265. Math

    In the set of whole numbers is 4-9 meaningful

    asked by Anonymous
  266. math

    if right angle haveing perimeter=36,diagnol=15 then area=?

    asked by sonu
  267. History

    List the 4 goals of the Civil Rights Act of 1964 IN YOUR OWN WORDS!

    asked by Marie. Please, please help
  268. marketing,,please help me

    is anyone can help me please for this question. why are supplier an mportant uncontrollable factor for many companies?

    asked by jessie
  269. reading

    place a comma in this sentences since pete was always online playing computer games Andy decided to buy his own computer

    asked by kamal
  270. reading

    place a comma in this sentence convinced that she would need extra money for college,Andrea applied for a second job at the libary

    asked by kamal
  271. Need Websites

    Does anyone know good videos that teach you what Stock markets are and stuff - Childlike videos with simple terms would be great. Thanks in advance!

    asked by Anonymous
  272. Math

    A baseball manufacture checked 250 of its baseballs and found that 8 were defective. About how many would be defective out of 4500 baseballs? Could someone explain to me how to do this

    asked by HelpPlease Olivia
  273. Science

    Hello van some one show me how to draw a dot and cross diagramm for 1 lithium atom and 1 fluorine atom(Lif) and also a diagram for 1 magnesium atom and 1 oxygen atom (MgO) Thankyou Paul.

    asked by Paul
  274. history

    discuss the america 'third world counteroffensive' from 1979- 1989. was this in retospect, beneficial for the united states and the world in general?

    asked by fatima
  275. math

    I need to know when you have lettets how csn you deternine what the numbers will be. Ex: GRAPE - PLUM = APPLE. How would I he able to know what numhers represent the letters? Thanks

    asked by mary
  276. math

    jodi said that two congruent triangles that each have a base of 10 inches and a height of 6 inches is he correct

    asked by osdrian
  277. English

    I included a few more sentences I'm unsure of. The last refer to the UK in the 20s. 1) I subscribe ( subscribed?) to Sky to watch English channels. I'm disgusted with this soup. 2) I was disgusted by the news (not with the news?) of the Prime Minister

    asked by Mike
  278. Reading Comp.

    When we have too much work to do we become very anxious It is vital to set priorities and work on the most important things first. What does the second sentence do? a. It gives an example b. It makes a contrast c. It proposes a solution* d. It states an

    asked by Arlynn
  279. sociology

    i have to submit a paper on a similair artical about wal-mart failing in germany

    asked by Anonymous
  280. physics

    while many properties are similar, one important difference between electric and gravitational forces is that unlike gravity, electric charge: a)can be transferred b) objeys an inverse-square law

    asked by Nabil
  281. English

    I left out a very last sentence. Thank you very much! 1)Do you always make breakfast by yourself? To tell the truth, I sometimes have it made by my mum. Is it also possible: Do you always make yourself breakfast?

    asked by Mike
  282. science

    Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard

    asked by crystal
  283. english

    How might readers react if the topic sentences in an essay did not coincide with the supporting points, and why would their reaction be justified?

    asked by richard
  284. physics

    The weight of an object changed by +25.0%. The object's final weight was 2.5 grams. What is the initial weight of the object?

    asked by Anonymous
  285. Algebra II

    Please help-I'm totally lost- What is the equation of the ellipse with foci(-10,0), (10,0) and co-vertices (0,-3),(0,3) x^2/109 + y^2/9 = 1 X62/100 + y^2/9 = 1 Please show me the steps because I have others to do and I'm really stuck

    asked by Shiela
  286. english

    How can I make this into two sentences? Note: Ending the first sentence in book. Carl shows self-hatred also known as the death drive in the book when he says, "I hate my life. I want to die right now" (67).

    asked by Missy
  287. math

    you have a $5841 credit card debt, and you plan to pay it off through monthly payments of $71. if you are being charged 14% interest per year, how long will it take you to repay your debt?

    asked by ash
  288. History

    My teacher wants me to tell her what the climate is like in alaska but i cant seem to find anything about it in simple terms.... what is a good way to put it?? PLEASE HELP ME

    asked by Samantha
  289. calculus

    find the derivative of s(t)=(1+e^t)ln t

    asked by melissa
  290. math please help

    base 1=22in base 2=20in height=25in whats the area

    asked by osdrian
  291. precalculus

    log 60 4 estimate the following log

    asked by josh
  292. Science

    Compare an astronauts weight in orbit with the astronauts weight on Earth, assuming the mass of the astronaut doesn't change.

    asked by Janice
  293. Calculus B

    Prove: lim as x goes to 0+ of x^(sinx)=1

    asked by Brandon
  294. math

    If you multiply me by 2, I become a number greater than 20 and less than 40. If you multiply me by 6,I end in 8. If you multiply me by 4 I end in 2.

    asked by jack
  295. Math

    Mike and Ben split the cost of a new lawn mower. The regular price of the mower was $360. They used a 15% off coupon. They paid 6% tax on the reduced price of the mower. In dollars and cents how much did each pay?

    asked by Helperz
  296. math

    what is the base of a triangle that has a heigt of 17 and an area of 51

    asked by osdrian
  297. Essay - Changed some things

    Im doing an essay and this is the format for it. Intro of 5 or more sentences, where you introduce your thesis statement(that which you will be writing about - in the form of a statement, or point of view) Two or three paragraphs, of about 8-10 sentences

    asked by Sara
  298. science

    How many times a year does the moon go through its cycle or phases?

    asked by Kelly
  299. math

    the new price is $42 and the old price was $56, what is the percent of decrease?

    asked by gio
  300. algebra

    g(x)=10x find domain. please explain

    asked by manda
  301. math

    What is the median of this set? {π, √25, 15%, √15, 10/4 }

    asked by Lean
  302. physics

    all electric charges are multiples of the charge on an electron, or atom?

    asked by anonymous
  303. Science

    Explain- how would the gravitational force between Earth and the Moon change if the distance between them increased?

    asked by Karina
  304. math

    The number of Sophomores who eat lunch in the caeteria is about three-fouths the number of Freshmen. If there are 60 more Freshemen than Sophomores, how may Sophomores eat lunch in the caafeteria?

    asked by johnny
  305. physics (Science)

    If a bee flew 27 centimeters in 10 seconds what would its speed be?

    asked by Sara
  306. math

    symplify the expression if possible: e^3

    asked by mike
  307. trig

    y=1/4 cos (2/3 x +3 pi )

    asked by moh
  308. Algebra

    Hello. I am trying to figure out how to find the number of solutions in the following problem: (x + 8) (x + 8) = 0

    asked by David
  309. reading

    where do u think the commas belong? in fact most students find it hard to sleep past 6:00A.M. during the semester,so you as well take 8:00 classes

    asked by kamal
  310. math

    what is thename for the point where the three altitudes of a triangle are concurrent?

    asked by gwen
  311. algebra

    in need of help..;(.my question is find the vertex..y=x(x+7)

    asked by mel
  312. math

    a rectangle measures 10ft by 12 ft ,if there is anothere rectangle that is congruent to the one described ,how long are its sides?

    asked by Ariel
  313. Biology.

    Why are glycolen and starch good storage materials?

    asked by Syahirah.
  314. calc

    hi im totally blanking how do i find the antiderivative of cos(0.5(x^2))? thanks!

    asked by math
  315. math

    what part of a day is 45 minutes?

    asked by joe
  316. Math

    The mean weight of 75 2nd graders is 55.7 lbs and the mean weight of 25 1st graders is 42.6 lb. What is the mean weight of the 100 children?

    asked by MX
  317. science

    items that change from a chemical to thermal energy

    asked by uhyuuuuuug real name
  318. home economics

    IMPORTANCE OF ELECTRICITY TO THE DEVELOPMENT OF HOME ECONOMIS

    asked by YAKS
  319. Math

    Repeated sample of 36 are drawn from a population with mean 52 and standard deviation 18. What is the standard deviation of the distribution of the sample means?

    asked by Lori
  320. math

    what is the perimeter value of r=a(1+cos theta)

    asked by vivek
  321. Living on your own

    What would the greatest financial challenge in living on your own be? I'm guessing that would be paying off utilties, bills, grocery.

    asked by Allen
  322. 8th grade science

    what contents in magma affects a volcanos explosive?

    asked by jess
  323. science

    what contents in magma affects a volcanos explosive?

    asked by kailtlyn