Questions Asked on
June 17, 2014

  1. chemistry

    Calculate the volume of nitrogen gas that will be produced in the air bag of a car when 88,8g of sodium azide is thermally decomposed at 22 C to give the bag a pressure of 1,10 atm

    asked by Anonymous
  2. algebra

    Clark wants to figure out how many pens to order for the office. There are 48 workers, and he needs to order one pen for each worker . He knows that for every six people who preferred , there are six who prefer blue . How many blue pens should he order?

    asked by darrick
  3. English

    aside from any grammar or spelling mistakes how is this essay! Can the perfect ideal of loyalty ever be achieved? With no guidelines how can you match a book definition of loyalty. Loyalty is essential in human life, but what is it. The dictionary will

    asked by annie
  4. English

    Later, King led a famous march on Washington and worked for equal rights. -------------- (Is this sentence correct? The use of the preposition 'on'?)

    asked by rfvv
  5. statistics

    The true highway mileage, Y, of a specific brand of hybrid vehicle has a normal distribution with a mean of 42 and a standard deviation of 1.5. Find the probability that a randomly selected hybrid vehicle gets more than 38 miles to the gallon.

    asked by lisa
  6. Medical

    Dr. S. is working within a reimbursement system where the insurance is billed after all the treatment has been given to the patients. The main reason that he orders more tests, exams, and procedures under this system is A. fear of being sued. B. to make a

    asked by Natalie westbrook
  7. Chemistry

    if 50 ml of a solution of ph 3 is mixed with 50 ml of a solution of 5, explain why the resulting ph is still about 3 and not 4?

    asked by Abdulhafiz
  8. physics

    to find angle of deviation with angle of incidence through a hollow prism with different transparent fluids(i.e ., water,kerosene,sprit,turpentine oil) with angle of incidenceof30,35,40,45,50,55,60 degree.

    asked by geet
  9. chemistry

    if the components of air are N2-78% ;O2-21%; Ar-0.9% and Co2-0.1% by volume (or mole) what would be the molecular weight of air?

    asked by shish
  10. chemistry

    if from 3moles MgSO4.7H2O all the 'o' atoms are taken out and converted into ozone, find the number of O3 molecules formed.

    asked by shish
  11. chemistry

    if from 10 moles NH3 and 5moles of H2SO4 all the H-atoms are removed in order to from H2 gas, then find the no. of H2 molecules formed.

    asked by shish
  12. chemistry

    from 200 mg of CO2, 10^21 molecules are removed. how many moles of CO2 are left?

    asked by shish
  13. chemistry

    calculate the wt. of 6.022x 10^23 formula units of CaCO3

    asked by shish
  14. math

    Mike's number is 2000 more than Jerry's which is 400 less than Barry's. Larry's number is 1500 more than Sam's, which is 443. Sam's number is 60 less than Barry's.

    asked by Samantha
  15. chemistry

    the no. of neutrons in 5g of D2O(Dis 2/1 H) are:

    asked by shish
  16. math

    Mike's number is 2000 more than Jerry's which is 400 less than Barry's. Larry's number is 1500 more than Sam's, which is 443. Sam's number is 60 less than Barry's. WHat is each boy's number?

    asked by Samantha
  17. chemistry

    a sample of ethane has the same mass as 10million mulecules of methane. how many moles of CO2 are left?

    asked by shish
  18. chemistry

    calculate the no. of molecules in 16g of methane is:

    asked by shish
  19. chemistry

    calculate the number of malecules in a drop of water weighting 0.09 g

    asked by shish
  20. chemistry

    average atomic mass of magnesium is 24.31 amu. this magnesium is composed of 79 mole % of ^24 Mg and remaining 21mole % of ^25 Mg. calculate mole % of ^26Mg.

    asked by shish
  21. chemistry

    the density of liquid mercury is 13.6 g/cm^3. how many moles of mercury are there in 1 litre of the metal?

    asked by shish
  22. English please help me

    Please help me to correct my English grammar. thank you. June 17, 2014 Dear sir, Good day, I regret when I resigned from your company but it’s my family’s reason. I am now presently working here in Maldives as a professional photographer and salesman

    asked by paul
  23. chemistry

    how much time(in years) would it take to distribute one avogadro number of wheat grains if 10^10 grains are distributed each second?

    asked by shish
  24. chemistry

    the weight of one atom of uranium is 238 amu. its actual wt. is ......g

    asked by shish
  25. chemistry

    find (i) the total no. of neutrons and (ii) the total mass of neutrons in 7mg o^14C. (assume that the mass of a neutron = mass of a hydrogen atom)

    asked by shish
  26. math

    maria runs 7 miles in 80 minutes. At the same rate, how many miles would she run in 64 minutes

    asked by alia
  27. physics

    1.when a person diet's is their goal to lose weight?explain. 2.a man enters an elevator holding 2 boxes one on top of the other the top box has a mass of 6.0kg,the bottom box has a mass of 8.0kg. the man sets the 2 boxes on a metric scale sitting on the

    asked by errol
  28. math

    blank + 5277-9384=2240

    asked by shantell
  29. math

    57865-blank+23129=48675

    asked by liah
  30. math

    57865 - blank + 23129 = 48675

    asked by liah
  31. Calculus

    The median value of a home in a particular market is decreasing exponentially. If the value of a home was initially $240,000, then its value two years later is $235,000. a) Write a differential equation that models this situation. Let V represent the value

    asked by Jamie
  32. math apr

    A car with a sticker price of $42,650 with factory and dealer rebates of $5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the nearest cent.) (b) Find the monthly payment if financed at 2.5% add-on interest for

    asked by lisa
  33. math

    Approximately how much principal would need to be placed into an account earning 3.575% interest compounded quarterly so that it has an accumulated value of $68,000 at the end of 30 years?

    asked by Anonymous
  34. Liberal Arts Math

    Marie sells magazine subscriptions. She earns $15 a week plus $3 for each subscription she sells. How many subscriptions must she sell to earn $90 in one week?

    asked by Craig Morales
  35. math

    e. Felix Baumgartner is a daredevil famous for breaking the sound barrier during a freefall on October 14, 2012. Aided by a weather balloon, he climbed to a height of 128,100 feet. More than 24 miles in the air, he was so high up that he could see

    asked by kat
  36. math

    'a gardener plants an orchid with 5776 trees. in each row there were as many trees as the number of rows. find the number of rows'

    asked by Anonymous
  37. Maths

    30% of the pupils in a class are boys.there are 21 girls.how many pupils are there in the class in all?

    asked by Anonymous
  38. math

    Evan is making a table that will be created in the shape of the figure below. The table top is a triangle attached to a rectangle. To purchase the right amount of paint, he needs to know the area of the table top. He can only spend $10 on paint, which is

    asked by nana
  39. Maths

    30% of the pupils in a class are boys.there are 21 girls.how many pupils are there in the class in all?

    asked by Anonymous
  40. english

    I want to either study or to work abroad after I graduate.

    asked by tom
  41. science

    A force of 20 n gives a ball an acceleration of 4.0 m/s3 on a lever frictionless surface. what is the mass of the ball?

    asked by Joey
  42. computer

    What are the steps in formatting texts?

    asked by tsunayoshi
  43. Science

    1. Why is ice a faster surface for sleddikng than snow? a. Ice is flatter than snow. B. Ice is colder than snow. C. Ice provides less friction. D. Ice has less mass than snow. My answer- A

    asked by dddd47906
  44. gometry

    in a circle of radius 17cm, two parallel chords are drawn on opposite sides of a diameter. the distance between the chords is 23cm. if the length of one chords is 16cm, find the length of the other.

    asked by Anonymous
  45. Angles,Lines and Triangles

    The sum of two angles of a triangle is 116 degree and their differences is 24 degree.Find the measure of each angle of the triangle.

    asked by Harsh
  46. Angles,Lines and Triangles

    Two angles of a triangle are equal and the third angle is greater than each one of them by 18 degree.Find the angles.

    asked by Harsh
  47. physics

    A sailboat race course consists of four legs, defined by the displacement vectors , , , and , as the drawing indicates. The magnitudes of the first three vectors are A = 2.80 km, B = 4.70 km, and C = 4.50 km. The finish line of the course coincides with

    asked by Anonymous
  48. health care

    What factors should be considered to avoid legal risk in ambulatory care? Explain your answer.

    asked by Carol
  49. Education

    Of progressive administration and progressive pedagogy, which approach is most effective for learners today and why? I have researched both and cannot decide.

    asked by Cathy
  50. Finance

    Templeton Extended Care Facilities, Inc. is considering the acquisition of a chain of cemeteries for $400 million. Because the primary asset of this business is real estate, Templeton’s management has determined that they will be able to borrow the

    asked by Jan
  51. math

    Mr. Simon landscapes new houses for a building contractor. He charges by the square meter of yard space plus a setup fee. He billed the contractor $2,150 for a 400-square- meter yard and $1,650 for a 300-square-meter yard. Write an equation in the form y =

    asked by Anonymous
  52. finite math (probability

    suppose you toss a coin 100 times and get 57 heads and 43 tails. Based on the results what is the probability that the next toss will be head.

    asked by carol
  53. finite math

    According to a certain countries 43.8% of 3 year olds are enrolled in daycare. What is the probability that a randomly selected 3 year old is enrolled in daycare.

    asked by carol
  54. algebra 1

    The Zepeda family filled the gasoline tank of their minivan at the beginning of a long trip. The relationship between the number of miles driven and the number of gallons remaining in the tank can be modeled with a linear function. When they had driven 120

    asked by calgy
  55. finite math

    A baseball player hit 54 homeruns in a season. Of the runs, 17 went to right field, 16 went to right center field, 8 went to center field, 8 went to left center field and 5 went to left field. What is the probability that a randomly selected home run went

    asked by carol
  56. finite math

    A probability experiment was conducted in which the sample space of the experiment is S={1,2,3,4,5,6,7,8,9,10,11,12}, event F= {3,6,7,}, and event G={9,10,12}. Assume that each outcome is equally likely. List the outcomes of F and G. find P(F or G) by

    asked by carol
  57. probability

    Find the probability of P(E or F) if E and F are mutually exclusive P(E)=0.41 and P(F)=0.47

    asked by carol
  58. probability

    A golf ball is selected at random from a golf bag. If the bag contains 2 orange balls, 5 red balls, and 18 brown balls, find the probability of the event. That the golf ball will be orange or red.

    asked by carol
  59. finite math

    The probability that a 3-year old garter snake will reach 4 years old is 0.94461. (a) what is the probability that two randomly selected will reach 4 years old? What is the probability that five randomly selected 3 year old garter snakes will reach 4 years

    asked by carol
  60. finite math

    Among 26-31 year old, 29% say they have written an editorial letter while under the influence of peer pressure. Suppose six 26-31 year old are selected at random. (a) that at least one has not written under the influence of peer pressure. (b) what is the

    asked by carol
  61. finite math

    Suppose that E and F are two events P(E and F)=0.1 and P(E)=0.5. what is P(F/E)?

    asked by carol
  62. probability

    10. The probability that a randomly selected individual in a country earns more than 75,000 per is 11.5%. the probability that a randomly selected individual in a country earns more than 75,000 per year, given that the individual has earned a bacholer’s

    asked by carol
  63. MaTh..

    Determine whether the system of equations is in row-echelon form. x-y+3z=-11 y+8z=-12 z=-2

    asked by Anonymous
  64. physics

    An object of mass 50kg is placed on inclined plane at an angle of 30 degrees to the horizontal. The height of the plane is 250cm and it's length is 500cm. What is the workdone in moving the object down the plane?

    asked by wilfred nder
  65. Math

    A hair product company sells three types of hair products for $30, $20, and $10 per unit. In one year, the total revenue for the three products was $800,000, which corresponded to the sale of 40,000 units. The company sold half as many units of the $30

    asked by Julia
  66. Physical Science

    is the work needed to bring a car's speed from 0 to 10 km/h less than. qual to. or more than the work needed to bring its speed from 10 to 20 km/h? in the amounts of work are different, what is the ratio between them?

    asked by bonnie
  67. physics

    The drawing shows an equilateral triangle, each side of which has a length of 4.53 cm. Point charges are fixed to each corner, as shown. The 4.00 C charge experiences a net force due to the charges qA and qB. This net force points vertically downward and

    asked by Lindsay
  68. Math

    Write the quadratic function in standard form (if necessary) and sketch its graph. Identify the vertex. f(x)=x^2+3x+1/4

    asked by James
  69. finite math

    According to a certain countries 44.5% of 3 year olds are enrolled in daycare. What is the probability that a randomly selected 3 year old is enrolled in daycare. edited

    asked by carol
  70. English 11

    In which sentence is the underlined word the direct object? Rulers in totalitarian countries are very powerful. In a monarchy, kings or queens give people the laws. In a democracy, elected leaders make decisions.

    asked by Destiny May
  71. algebra

    Twice the first number is eleven more than the sum of the other two numbers. The sum of twice the first number and three times the third number is one more than the second number. The second number is equal to the sum of the first number and the third

    asked by nelly
  72. american history

    Which of the following was John Rolfe's chief contribution to Virginia's economy? A. His innovations in cultivating tobacco B. His invention of a better way to grow short-staple cotton C. His innovations in rice cultivation D. His alliance with the

    asked by chance
  73. Statistics

    there is a 1/5 (.20) probability that one type of appliance will break with in two years. find the probability that 4 out 15 such appliances willl break within that time period

    asked by Anonymous
  74. biology

    Discuss the concept of species. What ways do modern taxonomists use to distinguish different species?

    asked by Anonymous
  75. Leadership

    I need help to put these characteristics in order. Please help me!! - dance ability -leadership -morality -ethical -responsible -caring -structured -organized -initiative -respectful

    asked by Anonymous
  76. physics

    a child drops a toy at rest from a point 4m above the ground at the same instant her friend throws a ball upward at 6m/s frrom a point 1m above the ground. at what distance above the ground do the ball and the toy cross paths?

    asked by Michael Lipa
  77. Physics

    A skier swoops down a hill and over a ramp. She starts from rest at a height of 18m, leaves the ramp at an angle of 45 degrees, and just clears the snowman on her way down, making an angle of 30 degrees with the vertical as she does. Assuming that there is

    asked by Jenny
  78. health

    hat is another name for bipolar disorder?

    asked by ian
  79. CALCULUS II

    Hi, I needed help with this improper integral. lower limit : 2 upper limit : infinity integral of (lnx)/(x+1) dx Thank You so much :D

    asked by BRADLEY
  80. Math

    The class with the greatest mean sales in a spring fundraiser will win a prize. The mean for Eric's class is $148. The mean for Natalia's class is $152. Natalia's sales total $150. If Natalia moves to Eric's class, the mean for each class increases.

    asked by Annie
  81. physics

    A person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her clothes to the walls of the room. If the walls are at 11.5° C and the rate of radiation is 75.2 kcal/h (a typical basal metabolic rate),

    asked by Anonymous
  82. algebra

    Arianna is buying plants for her garden. She buys 15 flowering plants for $96. Pink flowering plants sell for $8, and purple flowering plants sell for $5. How many pink flowering plants did Arianna buy?

    asked by Andrea Flores
  83. Math PLZ help me

    Hi, I needed help with this improper integral. lower limit : 2 upper limit : infinity integral of (lnx)/(x+1) dx Thank You so much :D

    asked by Bradley
  84. english

    I expect a friend to both honest and a loyal pereson

    asked by tom
  85. math

    Shipping dimensions given by the distributor are 10 cm x 20 cm x 22 cm. What will you enter in ‘Shipping dimensions’ field in our system? Shipping dimensions = ?

    asked by zyd
  86. Physics

    A block of mass m = 2.4 kg is released from rest at a height of H = 3.0 m on a curved frictionless ramp. At the foot of the ramp is a spring whose spring constant is k = 317.0 N/m. What is the maximum compression of the spring, x?

    asked by Devon
  87. Organic Chemistry

    These questions are somewhat difficult. I believe I am on the right track, but I want to make sure. 1. List these compounds in order of decreasing reactivity towards nitration. Explain your answer. a) acetanilide b) bromobenzene c) toluene d) acetophenone

    asked by Anonymous
  88. american history

    Thomas Jefferson was concerned that the treaty formalizing the Louisiana Purchase A. would place an unfair tax burden on American citizens. B. might be unconstitutional. C. would invite French hostility. D. was clearly illegal.

    asked by chance
  89. medical billing

    if an institutional review board is involved in a request information, the information is likely by a

    asked by Anonymous
  90. algebra

    scs paid $4400 to buy desks.it bought d desks all together.What algebric statement shows the cost for one desk?

    asked by Anonymous
  91. geometry

    A 15m by 15m square garden has a 2m wide path that runs through the center.what is the area of the garden that is available for planting?

    asked by Lorna
  92. arithmetic

    In a box of 800 oranges,72 are bad.what percentage is bad?what percentage is good?

    asked by siyenna
  93. CHemistry

    What is the concentration of Sulfate ion in a 0.5 M solution of Al2(SO4)3?

    asked by Praphul
  94. physics

    At a certain instant a ball passes location < 11, 10, -16 > m. In the next 3 seconds, the ball's average velocity is < -8, 37, 30 > m/s. At the end of this 3 second time interval, what is the height y of the ball?

    asked by rebekah
  95. algebra

    simplify.. m+m+m+m+y+y

    asked by siyenna
  96. math

    what is the vertex of y=x^2-4 ??

    asked by sunny
  97. Functions

    A farmer wants to enclose a rectangular field with 180m of fencing. The side of the barn will act as one side of the enclosure, leaving 3 sides to be covered. The function that describes the area inside is f(x)=x(180-2x) what are the dimensions of the

    asked by Mathlete
  98. PHYSICS.

    5. A motor lifts a 12 kg mass to a height of 15 m at a constant velocity in 3.5 s. a) Find the power b) If the motor is only 35% efficient find the input energy.

    asked by Unknown
  99. algebra

    are the lines through each points parallel or perpendicular. (2,4) (-1,-1) (8,0) (11,5) solve

    asked by cherry
  100. MATH

    Solve the system of linear equations 2x+y-3z=4 4x+2z=10 -2x+3y-13z=-8 *im so lost (all these numbers are in one problem)

    asked by Anonymous
  101. Math

    The entire can needs to be painted, including the top and bottom. If the diameter of the lid (x) is 5 cm, and the height of the can (y) is 9 cm, what is the approximate total surface area that will need to be painted?

    asked by Rebecca
  102. Maths

    Write a sentence that explains the relationship between the two numbers. 5/1/2 + 14 (5/1/2 + 14) x 1/4 . My answer was they are all whole numbers am I correct

    asked by Pinks
  103. Chem

    Set up a Hess’s law cycle, and use the following information to calculate ΔH∘f for aqueous nitric acid, HNO3(aq). You will need to use fractional coefficients for some equations. 3NO2(g)+H2O(l)→2HNO3(aq)+NO(g) ΔH∘ = -137.3 kJ

    asked by Meg
  104. Chem URGENT

    How much energy (in kilojoules) is released when 13.3g of steam at 114.5∘C is condensed to give liquid water at 67.0∘C? The heat of vaporization of liquid water is 40.67 kJ/mol, and the molar heat capacity is 75.3 J/(K⋅mol) for the liquid and 33.6

    asked by Jess
  105. Physics

    Carlo drives his car for a picnic by first going 105 km north to pick up his girlfriend and then 120.0 km east to reach the picnic groove. The whole trip takes 135 min. Calculate (a) Carlo’s average speed and (b) average velocity.

    asked by Piper
  106. Physics

    On the way to class, you walk north and then west such that your resultant displacement is 290 m in a direction 250 west of north. Your average velocity is 2.0 m/s in the same direction as the displacement. Calculate (a) your walking time and (b) your

    asked by Piper
  107. chemistry

    "To save on production costs, most automobile bumpers are never coated with more than 200 g of chromium. Determine how much time a standard bumper should be immersed in a chromium vat." This is what I have so far- 96,485 coulombs are required to plate 1

    asked by anonymous
  108. Chemistry - Electroplating - URGENT

    "To save on production costs, most automobile bumpers are never coated with more than 200 g of chromium. Determine how much time a standard bumper should be immersed in a chromium vat." This is what I have so far- 96,485 coulombs are required to plate 1

    asked by Em
  109. Math

    Solve for the 101st term of the sequence whose 1st term is x-y and d=2x+y-3.

    asked by Annika
  110. Math

    Find the 12th term of the arithmetic sequence 2, 6, 10, … .

    asked by Annika
  111. geometry

    in the proportion 2/8=8/32, which numbers is the geometric mean of the other two numbers?

    asked by alice
  112. Math

    Hi, I needed help with this improper integral. lower limit : 2 upper limit : infinity integral of (lnx)/(x+1) dx Thank You so much :D

    asked by Bradley
  113. algebra

    Select the approximate values of x that are solutions to f(x)=0, where f(x) = -2x^2+8x+5

    asked by Anonymous
  114. physics

    At noon on a clear day, sunlight reaches the earth\'s surface at Madison, Wisconsin, with an average power of approximately 1.00 kJ·s–1·m–2. If the sunlight consists of photons with an average wavelength of 510.0 nm, how many photons strike a 2.60

    asked by Julie
  115. Math

    Black Eyed Peas’ 2011 Live Concert is to take place in a circular park. Due to the shape of the area, seats are set up so that the innermost row has 64 seats and each successive row has 17 more seats than the row before it. The park’s open area can

    asked by Jade
  116. Math

    Find the value of x so that 3x – 2, 2x – 1 and 4x – 3 form an arithmetic sequence.

    asked by Jade
  117. Chemisty

    A 0.411 g sample of powdered copper mixed with an inert, soluble additive was fully consumed by 23.4mL of 0.602M nitric acid, producing copper (II) nitrate, water, and nitric oxide. What is the percent copper by mass in the sample? 3Cu + 8HNO3 = 3Cu(NO3)2

    asked by Veronica
  118. physics

    Any vector can be written as a unit vector multiplied by the magnitude of the vector (a positive scalar). Write each of the following vectors as the magnitude of the vector times the appropriate unit vector: < 0.00330, 0, -0.00330 >

    asked by rebekah
  119. probability and statistics

    Suppose every student in your class got a score of 85% on an exam. What are the mean and standard deviation of those exam scores without doing any calculations? I want to say the mean is 100 and the standard deviation is 1 but I don't know why. If all

    asked by Tiffany
  120. arithmetic

    a tent needs 8.3 meters of fabric.Ifthe fabric cost $32.00 per meter,how much will it cost to make the tent?

    asked by Lorna
  121. arithmetic

    the temperature in Montreal is -3 degrees celsius at 10.00pm.by 6:00 am the temperature has dropped another 11 degress celsius.what is the new temperature?

    asked by Lorna
  122. Physics

    A person runs 800. m at an average speed of 6.00 m/s and then the next 800. m at an average speed of 8.00 m/s. Calculate (a) the total time of travel and b) the average speed.

    asked by Jade
  123. Math

    – 11 is the __________ term of the arithmetic sequence – 847, – 836, – 825, – 814, – 803, …

    asked by Jade
  124. Math

    Use back substitution to solve the system of linear equations x-2y+z=8 y+z=5 z=2 **I tried to solve it eventho im still confused/lost. 1=3 idk ugh

    asked by Anonymous
  125. geometry

    what is the greatest mass that can be taken an exact number of times from 720kg,1008kg and 672kg?

    asked by Ghislaine
  126. geometry

    LP turne 360 degrees every minute,if one side of an LP plays for 48 minutes,how many times does it turn around?

    asked by Ghislaine
  127. Chemistry

    1. Nitric acid is produced via the following equation: 3 NO2 + H2O = 2HNO3 + NO. How many grams of NO2 are required to produce 7.5 grams of HNO3?

    asked by Brett
  128. geometry

    A bicycle tire has a diameter of 60cm and rotates 33.3 revolutions per minute.How far does a point on the edge of the tire travel in a minute? Use 3.14 for pi.

    asked by Ghislaine
  129. geomerty

    please calculate 7/4 x 40

    asked by Ghislaine
  130. vocab

    I was (hardy,indisposed) to accept the halfhearted invitation that reached me only a day before the party ANS - indisposed

    asked by need help
  131. MATH

    what is answer of this problem set X={X/X IS A BOY}

    asked by JANE
  132. VOCAB

    No matter how efficient the new chairperson may be, the meeting will not proceed (harmoniously, authoritatively) unless the new members cooperate Ans - harmoniously A party that cannot offer new ideas to deal with the pressing problems of the day must be

    asked by need help
  133. algebra

    a rise of 4 meters and a rise of 6 meters

    asked by Anonymous
  134. Algebra/please can some one help I forgot

    ind the monthly payment for the loan. (Round your answer to the nearest cent.) Finance $450,000 for a warehouse with a 7.50% 30-year loan Thank you for your help.

    asked by Mary Ann
  135. organic chemistry

    1. Arrange the following in order of decreasing reactivity toward nitration. Fully explain please I could use some help!! A. acentanilide, b. bromobenzene, C. acetophenone, D. toluene 2. Explain why p-nitrophenol is a stronger acid than phenol itself?

    asked by Anonymous
  136. math

    Determine whether the system of equation is in row-echelon form. x-y+3z=-11 y+8z=-12 z=-2

    asked by julia
  137. finite math

    Suppose a coin is tossed 100 times 57 heads and 43 tails what is the probability the next one will be heads.

    asked by carol
  138. finite math

    According to a certain countries 44.5% of 3 year olds are enrolled in daycare. What is the probability that a randomly selected 3 year old is enrolled in daycare.

    asked by carol
  139. finite math

    A baseball player hit 59 homeruns in a season. Of the runs, 22 went to right field, 15 went to right center field, 8 went to center field, 8 went to left center field and 6 went to left field. What is the probability that a randomly selected home run went

    asked by carol
  140. finite math

    A probability experiment was conducted in which the sample space of the experiment is S={1,2,3,4,5,6,7,8,9,10,11,12}, event F= {6,7,}, and event G={9,10,11,12}. Assume that each outcome is equally likely. List the outcomes of F and G?. find P(F or G) by

    asked by carol
  141. math

    Lily designed a deck in her backyard that is in the shape of a quadrilateral that has only 1 pair of parallel sides. What is the shape of the deck?

    asked by Anonymous
  142. finite math

    Find the probability of P(E or F) if E and F are mutually exclusive P(E)=0.25 and P(F)=0.47

    asked by carol
  143. finite math

    A golf ball is selected at random from a golf bag. If the bag contains 3 black balls, 8 orange balls, and 4 brown balls, find the probability of the event. That the golf ball will be black or orange.

    asked by carol
  144. finite math

    The probability that a 3-year old garter snake will reach 4 years old is 0.62719. (a) what is the probability that two randomly selected will reach 4 years old? What is the probability that five randomly selected 3 year old garter snakes will reach 4 years

    asked by carol
  145. finite math

    8. Among 38-43 year old, 25% say they have written an editorial letter while under the influence of peer pressure. Suppose two 38-43 year old are selected at random. (a )what is the probability that at least one has not written under the influence of peer

    asked by carol
  146. finite math

    Suppose that E and F are two events P(E and F)=0.1 and P(E)=0.4 what is P(F/E)?

    asked by carol
  147. Physics

    Consider problem U concerning the geosynchronous satellite of mass 50 kg. It orbits at a radius of 42,300 km with a speed of 3076 m/s. a) How much energy is needed to lift the satellite from the earth's surface (Re=6,370 km) up to that radius? b) How much

    asked by Rahul
  148. finite math

    The probability that a randomly selected individual in a country earns more than 75,000 per is 10.5%. the probability that a randomly selected individual in a country earns more than 75,000 per year, given that the individual has earned a bacholer’s

    asked by carol
  149. math

    un Lanes Bowling charges a fee of $4 to use their shoes and $6 for each game played. Salim wants to figure out how much it will cost him to bowl. Part 1: Write an equation representing this problem. Let x be the number of games bowled, and let y be the

    asked by Madison
  150. Algebra

    18z+45+z^2 (factor) please show steps

    asked by tbell
  151. Math

    Prove the identity csc^2x = 2sec2x / sec2x - 1 Sorry i really tried. I got : LS = 1 - (cos^2x/sin^2x) but that's it. please help

    asked by Nihira
  152. Calculus

    The CIA published data about foreign countries on its web page. In particular they show total population as well as population growth. If a student is looking at Russia, they will see that the total population of Russia is declining. When they look at the

    asked by Jamie
  153. Algebra

    a^4 b+a^2 b^3 simplify

    asked by tbell
  154. finite mate

    find the value of the permutation 12P0

    asked by carol
  155. English

    1. Guess what? 2. What do you guess? 3. What do you think? 4. What is your opinion? ------------- Which one is similar to #1 among the three in meaning?

    asked by rfvv