Popular questions and responses by vincent
  1. math

    If shipping charges to certain point 62 cents for the first five ounces and 8 cents for each additional ounce, the weight of a package, in pounds, for which the charges are $1.66 is not just an answer please A.7/8 B.1 C.1 1/8 D.1 1/4 E.1 1/2

    asked on July 29, 2013
  2. Alg2/Trig

    Find the exact value of the trigonometric function given that sin u = 5/13 and cos v = -3/5. (Both u and v are in Quadrant II.) Find csc(u-v). First of all, I drew the triangles of u and v. Also, I know the formula of sin(u-v) is sin u * cos v - cos u *

    asked on June 4, 2009
  3. Mathematics

    Solve the simultaneous equation using substitution method:4x = y + 7and 3x + 4y + 9 = 0

    asked on June 5, 2020
  4. math

    In a 3 hour examination of 350 questions, there are 50 mathematics problems. If twice as much time should be allowed for each problem as for each of the other questions, how many minutes should be spent on the mathematical problems? not just and answer

    asked on July 29, 2013
  5. Mathematics

    Solve this equation 4x =y + 7

    asked on June 5, 2020

    if a bottle holding 3 liters of milk contains 3.5% butterfat,How much skimmed milk must be added to dilute the milk to 2% butterfat

    asked on September 18, 2015
  7. Makalema secondary school

    Aluminium reacts with oxygen to form aluminium oxide.How many grams of potassium chlorate would be heated to produce enough oxygen to form 5.1 grams of aluminium oxide?

    asked on August 20, 2015
  8. Pre-Calculus

    Find the area of the triangle. Round to the nearest tenth. B= 42.8° a= 12.7 c= 5.8 I found b by using the Pythagorean theorem and got b= 11.298 but I don't know what to do next after this. I would find the altitude but I don't know angles A and C?

    asked on November 29, 2009
  9. math corrections

    10. You have a nickel, a dime, a quarter and a fifty-cent piece. A clerk shows your several articles, each different price and any one of which you could purchase with your coins without receiving change. What is the largest number of articles he could

    asked on August 14, 2014
  10. math

    One wheel has a diameter of 30 inches and a second wheel has a diameter of 20 inches. The first wheel traveled a certain distance in 240 revolutions. In how many revolutions did the second wheel travel the same distance? not just an answer please A.120

    asked on July 29, 2013
  11. chemistry

    What is the unbalanced equation for the combustion reaction of gaseous C4H10 and gaseous oxygen to form gaseous carbon dioxide and gaseous water?

    asked on October 19, 2015
  12. Math

    If 30% of students over the age of 18 smoke and 9 students are chosen at random. What is the probability that less than 2 of them smoke.

    asked on November 13, 2019
  13. Maths

    There are 250 people at an international medical conference. 50 are africans, 80 are women and 180 are doctors. 20 of the women are Africans, 56 of the doctors are women and 35 of the Africans are doctors. If 10 of the African men are not doctors, how many

    asked on April 17, 2019

    Mae open her coin purse and found pennies,nickels and dimes with a total value of $2.85.If there are twice as many pennies as there are nickels and dimes combined.How many pennies,dimes and nickels are there if she has a collection of 90 coins given:

    asked on September 18, 2015
  15. Calculus

    Wheat is poured through a chute at the rate of 10 ft^3/min and falls in a cone-shaped pile whose bottom radius is always half its height. How fast is the height of the cone increasing when the pile is 8 feet high? Volume of a cone=1/3(pi)r^2h

    asked on November 2, 2014
  16. science

    Explain why Na2CO3 against HCL titration using phenolphthalein indicator does not go to completion but stops at the NaHCO3 stage.

    asked on November 25, 2013
  17. Math

    Given that cos 13pi/18=sin y, first express 13pi/18 as a sum of pi/2 and an angle, and then apply a trigonometric identitiy to determine the measure of angle y.

    asked on October 5, 2011
  18. Math

    Your friend sends out a chain letter e-mail to 12 people and by the next day 15 people have received the letter. Assuming an exponential growth pattern, how many new people will receive it by the 30th day?

    asked on March 26, 2019
  19. Calculus

    A stone is thrown into a calm pond and circular ripples are formed at impact. If the radius expands at the rate of 0.5 feet/second, how fast is the circumference and the area of the ripples growing when the radius is 3 feet?

    asked on November 2, 2014
  20. math

    If a circle had a circumference of 8.4 cm, what is the diameter of the circle to the nearest 0.1 cm?

    asked on July 28, 2013
  21. math

    Two cars begin driving toward each other from towns that are 150 miles apart. The first car is traveling 45 miles per hour, and the second is traveling 55 miles per hour. If each leaves at 2:15 pm, when will the two cars pass on the road?

    asked on July 17, 2013
  22. math

    How many gallons of water are needed to raise the level of a swimming pool 75' x 42' four inches above its present level? ( 1 cubic foot= 7 1/2 gallons )

    asked on September 14, 2014
  23. math

    6. In a survey of 100 people, 73 owned only stocks. Six of the people invested in both stocks and bonds. How many people owned bonds only? This is what I did: 73+6=79 100-79=21

    asked on August 20, 2014
  24. math

    19. Which statement describes the relationship between the line graphs of the equations below? y=-2x+4 y=0.5x+4 A.The line graph are the same line. B.The line graph are parallel lines. C.The line graph are perpendicular lines. D.The line graphs intersect,

    asked on August 14, 2014
  25. math corrections

    14. According to the Texas Parks and wildlife Department, there are about 40 white-tailed deer per square mile in each of 35 Texas counties. A rectangular area on a ranch in one of these countries measures 2.25 miles by 6.7 miles. Which of the following is

    asked on August 14, 2014
  26. math corrections

    I got a few questions wrong and i would like some explanations on these question: 2. A pair of pants sells for $6 more than 75% of its price of the pants? A.$12 B.$18 C.$20 D.$24 E.$36 Choice E is wrong. 4. What is the wall thickness, inches, of a tube

    asked on August 6, 2014
  27. math

    How many 5-digit even numbers can be made using the digits 2, 4, 6, 7, and 8, if digits cannot be repeated?

    asked on August 3, 2013

    Okay I've been working on this for 10 hours straight and cannot get it. This is a math problem from my teacher who just loves to add these frustrating math questions at the end of the worksheet. It says: If you add the age of a man to the age of his wife

    asked on July 30, 2005
  29. Physics

    A 6.0kg block is falling toward a spring located 1.80m below. If it has a speed of 4.0m/s at that instant, what is the maximum compression of the spring if the spring constant is is 2.000 x 10^3 N/m?

    asked on November 8, 2018
  30. Math

    A movie theater charges $5 admission for an adult and $3 for a child. If 700 tickets were sold and the total revenue received was $2900, how many tickets of each type were sold?

    asked on July 26, 2017
  31. computer networking

    A firm is assigned the network part 128.171. It selects an 10-bit subnet part. a) Draw the bits for the four octets of the IP address of the first host on the first subnet. Programming?

    asked on June 11, 2016
  32. Physics

    The water from two buckets is mixed together. One bucket contains 5kg of water at 20 degrees Celsius and the other contains 1kg of water at 80 degrees Celsius. What is the final temperature of the mixture, assuming no heat is lost to the surroundings? A.

    asked on November 5, 2015

    In three more years,Miguel's grandfather will be six times as old as Miguel was last year.When Miguel's present age is added to his grandfather's present age, the total is 68.How old is each one now?

    asked on September 18, 2015
  34. math

    An oil tank has a capacity of 45 gallons.At the beginning of October it is 80% full.At the end of October it is 1/3 full.How many gallons of oil were used in October? a. 21 b. 25 c. 41 d. 27 e. 30 my answer is (e)30, 45 x 1/3 =15 ,so 2/3 = 30

    asked on October 1, 2014
  35. math

    The diameter of a circle is increased by 50%.The area is increased by a. 50% b. 100% c. 125% d. 200% e. 250% please answer and explain

    asked on October 1, 2014
  36. math

    If the outer diameter of a cylindrical oil tank is 54.28 inches and the inner diameter is 48.7 inches,the thickness of the wall of the tank,in inches, is

    asked on October 1, 2014
  37. math

    23. There are two telephone companies provide home phone service in New York City. Company A charges $25 monthly fee and $0.10 for one minute after 30 minutes phone call. Company B charges $20 monthly fee and $0.12 for one minute after 30 minutes phone

    asked on August 25, 2014
  38. math

    14. If a equals 50% of b, then in terms of a 50% of 5b is equal to what?

    asked on August 23, 2014
  39. math

    15. What is the mathematical average of number of weeks in a year, seasons in a year, and the number of days in January? A.36 B.33 C.32 D.31 E.29

    asked on August 23, 2014
  40. math

    41. It takes Craig 20 minutes to type n pages. At these rates, how many hours will it take him to type 100 pages? All i know is 20/n

    asked on August 22, 2014
  41. math

    15. What is the mathematical average of the number of weeks in a year, seasons in a year, and the number of days in January? This is what I know so far: I know there is 52 weeks in one year.

    asked on August 22, 2014
  42. math

    3. If Leah is 6 years older than Sue and John is 5 years older than Leah, and the total of their ages is 41. Then how old is Sue? This what I have so far: L=s+6 J=L+5

    asked on August 22, 2014
  43. math

    If v,w,x,y, and z are consecutive multiples of 3, counting from smallest to largest. What is the value of v-w-x+y in terms of z? A.4z-4 B.-12 C.-30 D.0 E.4z

    asked on August 10, 2014
  44. math test review

    7. Given that w=7r+6r+5r+4r+3r. Which of the terms listed below may be added to w to the resulting sum will be divisible by 7 for every positive integer r? A.7r B.6r C.5r D.4r E.3r

    asked on August 6, 2014
  45. math

    The length of a rectangle is three times the length of a side of a square and the width of the rectangle is two less than the side of the square. If the perimeter of the rectangle is twenty eight more than the perimeter of the square, find the length of a

    asked on July 30, 2013
  46. math

    The base of an isosceles triangle is four less than the sum of the lengths of the legs. If the perimeter of the triangle is 44, find the length of the three sides of the triangle.[ Only an algebraic solution will be accepted ]

    asked on July 27, 2013
  47. math

    Jo saw a dress regularly priced at 78%. It was on sale at a discount of 30%. Find the amount of discount and the sale price.

    asked on July 21, 2013
  48. math

    If k = p/4, for which of the following values of p does k equal 3 ?

    asked on July 18, 2013
  49. math

    If # is a binary operation defined by a # b = maximum of { a, b } or a max b, find the value of 5 # 3.?

    asked on July 17, 2013
  50. math

    If the operation * is defined as a * b = 3a + b, find the value of 3 * 5.

    asked on July 17, 2013
  51. math

    Ten minutes after a plane leaves the airport, it is reported that the plane is 80 miles away. What is the average speed of the plane, in miles per hour?

    asked on July 17, 2013
  52. math

    A boy travels on his bicycle at the rate of 6 miles per hour and his sister on hers at the rate of 5 miles per hour. They start at the same time and place and travel over the same road in the same direction. After traveling for 3 hours, the boy turns back.

    asked on July 17, 2013
  53. math

    Mary can clean the house in 6 hours. Her younger sister Ruth can do the same job in 9 hours. In how many hours can they do the job if they work together?

    asked on July 16, 2013
  54. Finance

    A Treasury note with a maturity of four years carries a nominal rate of interest of 10 percent. In contrast, an eight-year Treasury bond has a yield of 8 percent. a. If inflation is expected to average 7 percent over the first four years, what is the

    asked on September 6, 2012
  55. AlgebraII

    Choose the equation that best represents an ellipse for the given foci and co-vertices. Foci (+/-3,0) Co vertices (0, +/-6)

    asked on July 20, 2012
  56. Math

    a bank of 16 floodlights together use 5600 watts of power how much power is used by each bulb

    asked on September 20, 2011
  57. physical

    A battery of e.m.f 24v and internal resistance of 4ohms is connected to a resistor of 3ohms.what is the terminal potential difference of the battery

    asked on March 6, 2011
  58. Pre-Calculus

    Solve the triangle. Round to the nearest tenth. B=54deg a=42 c=6.5 1. I found length of b using law of cosine and got 36.2 2. Using side of b, I used the law of sine to get angle A = 28.2 3. I added B+A and subtracted from 180 to get angle C = 127.8 which

    asked on December 7, 2009
  59. Pre-Calculus

    36x-15y+50z=-10 2x+25y=40 54x-5y+30z=-160

    asked on September 23, 2009
  60. Algebra2/Trig

    Find an equation of the parabola with vertex at the origin. Passes through the point (4,6); horizontal axis. I know it has to be y^2=4px. But I don't know what to do with (4,6). Please show step by step. Thanks.

    asked on February 3, 2009
  61. Human Resource

    Can someone please look over this and let me know if this is right. • Develop documentation for human resources professionals to manage a specific employment position. The materials you create would assist human resources professionals to choose, train,

    asked on September 28, 2007
  62. Financial accounting

    Mr Onyango operates an electronics shop along Kenyatta Avenue in Nairobi. He undertook the following transactions for the month of May 2018. 1 May 2018 4 May 2018 4 May 2018 5 May 2018 6 May 2018 8 May 2018 9 May 2018 12 May 2018 Purchased 50 stop watches

    asked on July 2, 2019
  63. iltexas

    how do you divide decimals

    asked on April 29, 2019
  64. Physics

    You accidentally drop a cell phone, if the cellphone lands on a grassy lawn, is its momentum less, the same, or greater?

    asked on November 12, 2018
  65. microeconomics

    Monopolist facing linear demand function p = 1000+40q and total cost function c = 500+26q.determine optimal price output and profit perfect profit

    asked on November 2, 2018
  66. science

    if an object`s mass is 9 kg and it`s height is 7 m what is the potential energy of the object

    asked on October 1, 2018
  67. Science

    A coil of inductance 0.04henry and negligible resistance is connected in parallel with a 10ohms resistor, across a 240volts supply of frequency 50hz. Calculate:1) the current through the resistance, 2) the current through the coil, 3)the supply current,

    asked on June 10, 2018
  68. Science

    Acetic acid(CH3O2H) reacts with isopentyl alcohol (C5H12O) to yield isopentyl acetate acetic acid with isopentyl alcohol is 45%,how many grams of isopentyl acetate are formed from 3.5g of accetic acid and 4.75g of isopentyl alcohol? The reaction is ;

    asked on March 4, 2018
  69. Math

    The number of blocks has 9 in the ones place. The number in the hundreds place is one more than the number in the tens place. Those two numbers equal 11. How many blocks are there?

    asked on November 5, 2017
  70. Math

    An amusement park sells 25 cent, 50 cent, and $1 tickets and a teacher purchases $32.50 worth of tickets. A student remarks that there are twice as many 50 cent tickets as there are $1 tickets and that the number of 25 cent tickets is 30 more than the

    asked on July 26, 2017
  71. Chemistry

    How many liters would 1.000g of helium gas occupy at STP?

    asked on January 29, 2017
  72. construction

    constuct two triangles ABC. let the length AB be 5cm and angleC be 54 degrees. find angles A1 and A2.

    asked on June 12, 2016
  73. physics

    A man of weigt 600N runs up the stairs of heigt 4m in 3seconds. what is exerted by the man?

    asked on May 26, 2016
  74. physics

    John pushes on a 400 kg refrigerator with a force of 800 N. While sliding a friction force of 300 N acts on the refrigerator. What is the acceleration of this refrigerator?

    asked on January 23, 2016
  75. Maths

    2tan x + sec x = 4cos x

    asked on December 7, 2015
  76. Maths

    The sum of three consecutive numbers is 365,find the numbers. X^2+y^2+z^2=365 x^2+(x+1)^2+(x+2)^2=365 After solving x=10 or -12 The nymbers are 10,11,12.

    asked on December 3, 2015
  77. Maths

    The sum of n numbers of geometric progression is GP=(2^n+1)-1. Find the first term and the common difference.

    asked on December 3, 2015
  78. Physics

    A car has wheels with tyres on, which are 75cm in diameter. The car is travelling at a constant speed of 60km/hr. If no slipping is observed between the wheels(tyres) and the road, calculate the angular speed and the acceleration of a stone wedged in the

    asked on December 2, 2015
  79. English 1

    the old people i remember from my childhood were strong in their beliefs, and as we lived daily with them we learned a wise path of life to follow.this quote from 'A celebration of grandfathers' by rudolfo anaya shows what writing style?

    asked on November 19, 2015
  80. Math

    Please help with function rule X Y -7 -1 -4 -3 -1 -5 2 7 5 -9 Thank you

    asked on November 4, 2015

    If a jeweller wishes to form 12 ounces oif 75%pure gold from substances that arev 60% AND 80% pure gold .How much of each substances must be mixed together to produce this?

    asked on September 18, 2015

    Sue is 8 years older than her pet goldfish Maya .In two years Sue's age will be three times Maya's age .What are their present age?

    asked on September 18, 2015

    The man gave 1/2 of his money to his brother,1/6to his friend and the remainder an amount of P150,000 which he kept.How much money does the man originally have?

    asked on September 18, 2015
  84. algebra

    The denominator of a fraction is 4 less than the numerator .If the denominator is doubled and the numerator is increased by 6,the sum of the original fraction and the new one is 3 .Find the original fraction.

    asked on September 18, 2015
  85. math

    For a experiment, Jenna needs to make a dilute solution that is 10 ounces of 40% acid. But Jenna only has solutions that are 30% acid and 70% acid. How many ounces of 70% acid solutions should she use? A. 2.5 ounces B. 5 ounces C. 7.5 ounces D. 8 ounces

    asked on April 12, 2015
  86. math

    Erin is making a pitcher of lemonade. Her pitcher is a cylinder with a diameter of 8.6x10^-2 meters and a height of 0.44 meters. What is the approximate total amount of lemonade that will fit in her pitcher? A.2.6 x10^-3 cubic meters B.1.0x10^-3 cubic

    asked on April 12, 2015
  87. Maths

    In a class of 39 pupils, 1/4 of the girls wear spectacles and 2/3 of the boys wear spectacles. A total of 16 pupils in the class wear spectacles. How many girls do not wear spectacles? Answer preferably in model method please.

    asked on March 15, 2015
  88. Physics

    When you jump vertically 0.86 meters above the ground, what is your acceleration when you reach your highest point?

    asked on February 18, 2015
  89. algebra

    80 is 25%of what number

    asked on January 14, 2015
  90. hvac

    if the current is one half ampere when the resistance is 240 ohms, what is the current when the resistance is 540 ohms?

    asked on January 6, 2015
  91. math

    If 4% of motorists on the Turnpike leave at a certain exit and 5% of these go to one particular motel for lodging,out of every 10,000 motorists how many motorists may be expected to go to this motel?

    asked on September 14, 2014
  92. check (math)

    56. Evaluate the following expression. (7^8x7^9)^10 This is what I did: 7^80x7^90 = 7^170

    asked on August 25, 2014
  93. math

    10. Michelle will divide 39 herbal tea bags and 91 mint tea bags among gift boxes. Each gift box will have the same number of herbal tea bags and the same number of mint tea bags. What is the greatest number of gift boxes Michelle can make?

    asked on August 23, 2014
  94. math

    8. How many different four digit numbers can be made from the digits 3,8,6, and 9 if each digit appears only once in the arrangement? Is the answer 10?

    asked on August 23, 2014
  95. math

    16. if (x^2-6x-16)/(x^2+8x+12)=2, what is the value of 4x?

    asked on August 23, 2014
  96. math

    35. If b is a positive integer less than 400 and more than 100, then how many integer pairs (a,b) satisfy the equation a/b=2/9?

    asked on August 23, 2014
  97. math

    7. What area remains when the area of a square with side 3 is subtracted from the area of circle with radius 2?

    asked on August 22, 2014
  98. math

    35. If b is positive integers less than 400 and more than 100, then how many integer pairs (a,b) satisfy the equation a/b=2/9?

    asked on August 22, 2014
  99. math

    20.Which of the following numbers could be described in the following way: an integer that is natural, rational and whole number? I think the answer is B A.0 B.1 C.2.33 D.-3 E.none of the above

    asked on August 22, 2014
  100. math

    48.Kate's class has between 40 and 51 students. Exactly of 75%of the students in her class have black book bags, and exactly 1/6 of students in her class do not have a book bag at all. How many students are in Kate's class?

    asked on August 22, 2014


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