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  1. Math

    Find the value of an odd natural number x if LCM(x, 40)=1400

  2. Math 4

    There are 20 teachers and 705 students in Corey's school. What is the ratio of teachers to students? How would I solve this problem? PLZ help me! :(

  3. math

    salil travels 9km towards east then8km towards north and finally 7km towards east . how far away is he from his original place?

  4. English

    Write a debate on the topic;Boys should not help in the kitchen.Speak for or against the motion.

  5. physics

    A soccer ball of diameter 32 cm rolls without slipping at a linear speed of 2.4 m/s. Through how many revolutions has the soccer ball turned as it moves a linear distance of 16 m?

  6. math

    If I make 9 brownies with 2 cups of cocoa and ! cup of sugar, how many cups of sugar do I need for 81 brownies?

  7. Math

    Ralph's age is currently 3 years more than twice joe's age. But 3 years ago, ralph was was 4 times as old as Joe was the . How old will joe be in 10 years?

  8. Physics

    A tension of 6000 newtons is experienced by the elevator cable of an elevator moving upward with an acceleration of 2m/s^2. what is the mass of the elevator

  9. Chem

    How many grams of Ni would be electroplated if a constant current of 7.2 amperes is passed through a solution of NiSO4 for 90.0 min?

  10. Math

    GCF of 2 natural numbers is 3 and their LCM is 180 if one of the numbers is 45 then find second number

  11. math

    A school has 63 students studying Physics, Chemistry and Biology. 33 study Physics, 25 Chemistry and 26 Biology. 10 study Physics and Chemistry, 9 study Biology and Chemistry while 8 study both Physics and Biology. Equal numbers study all three subjects as

  12. Physics

    Two sound waves are traveling through a container of unknown gas. Wave A has a wavelength of 1.2 m. Wave B has a wavelength of 3.6 m. The frequency of wave B must be __________ the frequency of wave A. a. one-ninth b. one-third c. the same as d. three

  13. Chemistry

    Calculate the standard free energy change at 25°c the following reaction 3Cu+2NO3+8H->3Cu+2NO+4H2O

  14. English

    As a school prefect of your school write a speech on what your school needs

  15. DYnamics

    Thank you Advance...;; Q: A body of mass 10 kg is moving over a smooth surface, whose equation of motion is given by the relation. s = 5t + 2t² where (s) is in metres and (t) in seconds. Find the magnitude of force responsible for the motion. Thank you

  16. math

    The value p varies directly with q^-1. If p=1/6 when q=5/8, what is the value of p when q=18? A)864/5 B)7/24 C)5/864 D)-8/135 I did the p=kq, and found p to be 24/5 but that's not a choice. Help!!

  17. unscramble

    If you rearrange the letters "CARNEF", you would have the name of? A) a dog B) a city C) a country D) a province

  18. Physics

    A ball is allowed to fall freely from certain heightn. What distance it covers in 1st second?

  19. Find an odd natural number x such that LCM (x, 40)

    Find an odd natural number x such that LCM (x, 40) = 1400.

  20. Government

    1. The U.S. Constitution's Article I, Section 1 created the office for the U.S. president. A) True B) False 2. The term of office for a House member is two years. A) True B) False 3. Two requirements for members of the House are that they must be 25 years

  21. Mathematics

    dy/dx+tanx tany=cosx secy

  22. Algebra

    The perimeter of the rectangle below is 74 units. Find the length of side AB . Write your answer without variables. DC (top) 4z-1 CB (right side) 3z+3 AB (bottom) unknown

  23. Essay

    Essay: How I surprised my friend on her birthday part. A birthday party is the one day a year, which is very special and unique to everyone in their life. It is a day that should be celebrated with lots of joys and some surprises. Basically, I thought I

  24. maths

    the gcf of two numbers is 3 and lcm is 180.if one of the numbers is 45,what is the other number?

  25. math

    A Ferris wheel has a maximum height of 245 feet and a wheel diameter of 230 feet. Find an equation for the wheel if the center of the wheel is on the​ y-axis and y represents the height above the ground. equation is ?

  26. Math

    Three different numbers are chosen at random from the set {1,2,3,4,5}. The numbers are arranged in increasing order. What is the probability that the resulting sequence is an arithmetic sequence?

  27. Math

    What are Fractions less than 1/2

  28. Definition

    What does residence phone number mean? does it mean like the house number of someone?

  29. physics

    A 10uf capacitor is charged from a 30v supply and then connected across an uncharged 50uf capacitor.Calculate a. The final potential difference across the combination b. The final and initial energies

  30. Language Arts

    Please help me with the following: Myths often function as a connection to __________, or the customs and beliefs of a group of people. I think the answer is phenomena, but I don't even know if that is correct. Please help me, any help will be appreciated.

  31. English

    Poetry is the journal of a sea animal living on land, wanting to fly the air. i not understand what he mean

  32. Trigonometry

    If the shadow of a building increases by 10 meters when the angle of elevation of the sun rays decreases from 70o to 60o, what is the height of the building?

  33. Chemistry

    1)How many protons and electrons are in a sulfate ion SO4^2- ? I know the answer is 48 protons and 50 electrons but i do not know how to get this from the ion. 2) What is the charge on a sulfide ion? The answer is -2 but im not sure why. Is sulfide always

  34. Physics

    an empty rd bottle weighs 60 grams but weighs 120 gram when completely filled with water when the bottle is completely with an unknown liquid it weighs 90 gram what will be the volume of the rd bottle

  35. Math

    Derek wants to determine the height of the top of the backboard on the basketball goal at the playground. He places a standard 12-inch ruler next to the goal post and measures the shadow of the ruler and the backboard. If the ruler has a shadow of 10

  36. Math Nunbers

    The sum of the digits of a positive three digit number Is 19. The tens digits is four less than twice the hundreds digit. The number is decreased by 99 when the digits are reversed. Find the number

  37. Maths

    Between 2000 and 3000 Odd number Digit in the tens place is 6 Digits in the ones place and the hundreds place are the same

  38. Maths

    A two digit number is formed by either substracting 17 from nine times the sum of the digits or by adding 21 to 13 times the difference of the digits .find the number

  39. Physics

    A package is dropped from a helicopter moving upward at 15 m/s. If it takes 16.0 s before the package strikes the ground, how high above the ground was the package when it was realeased?

  40. Anthropology

    Lecture, desks, class hours, and writing boards are all part of the class: a)stratification b)rank C)social situation d)status e)role The term mana is best defined as: a)a member of hierarchy of priests b)the implements used in magical ceremonies c)a

  41. math

    salil travels 9km towards east then8km towards north and finally 7km towards east . how far away is he from his original place?

  42. Physics

    An electric heater warms a large 0 degree Celsius block of ice at the rate of 200J/s . calculate the mass of the ice that melts in 10 minutes

  43. Math

    Paul is 20 years older than joy four years ago; the ratio of their ages was 7:3 find the present age of Paul

  44. chem

    Ka=1.8x10^-5. How do you calculate the value of pKa?

  45. math

    in a department store, there were a certain number of red t-shirts, blue t-shirts and yellow t-shirts. 3/7 of the t-shirts were red, 1/3 of them were blue, and the rest were yellow. If there were 20 more red t-shirts than blue t-shirts, how many yellow

  46. physics

    A convex meniscus lens is made of glass with refractive index, n= 1.5. The radius of curvature of the concave surface is 46.2 cm and the radius of curvature of the convex surface is 22.4 cm. a)Calculate the focal length of the lens. b)Determine the

  47. Physics

    Train A starts at 4 miles South of a bridge and heads North at a constant speed of 30 miles per hour. Train B starts 6 miles North of the bridge. a. What velocity must Train B have so that the two trains cross the bridge at the same time? b. If Train B

  48. Calculus

    A ladder 25 feet long is leaning against a vertical wall. If the bottom of the ladder is pulled horizontally away from the wall so that the top of the ladder is sliding down at 3ft/sec, how fast is the measure of the measure of the acute angle between the

  49. physics

    vector A has magnitude 8units and makes an agle of45°with the positive x-axis vector B also has the same magnitude of 8units and directed along the negative x-axis determine the magnitude and direction of A+B?

  50. Physics

    Water flows into a house at a velocity of 15 m/s through a pipe that has a radius of 0.40 m. The water then flows through a smaller pipe at a velocity of 45 m/s. What is the radius of the smaller pipe?

  51. statistics

    Three cards are drawn from a deck without replacement. Find these probabilities. a)all are jacks b)all are clubs c)all are red cards

  52. Electronics

    How long does it take to fully charge a 5µF capacitor in series witha 5 Mega Ohm resistor

  53. maths

    there are between 50 and 60 number of eggs in a basket. when loza counts by 3's there are 2 eggs left over, when she counts by 5's there are 4 eggs left over. How many eggs are there in the basket?

  54. Maths

    How to write y²+6y+9+4y⁴ in standard form

  55. physics

    an antifreeze solution is made by mixing ethylene glycol (density= 1116 kg/m^3) with water. suppose that the specific gravity of such a solution is 1.0730. assuming that the total volume of the solution is the sum of its parts, determine the volume

  56. ENGLISH

    SENTENCE PATTERN We painted the wall green yesterday

  57. chemistry

    MnO4–(aq) + Cl–(aq) Mn2+ + Cl2(g) (unbalanced) i. Write the reduction and oxidation half-reactions (without electrons). (.5 point) ii. Balance the equations for atoms (except O and H). (.5 point) iii. Balance the equations for atoms O and H using H2O

  58. math

    Pat deposits $600.00 in a saving accounts at a simple interest rate of 6% per year for five years. How much money will pat have earned in interest at the end of five years?

  59. math

    the fifth term of an arithmetic progression is 19,and the fourteenth term is 55. Find its first term

  60. english

    write a letter to your friend in another school telling him/her at least three ways you find life in the final year class is different from being in the class

  61. maths

    (x+3i)²=2yi Complex equation Answer plz

  62. Math

    1. Let (-7, 4) be a point on the terminal side of (theta). Find the exact values of sin(theta), csc(theta), and cot(theta). 2. Let (theta) be an angle in quadrant IV such that sin(theta)=-2/5. Find the exact values of sec(theta) and tan(theta). 3. Let

  63. Calc

    Find the length and width of a rectangle that has the given area and a minimum perimeter. Area: 50 square feet

  64. physics

    Two balls of equal mass collide and stick together as shown in the figure. The initial velocity of ball B is twice that of ball A. (Take è = 34°.) (a) Calculate the angle above the horizontal of the motion of mass A + B after the collision. 1 Units are

  65. Calculus

    An open box is formed from a piece of cardboard 12 inches square by cutting equal squares out of the corners and turning up the sides, find the dimensions of the largest box that can be made in this way.

  66. science

    A 3L sample of paint that has a density of 5 g/ml is found to contain 10% by mass Pb3N2(s). How many grams of lead were in the paint sample?

  67. math

    1. Which graph might show the temperature during a 24-hour period? (1 point) A B C D 2. Which graph might show the amount of money in a bank account if money is never taken out? (1 point) A B C D 3. Which graph might show the amount of money in a bank

  68. Science

    A 0.5kg cart connected to light spring for which the force constant is 20 Nm on horizontal frictionless air track. Calculate the total energy of the system and the maximum speed of the cart if the amplitude of the motion is 3.0cm

  69. SAT math

    The length of a rectangle was reduced by 10% and the width by x%. If the resulting dimensions reduced the area by 32.5%, what is the value of x? A) 25 B) 21 C) 18 D) 13 I don’t know what to do at all.

  70. Math

    There are 20 teachers and 705 students in Corey's school. What is the ratio of teachers to students? Answers: A. 4/141 B. 141/4 C. 5/141 D. 141/5 My Answer: A: 4/141 Please check if I am right. Thanks!

  71. math help

    The total saving in purchasing 30 13-cent lollipops for a class party at a reduced rate of $1.38 per dozen is: (A) $0.35 (B) $0.38 (C) $0.40 (D) $0.45 (E) $0.50 (F) $0.55 not just answer

  72. English

    Write a speech to be delivered on prize giving day as the senior prefect

  73. physics

    The 2.0 kg wood box in the figure(Figure 1) slides down a vertical wood wall while you push on it at a 45 ∘ angle. The coefficient of kinetic friction of wood on wood is μk = 0.200. What magnitude of force should you apply to cause the box to slide down

  74. MATH

    1. Terre Haute to Indianapolis to Bloomington measures 3 cm on the map. What is the actual distance? 100 km 150 km 200 km 250 km 2. Fort Wayne to Richmond to New Albany measures 6 cm on the map. What is the actual distance? (1 point) 300 km 250 km 350 km

  75. physics

    Determine the absolute pressure at the bottom of a lake that is 13.3 m deep. The acceleration of gravity is 9.8 m/s 2 and atmospheric pressure is 1.01 × 10 5 Pa . Answer in units of Pa

  76. Math

    A bus service center has 2 feed services that start together at 8 a.m. Bus A leaves at 15 minutes interval, while bus B leaves at 20 minutes interval. On a particular day , how many times do both services leave together from 8 a.m. to 11 a.m.?

  77. geometry

    Two sides of a triangle have lengths 4 and 7. Which of the following can NOT be the length of the third side? A. 4 B. 7 C. 11 D. 5

  78. Calculus

    The area bounded by the curve y^2 = 12x and the line x=3 is revolved about the line x=3. What is the volume generated?

  79. physics

    a ball is trough with initial velocity ui=(10i+15j)m/s when it reaches the top of trajectary negelecting air resistance what is its velocity and acceleration

  80. Computer

    Write an algorithm to calculate the percentage of a student.

  81. Physic

    A spring 20cm long is stretched to 25cm by a load of 50N.What will be its length when stretched by 100N assuming that the elastic limit is not reached?

  82. US Government

    people who believe voting is important have high political ...? what clue:(8-letter word) ----c-c-.

  83. Mathematics

    An aeroplane leaves an airport A and flies on a bearing 035°for 1.5 hours at 600km/hr to airport B It then flies on a bearing 130° for 1.5hours at 400km per hour to an airport C calculate the distance from C to A and the bearing of C from A with the

  84. Math

    A particle moves with a velocity of v(t)=3cos(2t) m/s along an axis. Find the distance traveled by the particle over the time interval 0 is less than or equal to "t", which is less than or equal to (pi/8)

  85. General Chemistry

    At STP, a 5.00L flask filled with air has a mass of 543.251g. The air in the flask is replaced with another gas and the mass of the flask is 566.107g. The density of air is 1.29g/L. What is the gas that replaced the air?

  86. physics

    at t=0, a particle moving in the xy plane with constant acceleration has a velocity of vi=(3.00i-2.00j) m/s and is at the origin. At t=3.00s, the particles velocity is v=(9.00i+7.00j). Find (a) the acceleration of the particle and (b) its coordinates at

  87. English

    As the senior prefect of your school, you have been invited to tell the parent teacher association what your school need most.write your speech.

  88. Chemistry

    Calculate the volume occupied by 10^22 molecules of a gas at 300K and 760mm pressure. Step by step explanation please.

  89. maths

    I am a four digit number.me and two times me together make the largest four digit number.who am i?

  90. Physics

    which of the following is NOT true about the path of a cannon ball launched horizontally from the earth's surface if air resistance is neglected? a. the cannnonball has a uniform horizontal velocity b.the total velocity of the cannon ball increases as a

  91. Syllables

    How many syllables are in chocolate? 2 or 3?

  92. Calculus

    Write the composite function in the form f(g(x)). [Identify the inner function u = g(x) and the outer function y = f(u).] (Use non-identity functions for f(u) and g(x)). y = tan(x^5) (f(u),g(x))=(?) I thought the answer would be (tan(x),x^5) but it turns

  93. Physics

    If a man weighs 900 N on the earth, what would he weigh on jupiter, where acceleration due to gravity is 25.9 m/s^2?

  94. chem

    When ionic salt is dissolved in water the ions CO3 and K+ are formed? KCO3 K2CO3 K(CO3)2 K3CO2 I think its the second one but I don't know where the 2 comes from?

  95. science

    a concave mirror has a radius of curvature of 0.4 m find the position and the size of the image of an object 0.2 m high placed 0.8 m infront of the mirror

  96. ALGERBRA,PLEASE HELP!!!!!!

    Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (–1, 2) and (3, –3). (1 point) A) (–2, 4) and (6, 6) B) (2, 4) and (6, 6) C)(–2, 4) and (6, –6) D)(2, –1) and (–3, 3) 2. Given a scale factor

  97. Ratios of Similar Figures

    1. Write the following ratio in simplest form: 32 min : 36 min a. 8 : 9 b. 8 : 36 c. 32 :9 d. 128 : 144 2. In a sports equipment locker, there are 81 balls and 45 baseball mitts. Write the ratio of balls to baseball mitts in simplest form. a. 9 : 5 b. 10 :

  98. Science

    a sample of Ca3(PO4)2 contains 3.1g phosphorus then the weight of Ca in the sample is ?

  99. Pre-calculus

    Enter the interval equivalent to 2 < x ≤ 5 or x > 7

  100. Chemistry

    Calculate the oxidation number of sulphur in AL2(SO4)3