Questions Asked on
June 16, 2020

  1. Mathematics

    From points A and B on level ground, the angles of elevation of the top of a building are 25° and 37° respectively. If |AB| = 57 m, calculate, to the nearest metre, the distances of the top of the building from A and B if they are both on the same side

    asked by Saul
  2. Physics

    A uniform half metre rule is freely pivoted at the 15cm Mark and it balanced horizontally when a body of mass 40g is hung from the 2cm Mark. calculate the mass of the rule

    asked by Deborah
  3. Algebra

    48 is the sum of 20 and Jenny score use the variable j to represent Jenny score translate the sentence into an equation

    asked by Jay
  4. World History

    How did the Renaissance contribute to the Age of Discovery? Select all that apply. A.It eliminated Christianity from society and made Europeans more open-minded. B.It contributed to technological advancements that helped in navigation. C.It inspired a

    asked by Alex Doberman
  5. Science

    1) Study the scenario. System 1 has a large number of particles, moving slowly on average. System 2 has a smaller number of particles, but they are moving faster on average. Which system has a higher temperature? System 2 has a higher temperature because

    asked by Lyssa
  6. Science

    Scoop ice cream into 8 - 1/2 cup sized balls. Place on baking sheet and freeze until firm, about 1 hour. 3 egg whites 1)What is the radius of each ball? You can either approximate based on the volume measurement of each ice cream ball in the recipe 118

    asked by Ana
  7. World History

    What was King Henry VIII’s outward motivation for breaking away from the Roman Catholic Church and instituting the Church of England? a,King Henry VIII disapproved of the outcomes of the Council of Trent and decided to form the Church of England. b.King

    asked by Alex Doberman
  8. maths

    how do we solve Mary wants to make cookies.she needs 3/4 of a cup of flour per batch of cookies,if Mary has 6 cups of flour,then how many batch of cookies can she make?

    asked by Juliet
  9. Science

    Calculating diffusion coefficient You want to make meatballs according to a recipe that says to marinate the meatballs in garlic and soy sauce before baking them in the oven. You prepare the marinade and immerse the meatballs, which are 6 cm in diameter,

    asked by Ana
  10. Mathematics

    Express each ratio as a fraction in its lowest terms 18hours to 2days

    asked by Janet
  11. World History

    Why did Europeans seek a direct route to trade with Asia? A.They wanted to bypass their Muslim rivals in the Middle East. B.They wanted to purchase tea and spices when they were freshest. C.Chinese merchants would only trade directly with Europeans.

    asked by Alice Springman
  12. Geometry

    For the acute angles in a right triangle, sin (4x)° = cos (3x + 13) °. What is the number of degrees in the measure of the smaller angle

    asked by John Anderson
  13. mathematics

    If x-3 is directly proportional to the square of y and x=5 when y=2 ,find x when y=6

    asked by david t
  14. geography

    Map Reduction and Enlargement 1). If the Scale of the original map is 1:50,000 and ask to draw a new map of 1:150,000. By how many times are you going to enlarge or reduce the map? 2). If the map extract has a scale of 1:100,000,how many times are you

    asked by Dana Sofa
  15. Chemistry

    calculate the pH of 0.025 mol dm^3 trioxonitrate (v) solution

    asked by Christina
  16. Physics

    An athlete swims the length if 50m pool in 20s and makes the return trip to starting point in 22s.Determine the average speed and velocities a. the first half of the trip b.second half of the trip c. Round trip

    asked by Rose
  17. Science

    What is the value of potential energy of a mango on a tree before it fells?

    asked by ANKOMAH
  18. mathematics

    A train is going at 1/3 of its usual speed and it takes an extra 30 minutes to reach its destination. Find its usual time to cover the same distance.

    asked by Mila Sofa
  19. World History

    How did the establishment of the Church of England change government? A.The Church of England did not collect taxes like the Roman Catholic Church. B.The Church of England ruled over court cases, unlike the Catholic Church of England. C.The head of state

    asked by Alex Doberman
  20. Chem

    Which of the following is not an example of a neutralization reaction? A HCl + NaOH NaCl +H2O B 2 NaOH + H2CO3 Na2CO3 +2 H2O C H2SO4 + 2 NH4OH (NH4)2SO4 + 2 H2O D 2 AgNO3 + Zn 2Ag +Zn(NO3)2 A?

    asked by Anonymous
  21. Calculus

    Write the symmetric equations of the line passing through A(3, 2, -1) and B(2, -1, -2)

    asked by Calchelp
  22. mathematics

    If x-3 is directly proportional to the square of y and x=5 when y=2,find x when y=6.

    asked by david t
  23. Chem

    According to the Arrhenius Theory of acids and bases, a base is: A A substance that decrease the amount of hydroxide ions present. B A substance that increases the amount of hydroxide ions present when it is dissolved in water. C A substance that increase

    asked by Anonymous
  24. Chem

    Which of the following are true regarding acid-base titrations? A They are used to determine the concentration of an unknown acid or base. B The acid or the base must be a standard solution with a known concentration C The standard solution is titrated

    asked by Anonymous
  25. math

    (2, 3),(0, 5),(1, -2),(-6, 0),(0, -5),(0, 0), (-1, -1), (-4, 3),(4, 0),(-5, -6). Which points have y-cordinate+2?

    asked by robart
  26. Calculus

    Find the area of the triangle whose vertices are A(1,0,1), B(2,-1,3), C(5,2,2).

    asked by Anonymous
  27. world history

    . Which phenomenon did triangular trade most directly encourage?

    asked by Dorian Fields
  28. Calculus

    Find a vector perpendicular ( = normal) to the line 2y = 5-3x in the xy-plane.

    asked by Anonymous
  29. Calculus

    Find the distance from the point P(5,10) to the line 2y = 5-3x in the xy-plane.

    asked by Anonymous
  30. science

    A boy of mass 10 kg runs up a set of step of total height 3 meters what is the work done against gravity

    asked by Precious
  31. English

    You wake up suddenly and heard someone shouting for "Help Help"describe what you see.

    asked by Andrews
  32. Math

    Given that x= 3a+ 5/a+2. For what value of a is x not defined??

    asked by Anita
  33. Mathematics

    Find the midpoint of the line segment with end coordinates of: (1,7) and (3,−2) Give coordinates as decimals where appropriate.

    asked by Michael
  34. Chemistry

    1◇- You are asked to prepare 1.10-3 M 15 mL Potassium tri oxalato chromate (III) solution for conductivity measurement studies. Describe the preparation of the solution by making the necessary calculations? 2◇- Calculate the splitting energy of [Co

    asked by Hiba
  35. mathematics

    X and Y are two stations which are 320 miles apart. A train starts at a certain time from X and travels towards Y at 70 mph. After 2 hours, another train starts from Y and travels towards X at 20 mph. At what time do they meet?

    asked by Sadie Sofa
  36. Mathematics

    Find the midpoint of the line segment with end coordinates of: (−3,−1) and (−4,2) Give coordinates as decimals where appropriate.

    asked by Alexandra
  37. algebra

    a. 5(z + 1) = 3(z + 2) + 11 Solve for Z b. 7(x+4)-2[x-3(5+x)]=2/3(x-6)

    asked by Mike Sofa
  38. chemistry

    What is the molecular weight of estradiol if 0.2255 mol of sample weighs 61.42 g?

    asked by sina
  39. Mathematics

    what is the probability of picking friday at random?

    asked by Shaylo cursor
  40. Calculus

    Find the volume of the box with the vectors A = 2i + j + k , B = 3i - 4j+ 2k , C = i - j+ 2k as edges.

    asked by Anonymous
  41. mathematics

    Alecia deposited $500 in a savings account at 5% compounded semiannually. What is her balance after 6 years? Please solve this question with steps.

    asked by Angelina
  42. chemistry

    1◇- You are asked to prepare 1.10-3 M 15 mL Potassium tri oxalato chromate (III) solution for conductivity measurement studies. Describe the preparation of the solution by making the necessary calculations? 2◇- Calculate the splitting energy of [Co

    asked by Hiba
  43. Math

    Find the derivative of each of the following functions using the product rule. you do not have to simplify your answer. A) f(y) = (1/y^2 - 3/y^4)(y+5y^3) B) H(u) = (u - √u)(2u^2+1)

    asked by anonymous
  44. Calculus

    Determine the Scalar equation of the plane that passes through the point (2, -4, -3), and contains the vectors a = [-3, 5, -1] and b = [2, -4, 6]

    asked by Calchelp
  45. Calculus

    I know this is a repost and i tried to do this but i don't know how to do it. Find the derivative of each of the following functions using the product rule. you do not have to simplify your answer. A) f(y) = (1/y^2 - 3/y^4)(y+5y^3)

    asked by anonymous
  46. Calculus

    3i-2j+k can be written as linear combination of which of the following vectors? a){(2,0,0,) (0,1,0,) ( 1,0,1)} b){(3,0,0) (-2,0,0) (1,0,0)} C){(3,2,1) (6,4,2) (-3,-2,-1)} d) {(1,0,0) (0,1,0) (2,0,0)} I got c) but I'm not sure if that's right bc idk if I

    asked by bo
  47. chemistry

    what are the products of bacl2.2h2o + kcl???

    asked by Shehan
  48. mathematics

    The thickness of a book varies directly with thee number of pages in the book.A book is 1.8 cm thick and contains 350 pages .What is the thickness of the first 84 pages of the book?

    asked by david t
  49. physics

    1. Sin δ = ( cos δ + 200 )

    asked by joye
  50. geography

    Calculate the gradient of a hill having a rise or vertical interval is 300 m while the run or horizontal equivalent is 7 cm. Note: The scale is the map is 1:200,000.

    asked by Mila
  51. physics

    A car is moving at a constant speed of 20 ms-1. The force retarding its motion is 500 N. Calculate the engine power of the car required to maintain the motion.

    asked by Dana Sofa
  52. mathematics

    I start with any 2 consecutive integers. I square each of them, then I add the 2 squares together. Construct an algebraic expression showing this

    asked by cccccc
  53. physics

    The coordinates of an object moving in the xy plane vary with time according to the equations x = -6.85 sin ωt and y = 4.00 - 6.85 cos ωt, where ω is a constant, x and y are in meters, and t is in seconds. a. Determine the components of the velocity of

    asked by Mila
  54. Math

    A petrol station finds that its daily sales, in litres, are normally distributed with mean 4520 and standard deviation 560. (a) Find on how many days of the year (365 days) the daily sales can be expected to exceed 3900 litres.

    asked by Mila Sofa
  55. physics

    during a collision with a wall lasting from t=0 to t=2s,the force acting on a 2-kg object is given

    asked by Anonymous
  56. mathematics

    If a person walks at 4 mph, he covers a certain distance. If he walks at 9 mph, he covers 7.5 miles more. How much distance did he actually cover?

    asked by Joye Sofa
  57. algebra

    4y(x - 2)/45y = 6/3x( 3y+4x ) find x and y.

    asked by Mike Sofa
  58. math

    in a Cartesian graph, suppose you are given the coordinates of a point. you do not want to plot the point. How can you tell which quadrant the point will be in?

    asked by robart
  59. Math

    Jazzmine kept a log of the movement of a troop of ants marching on an a anthill, as represented by the graph below. During which interval was the marching speed of the ants the greatest? During which intervals were the average rate of change the same?

    asked by Janet
  60. Mathematics

    3 count AB and C are such that the distance between A and B is 50km and the distance between A and C is 90km. if the bearing of B from A is 075 degree and the bearing of C from A is 310 degress. find the a distance B and C find the distance between B and C

    asked by Anonymous
  61. Chem

    Hello, I had a question regarding the percent error formula. When I google the formula different formulas pop up either being [Experimental-Theoretical] / Theoretical * 100 or [Theoretical-Experimental] / Theoretical * 100. Which one is correct?

    asked by Anonymous
  62. Math

    Lin’s father is paying for a $20 meal. He has a 15%-off coupon for the meal. After the discount, a 7% sales tax is applied. What does Lin’s father pay for the meal? Explain or show your reasoning.

    asked by Anna
  63. Calculus

    Find the intersection of the line in three dimensions whose equation is x/2 = (y-1)/3 = z/4 and the plane x + 2y + 3z = 5.

    asked by Anonymous
  64. Calculus

    Determine the Scalar equation of the plane that passes through the point (2, -4, -3), and is parallel to the plane 3x - 2y -4z - 9 = 0

    asked by Calchelp