# Jeconiah

Popular questions and responses by Jeconiah
1. ## Maths

Bill and Steve decide to spend the afternoon at an amusement park enjoying their favorite activities, the water slide and the gigantic Ferris wheels. Their tickets are stamped each time they slide or ride. At the end of the afternoon they have the

2. ## Maths

Margie is responsible for buying a week's supply of food and medication for the dogs and cats at a local shelter. The food and medication for each dog costs twice as much as those supplies for a cat. She needs to feed 164 cats and 24 dogs. Her budget is

Find the roots of x3-x2-10x-8=0

4. ## Chemistry

Calulate the volume of carbon dioxide produced when 0.5 tonnes of iron are produce.When iron oxide is heated with carbon monoxide, pure iron and carbon dioxide are formed.

5. ## Physics

A model helicopter of mass 5kg rises vertically from rest to a height of 60m with a constant acceleration in 10 seconds. Calculate the total thrust with which the helicopter rises.

6. ## Chemistry.

Calculate the volume of carbon dioxide produced when 0.5 tonnes of iron are produced. When iron oxide is heated with carbon monoxide, pure iron and carbon dioide are formed. Answer: 500000g/112g/mol =?/3 = 13392.9L

7. ## Math

An aeroplane needs to fly due east from city A to city B at a speed of 400km/hr. However a 50km/hr wind blows constantly from the north. In what direction must aeroplane head and at what speed must it travel?

8. ## Chemistry-stoichiometry ...help!

Calculate the volume of carbon dioxide produced when 0.5 tonnes of iron are produced. When iron oxide is heated with carbon monoxide, pure iron and carbon dioxide are formed. Ans: 500000g/112g/mol= 13392.9L

In a fume cupboard molten lead(ii) bromide is electrolysed using graphite electrodes. Write half-equations for the reaction at the (i).cathode (ii). Anode (iii). Overall equation (states required).

A piece of wire 168cm. long is to be cut into two pieces, each to be bent to make a square. The lenght of a side of one square is to be 2cm. greater than the lenght of aside of the other. What is the area of the smaller square? Ans= 80

11. ## Chemistry-stoichiometry ...help!

Calculate the volume of carbon dioxide produced when 0.5 tonnes of iron are produced. When iron oxide is heated with carbon monoxide, pure iron and carbon dioxide are formed. Ans: 500000g/112g/mol= 13392.9L

12. ## Maths

Solve for x: log5(x-2)+ log5 (x-4) = log6(x-1)

In a fume cupboard molten lead(ii) bromide is electrolysed using graphite electrodes. Write half-equations for the reaction at the (i).cathode (ii). Anode (iii). Overall equation (states required).

14. ## Maths

Solve for X: log4(3x-7)^2 = 10

15. ## Chemistry

An aqueus solution of sodium mitrate(NaNO3) contains 0.85 grams of sodium nitrate and its concentration is 0.1mol L^-1. What is the volume. in millilitres, of the sodium nitrate solution?

16. ## Chemistry

Calculate the mass of lithium hydroxide that must be added to 50ml of water so that it may react exactly with 5ml solution of 1.5M nitric acid.

17. ## Math

what is the longest river in the world?

18. ## Math

log(x-2) +log8 (x-4) =log6 (x-1)

4a^2+9b^2+25c^2-12ab+20ac-30bc divided by 2a-3b+5c.

20. ## Algebra

simplify: [(2x^2+5x-6)/(5x^2+7x-6)]*[(20x^2-7x-3)/(6x^2-25x+4)]/[(4x^2-11x-3)/(6x^2-19x+3)]

Solve this pair of equations by the graphical method: 4x+y=9 , 3y-2y=49

22. ## Chemistry

2.8g of iron(¡¡) reacted with 100ml of 2M sulfuric acid. A.Which reactant is in exces? B. What volume of hydrogen gas is produce at RTP? C. How many moles of iron sulfate is produced? D. How many atoms of hydrogen gas were evolved?

23. ## Math

Find the exact value of sin 2teta=2 sin teta cos teta given that cos teta =2/3, 0

24. ## Physics

Two forces of 4 N and 6 N act at a point along the same horizontal line. What is its resultant force?

Solve for x: 9/28 + 3/x+2 = 3/4.

26. ## Chemistry

2.8g of iron(¡¡) reacted with 100ml of 2M sulfuric acid. A.Which reactant is in exces? B. What volume of hydrogen gas is produce at RTP? C. How many moles of iron sulfate is produced? D. How many atoms of hydrogen gas were evolved?

27. ## Chemistry

When sulfuric acid reacts with ammonia solution an ammonium salt and water are produced. Calculate the volume of 3mol/dm3 of acid required to react exactly with 25ml of a 2.5mol/dm3 of ammonia solution.

29. ## Maths

Slove for x: ln (x^2 -6x -16) = 5

Solve this pair of equations by the graphical method: 4x+y=9 , 3y-2y=49

How long will it take for a \$3000 savings account to double its value at a simple interest rate of 10%?

32. ## Maths

Solve for x: 6log(x^2 +1) - x = 0

33. ## Maths A

Sketch the graph of y=x^2-x and find the minimum value of y.

Use substitution method to solve x-2y-5=0, 3x-5y=8

If cos x >0 ans sin x= -4/5, then tan x=?

36. ## Chemistry

Calculate the mass of ammonia salt that would remain if the solution were evaporated to dryness. When sulfuric acid reacts with ammonia solution an ammonium salt is produced. 2.5M * 0.025L/2=x/132 =4.125g

37. ## Chemistry

Calculate the mass of lithium hydroxide that must be added to 50ml of water so that it may react exactly with 5ml solution of 1.5M nitric acid.

38. ## Chemistry

Calculate the mass of ammonia salt that would remain if the solution were evaporated to dryness. When sulfuric acid reacts with ammonia solution an ammonium salt is produced.

39. ## Chemistry

Calculate the mass of lithium hydroxide that must be added to 50ml of water so that it may react exactly with 5ml solution of 1.5M nitric acid.

40. ## Problem Solving! please I need more help!!

How long will take for a \$3000 savings account to double its value at simple interest rate of 10%?

41. ## Algebra

Find the quotient and remainder when: (x+1)+(x-1) divided by [1-(x+1)(x-1)]

42. ## Algebra

Find the quotients and remainder when: 4a^2 + 9b^2 + 25c^2 - 12ab + 20ac - 30bc divided by 2a - 3b + 5c

43. ## Algebra

(3a^2+6ab-a-2b)/(9a^2-6a+1)

Ethanol is produced by the action of yeast (catalyst) on sugar cane juice. (1).What is specific name of this reaction? (2.) Write a simple word equation of this reaction.

Solve for x: 9^x-3^x-8=0

Solve for x: 9^x-3^x-8=0

The first term of the sequence is -168 and every term after the first is 8 more than term immediately proceeding it. Find the 88th term.

48. ## Please Ms Sue Help me! Alhorithm

Solve for the value of x: 6log(x^2+1)-x=0. I can't even solve it.

49. ## Maths

Show proof of deriving the Quadratic Formula from the Quadratic Equation ax^2 + bx + c = )

52. ## Physics

Define linear momentum.

53. ## Maths A

Write down the period of the function y=cos x

54. ## Maths A

When 3square root of 5= square root of a, find the value of a.

55. ## Maths

Solve this using elimination method: 4x-3y=-4

Ethanol is produced by the action of yeast (catalyst) on sugar cane juice. (1).What is specific name of this reaction? (2.) Write a simple word equation of this reaction.

57. ## computer science

What exactly do computer scientists do?

The first term of the sequence is -168 and every term after the first is 8 more than term immediately proceeding it. Find the 88th term.

59. ## Chemistry

Calculate the mass of ammonia salt that would remain if the solution were evaporated to dryness. When sulfuric acid reacts with ammonia solution an ammonium salt is produced.

60. ## Chemistry

2.8g of iron (¡¡) reacted with 100ml of 2M sulfuric acid. Which reactant is in excess? And what volume of hydrogen gas is produced at RTP?

solve for the value of x: 6log (x^2+1)-x=0. please help me because I do not have any idea in this topic.

62. ## Inequalities.please a needy help here!!

solve and graph y>2x-1

63. ## Maths

Simplify the following: (54^1/4)/ (6^3/4)(12^-1/2)

64. ## Algebre

simplify: {[3x^2+10x-8]/[5x-15]}/{[x^3+64]/[x^2-9]}

65. ## Chemistry

When secondary alcohol oxidized it produces alkanes. Draw the structure of 2,2 dimethyl 3-butanol + oxygen and give the names for it.

66. ## Math

The displacement of a particle is given by: x=t^3-7/2t^2+2t-1. Find the particles initial displacement. And find when the particle is at rest.

67. ## Maths A

Find the coordinates of the vertex of the parabola:y=x^2-8x+2

What is the MAIN reason for storing sodium metal in mineral oils?

Formulate the acronym for "READING THROUGH PARTNERSHIP"

If cos x >0 ans sin x= -4/5, then tan x=?

Is this chemical formula (Fe2O3) iron oxide?

72. ## Chemistry.

Is this formula (Fe2O3) iron oxide?

73. ## Chemistry

28g

Over a three-year period, the total interest paid on a \$4500 loan was \$1620. What was the interest rate?

In order to earn \$1,000 in interest over 2 years at an annual rate of 4%, how much principal must be put into a saving account?

76. ## Maths

Show proof of deriving the Quadratic Formula from the Quadratic Equation ax^2 + bx + c = O

77. ## Maths

Find the vakue of x: (1)logx2 = 2 (2) log3x^2 = -1

solve: 2x^2-3x+5 divided by 2x-1

79. ## Algebra

solve 2x^2-5x-1 divided by x-3

simlify the following to the lowest terms: (a) [x^2-y^2]/[x^2+y^2] (b) [3a^2+6ab-a-2b]/[9a^2-6a+1] (c) [x^4-y^4]/[x^3-y^3] (d) [36x^3y^4z]/[64x^5y^2z^3]

81. ## Math

Find the exact value of the product sec teta csc teta given that sin teta=3/5 and cos teta =4/5

The sum of three times a first number n twice second number is 8. If the second number is subtravted from twice the first number, the result is 3, find the numbers.

83. ## Maths A

A cylindrical can is open at both ends. It is of height 14 cm and radius 4.2 cm. Find the external surface area of the can.

84. ## Maths A

When 3square root of 5= square root of a, find the value of a.

What is the chemical formula for alluminium hydroxide?

What is the chemical formula for alluminium hydroxide?

Solve for x: 9/28 + 3/x+2 = 3/4.

The vertices of a triangle are (-2,3),(2,1) and (2,7). What is the area of this triangle?

Find the coordinates by solving and graphing the equation : -x^2-x+30=0

90. ## Polynomials

solve (2x)/(-x^2 + 2)

91. ## Polynomials..quick help....

if (x-7) and (x-4) are the factors of px^3 + qx^2 - 5x +84, find the values of p and q.

simplify: (x^2-y^2)/(x^2+y^2)

93. ## Algebra

simpliy the following: (a) {[4x^2-49]/[8x^3+27]} *{ [4x^2+12x+9]/[2x^2-13x+21]} (b) {[x^2+x-6]/[x^2+7x-6]}*{[20x^2-7x-3]/[6x^2-25x+4]}*{[4x^2-11x-3]/[6x^2-19x+3]}

solve 6x-2x^3 with first principal

95. ## social science

what is deepest lake in the world?

96. ## Math

Let p(x)=x^3+4x^2+x-6. Find a polynomial g(x) can be (remainder) r, such that p(x) can be expressed in the form p(x)=(x-2)g(x)+r

When the object is placed beyond 2f, where should you put your eyes for getting the clear image of it?

98. ## Quick help! Algebra

simplify: (9x^2-16/x+1)/(4x-3)