# Collins

Popular questions and responses by Collins
1. ## ALLIED HEALTH

The main purpose of a peer review committee is to A. identify activities that suggest guidelines aren’t being followed. B. establish procedures for confidentiality of incident reports. C. examine the work habits of individual employees who have access to

2. ## Word problem help plz

The sum of the age of father and son is 99.if the age of the son is added to the inverted age of the father,the sum is 72.if the inverted age of the son is subtracted from the age of the father.the difference is 28...what are there age? plz help i do not

3. ## Simultaneous equation need help

The following simultaneous equations are written in base two 11x+10y=10001 10x-y=10 solve and live your anser in base two?? plz help tnx

4. ## Maths trigonomentry

3cosx+4sinx=5 what is x is too difficulat form me to solve? Shw working please

5. ## Help!!! Maths number base

If 321 base 4 is divided by 23 base 4 and leaves a remainder 'R' what is the value of 'R' ?

6. ## Maths/physics need help agn

A hand bag containing some loads weighing 162n is carried by two student, each holding the handle of the bag next to him..if each handle is pulled 60degree to the vertical find the force of each student? Help plz

7. ## Area of a triangle plz help

|BM|,|CN| are altitude of a triangle ABC if AB=3.5 AC=3.2 BN=2.1 calculate the area of the triangle and hence find |CN|.......show working plz i don't no it

8. ## Science

Two boys A and B are at two diametrically opposite points on a circle. At one instant the two start running on the circle; A anticlockwise with constant speed v and B clockwise with constant speed 2v. In 2 minutes, they pass each other for the first time.

9. ## Maths/physics

A catapult used to hold a stone of mass 500g is extended by 20cm with applied force .f if the stone leaves with a velocity of 40m/s,what is the value of f? Help plz

10. ## Algebra help plz

If € , ß are the roots of the equation 2x^2 + 4x - 3 = 0 and €^2 , ß^2 are the roots of the equation x^2 + px + q = 0, find the value of p.

11. ## Maths sum of digit help!!!

What is the sum of the digit in 4444^4444

12. ## Function plz help!!!

If a function u(x,y)=arctan(y/x) deduce the laplace equation of the function. plz show working i don't no where to start from...plz thanks

13. ## Algebra word problem.....so difficult

Last three year kemi who happens to be my sister was 2wice as old as my lovely brillant primary school friend femi,last three years when i was two less than femi age now.the sum of kemi age in the next 9years and femi age noe and my age in the next three

14. ## Calculus i need help plz plz

If y=ws^3/d^4 find the % increase in 'y' when 'w' increases by 2% and 's' decreases by 3% and 'd' increasee by 1%...... There a little error in the first question i post here it is plz i need the working and explanation

15. ## Defective probability i need help

If 3% of electric bulb produced by a company are defective find the probability that in a sample 100bulbs (a) 0 (b)1 (c)2 (d)3 bulbs are defective??

16. ## Simultaneous equation

X+y+z=1......(1) x^2+y^2+z^2=35........(2) x^3+y^3+z^3=97.........(3) solution but from 3 (x^3+y^3)=(x+y)^3-3xy(x+y)......(4) puting 4 into 3 bck (x+y)^3-3xy(x+y)+z^3=97.......(5) now from 1 x+y=1-z......(6) putin 6 into 7 we have (1-z)^3-3xy(1-z)+z^3=97

17. ## maths

A car is moving along a straight road. The graph below shows how the speed varies with time. "'0 W WCl. (/) time - Which of the following graphs represents the distance covered by the car with time? I 1. t 2. 0> U 0> C o .l9 c '" .l9 ii .!!! "0 time - time

18. ## Word problem help plz

How many pound of cream containing 12% butterfat must be added to 1800lb.of milk containing 2% butterfat to obtain milk having 3% butterfat? Plz help me

19. ## Maths need help trigonomentery

Two circular flower beds have a combined area of (29¥)/2m^2. The sum of the circumferences of the flower beds is 10¥m. Determine the radius of each bed........ Happy new year to all mrs sue steve,reiny,damon...and to all my jishka helper i need help plz

20. ## Maths tangent help me damon or steve help

The line y=3x+k is a tagent to curve x^2+xy+16=0 find the possible value of k? plz help me i don't no it

21. ## Chemistry help

The earth moves round the sun in one year.the average earth-sun distance is 1.5*10^11m given that the mass of the earth is 5.98*10^24kg (a):the angular momentum of the earth??? (b):kinetic energy of the earth motion?? (c):kinetic energu of the earth motion

22. ## physics

In the figure, a radar station detects an airplane approaching directly from the east. At first observation, the airplane is at distance d1 = 350 m from the station and at angle θ1 = 31° above the horizon. The airplane is tracked through an angular

23. ## calculus i need help also

If y=2x^2-21x^2+60x+6 what is the value of x? dx^2/dy^2=0

24. ## Integration need help

Integrate (6x^2-cos(2x))dx??

25. ## Perumutation

In how manys ways can nine women be sitted on a round table if two paricular women must not sit next to each other??

26. ## Math

Find the total amount he receive in year in which he sell goods worth \$9376000 and travel 10,000km? Pls help

27. ## Physics

A body of mass 10kg is to be raise from the bottom to the top of an inclined plane 5m long and 3.0m off the ground at the top assuming a frictionless surface,how much work must be done by the force parallel to the plane pushing the block up to a constant

28. ## physics

A train at station P accelerate uniformly from rest until it attain a speed of 100 k/h. It then continues at the speed for some time and decelerate uniformly until it comes to a stop at a station, Q 60 km from P. The total time taken for the journey is an

29. ## math

Using elimination method solve 2/x-3/y=1, 8/x+9/y=1/2

30. ## Maths

Solve for following applying spherical trigonometry... 1.Papua New Guinea (37° 45'N, 122°27'W)(since course was 260°) distance travelled =2250nm. A) use law of cosine to calculate a and thus altitude:or B) use law of sine to calculate N and thus

31. ## Literacy exam

What is expanded academic ASAP and what does it do

32. ## HISTORY

explain the course of religious wars in buganda

33. ## MATH

asolid metal cube of side 10cm is melted down and recast as solid metal sphere.calculate the radius of the sphere.Take Pie=3.142

34. ## sir steve sir reiny any 1 plz help me maths har

Question. Find the greatest common divisor d of 159 and 51, and find integers x and y solving the equation 159 x + 51 y = d . Answer. d = 3. The extended Euclidean algorithm gives x = 9 and y = -28. (There are other solutions for x and y; these are not

2+3Log a

36. ## Precalculus

m varies directly as the cube of n and inversely as g

37. ## maths

A car is moving along a straight road. The graph below shows how the speed varies with time. "'0 W WCl. (/) time - Which of the following graphs represents the distance covered by the car with time? I 1. t 2. 0> U 0> C o .l9 c '" .l9 ii .!!! "0 time - time

38. ## maths

An ant is crawling along the x-axis such that the graph of its position on the x-axis versus time is a semi-circle (see figure). The total distance covered in the 4 s is x[m] 4 t [sI

39. ## question !!!

sir steve have been looking for that book you said i should buy over the net the whol,night to get,the raw file study them but i could not see can you direct me to,a,link

40. ## logarithm help!!!!

k/k^5=logk find k

41. ## expansion help!!! maths

write down the expansion of (1+x-x^2)^6 in Ascending other please show full working!

42. ## binomial expansion help!!!

in the expansion of (1+x)^(n+1) the coefficient of x^4 is 6k and in the expansion of (1+x)^(n-1) the coefficient of x^2 is k.find the value of k and n, for n>2???

43. ## another integral...help

integrate:xtan^-1/(1+x^2)^2....working plz

44. ## integration i need

integration i need help integrate:(1-e^x)^5/e^4x..plz show full working

45. ## Confused bat!!! English

My english teacher told me that there is a difference between NO and IDON'T NO he said that we should exaplain with refrences am confuse but they are the same

46. ## mechanics

please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of

47. ## mechanics

please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of

48. ## mechanics

please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of

49. ## physics

(1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of the earth (r>Re), where Re is the

50. ## physics

(2). Determine the velocity which a body released at a distance r from the center of the earth when it strikes the earth surface.

51. ## Word problem

earth and cement block filling a box weighs 390mlb.the block weigh 2.4times as much as water and earth weighs 1.5times as much as water.water filling the box weighs 2000lb.find the weigh of the cement block.bl? plz help help help!!!! Show work

52. ## Minimum and maximum value

Let f(x) be a decreasing the function defined for x>or=0 and f(2a^2+a+1)

53. ## Trigonomentery Maths to difficult help me

Given that cosZ=L where z is an acute angle.find and expression of (cotz-cosecz)/(secz+tanz)? plz help help help!!!! Show work

54. ## Gratitude for my helper

Sir steve mrs reiny sir bobpursely sir damon ms sue..... Thank you very much you guyz have really help me alot today my result came out and i score 98 out of 100 in my maths exams aldo i am still shaking in my english but with the help of ms sue i always

55. ## Chemistry:normal notation plz help

Using the normal notation of quantum number find the element which has the following value of quantum number n=3 l=2 m=2 s=+1/2 (a):potassuim (b):nitrogen (c):sodium (d):scandium

56. ## Another Calculus help plz

Integrate:( dx/root(x^2-4x)^3 help me show it solution

57. ## Calculus help plz

Integrate:(K+1/k^2+4k+8)dx

58. ## Log maths help me plz

Logb(base a)=3/2 log d(base c)=5/7 and a-c=9 then b-d=? Plz help me

59. ## Equation help plz

If x and y satisfy the equation (x+5)^2+(y-12)^2=14 then find the minimum value (x^2+y^2) plz help show working

60. ## Trigonomentry help plz thanks

find the number of root the equation given below in interval (-pi.pi) (cosx)^7+(sinx)^4=1

61. ## Bionomial expansion help agn #thanks

find the third term of the binomial expansion (root(x)+1/root(y)^6 plz help i do not no it at all show working!!

62. ## Calculus help plz i do not no it at all

Integrate: xrootof(2+3.fourth rootof(x^3)/x^6.root(x) plz help i do not no it at all show working!!

63. ## Another Calculus help plz

Show that if y=tanx/2 dy/dx=1/sinx

64. ## Calculus help plz

Integrate:cosmxcosnx.dx if m=n i can not solve it i have tried my best but to no avail

65. ## Calculus pz help urgently

Integrate:sinxcos(x-1/4.pi)dx

66. ## Calculus help plz

Evaluate in (cuberootof(x+1)/(x-1)).1/(x+1)dx help plz

67. ## Maths help equation

Evaluate x in 1/x

68. ## Reposting calculus help plz

Dy/dx=(X+x^3)/y help show working

70. ## Calculus i need help

(Cosx)^y=x^siny find dy/dx at point pi/(4,0)

71. ## Trigonomentry plz help

tanA=ntanB sinA=msinB find cos^2A in terms of 'm' and 'n' plz help

72. ## Maths deduce!damon or steve plz help any one

From (p-q)^2+(q-r)^2+(r-p)^2>(pq+qr+rp) hence deduce that for any number p,q,r,(p+q+r)>3(pq+qr+rp)

73. ## Maths plz help!

4x^2+8x-m=0,differs by 3 find the value of the constant m plz help me??

74. ## Maths plz help

X^x+y^y=31 x+y=5 plz help i was told to use newton litrate method plz help

75. ## AP Physics

A fire engine must lift 30 kg of water a vertical distance of 20 m each second. What is the amount of power needed for the water pump for this fire hose? Is the answer 5880W? If yes, why so?

76. ## Maths:simultaneous equation

Plz help me solve for x and y x^3+y^3=1 x^4+y^4=1 help???

77. ## Parametric derivatie help plz

Find the equation of the line tangent to the parametric curve define by x=cos2t and y=sin3t and t=pi/12 plz i don't no where to start from show working

78. ## Calculus plz help integral

Find the integral of §x^1/2.e^xdx at upper limit of 1/2 and lower limit of zero..show work plz

79. ## Calculus help

Solve using implicit derivative cuberoot(x)+cuberoot(xy)=4y^2

80. ## Simultaneous equation i nee help find x,y

X^-y=158 y^2-x=108 find x and y?? Show work

81. ## Calculus i need help plz plz

Integrate:Sinxcosx/a^2cos^2(x)+b^2sin^2(x))dx??? plz i need the full working too hard for me

82. ## Trigonometery help plz

Show that cos^2(theta)+tan(theta)cosec(theta)=cos??? Show work

83. ## Calculus...need help

Prove that the integral 1/root(ax^2+bx+c)dx=1/root(a)|n(2ax+b+2root(a(ax^2+bx+c)]+k....please i don,t no it

84. ## Steve look i have corrrected it help plz it urgent anyone plz

Last year kemi who happens to be my sister was 2wice as old as my lovely brillant primary school friend femi,last three years when i was two less than femi age now.the sum of kemi age next 9years and femi age now and my age three year will be equal to

85. ## Proving trigonometery

Show that Sin(A/2)=root(1/2(1-cosA)??

86. ## Geometry i need help urgently plz plz plz

The lenght of a line segement is of 10units and the co-ordinate of one end point are (2,-3) if the abscissa of the other end is 10 find the ordinate of the other end?? Working plz plz

87. ## Calculus also need help plz plz plz

If z=1/(x^2+y^2-1) is x(dz/dx)+y(dz/dy)=-2z(1+z) or -z^2(1+z) note:dz/dx=partial derivative of x and dz/dy=partial derivative of y??

88. ## Calculus badly need help so difficult

If y=ws^3/d^4 find the percent increase in y when w increase by 2% s decrease by 3% and s decrease by 1% plz show the full solution the question is byond my power

89. ## Hey reiny how am i going to go with these

Integrate x^xdx it is to difficult if wolfram can help any link or something

90. ## Integral so difficult i need help

Integrate x^xdx?? help so the solution it to difficult for me

91. ## Maths:distance covered urgently need help

A car travelling at 60km/hr started a journey travelling in an oppsite direction to his destination.After travelling for 35min the driver realised his mistake he then turn the car back around and started travelling in the correct direction.how far away is

92. ## Area of a triangle

In Triangle ABC b=6cm c=8cm and angle A=60 find the area of a triangle.let AD be the bisector of A where D lies on BC and AD=K show that AD=24root3/7

93. ## Infinity series i need help also

To what value does the sum of 20+12+36/5+.............tends to infinity??

94. ## Area of a triangle i need help urgently

in triangle ABC b=6 c=8 and angle A=60degree find the area of a triangle.let AD be the bisector of A where D lies on BC and AD=K?? Show that AD=24root3/7...

95. ## Maths;function i need help

(1):Given the cost function c(x)=10+2x and the revenue functio r(x)=3x,find break even quantity and the price (2):if the marginal cost of producing x unit is given by c'(x)=0.4x^3+2x and the fixed cost is p4000.00 find the cost function c(x) and cost

96. ## Revolution and frequency i need help physics

A spring makes 60 revolution in 15mins calculate the period and the frequency of the revolution??

97. ## Steve need your help probability

If 3% of electric bulb produced by a company are defective find the probability that in a sample of 100bulbs (a) 0 (b) 1 (c)2 d(3) bulbs will be defective???

98. ## Surd help plz

You ar given that root(59.3) = 7.70 and root(5.93) = 2.44. Find root(59300)???

99. ## Algebra badly need help

If (x+1/x)^2=3 then x^72+x^66+x^54+x^36+x^6+1=?? Plz help so confuse