# Collins

Most 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. ## 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

3. ## 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

4. ## Math

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

5. ## 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

6. ## 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

7. ## 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

8. ## 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

9. ## Help!! Geometric progression

Question(1):A G.P has a common ratio of 2 find the value of 'n' for which the sum 2n terms is 33 times the sum of n?? Question(2):in A G.P the product of the 2nd and the 4thterm is double ,the 5th term and the sum of the first 4 term is 80.find the G.P??

10. ## 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

11. ## 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.

12. ## 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

13. ## 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??

14. ## Literacy exam

What is expanded academic ASAP and what does it do

15. ## 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

16. ## 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???

17. ## 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

18. ## Precalculus

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

19. ## 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

20. ## Trigonomentry plz help

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

21. ## 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

22. ## 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

23. ## Word problem maths

The average age of a class of 21 boys is 14year 3month.if the oldest boy is not counted in.the average drops to 14years 2month,how old is he???

24. ## math

the probability that a radomly chosen potential customer will make a purchse is 0.20if a sales man calls on 6 customers .what is the probabilty they will make exactly 4 sales

25. ## 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

26. ## 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

27. ## 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

28. ## 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

29. ## 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' ?

30. ## 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

31. ## Proving trigonometery

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

32. ## 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

33. ## Trigonometry prove need help

Prove that (1-sinb)/(1+sin2b)=tan^2(45-b) plz the b means beta???

34. ## Angle of depression need help also

A fighter plane is flying horizontally at a constant speed of 600km/hr and the pilot observes an oil drolling platform in the sea at an angle of depression 60degree,after flying in 30sec.in the same direction the pilot notices that the depression angle has

35. ## 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

36. ## 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

37. ## 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

38. ## 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

39. ## Word problem maths

The average wage of a class of 21 boys is 14year 3month.if the oldest boy is not counted in,the average drop to 14years 2months.how olds is he in the class ????

40. ## 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

41. ## 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

42. ## 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

43. ## 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?

44. ## Permutation need help plz

How many 4 digit codes can we make provided that -the codes contain of numbers only -codes may not equal to 4000 -codes may not be less than 4000 -numbers may be repeated -codes have to be even numbers??????

45. ## I need help maths jus so confused

X^x=100 findx? these question is still like a black magic to me

46. ## 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

47. ## Maths trigonomentry

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

48. ## 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

49. ## 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

50. ## 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

51. ## Find x and y and also log

Question1:2^x+y=6,3^x-y=4 find x and y???? quesstion2:a^2+b^2=7ab show that log(a+b)=log3+(loga+logb)/2????

52. ## Integration need help

Integrate sin6xcos5xdx?

53. ## Math

two regular polygons of the same number of sides have sides 5 ft. and 12 ft. in length, respectively. what is the length of the side of another regular polygon of the same number of sides, if its area is equal to the sum of the other two.

54. ## 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

55. ## 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

56. ## Calculus pz help urgently

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

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

What is the sum of the digit in 4444^4444

58. ## 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

59. ## math

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

60. ## 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

61. ## HISTORY

explain the course of religious wars in buganda

62. ## 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

63. ## 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.

64. ## 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

65. ## Calculus help plz

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

66. ## Calculus i need help

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

67. ## 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)

68. ## Calculus help

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

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

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

70. ## 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

71. ## 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

72. ## 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.

73. ## 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??

74. ## 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

75. ## Integral so difficult i need help

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

76. ## 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...

77. ## Revolution and frequency i need help physics

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

78. ## 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

79. ## Physics i need help i have exams next weeks that is why i post the question that which i cannot do

The cost C of running a ship on a certain voyage is said to be given by c=av+b/v where v is the average speed in km/h and a,b are constant.find the value of v in terms of a and b to give the maximum cost,and also find the cost???

80. ## Probability i need help

In a form 1A class there are 25 boys and 20 girls.in a form 1B there are 20boys and 15girls.A learner is choosen at random from each class.find the probability that (a):both learners are boys (b):the choosen learners are of different sexes????

81. ## Find x algebra help

X^2-1=2^x?????

82. ## Probability help

In a football match A vs B in which 7 goals were scored and A won the match what is the probability that the score is 7-0 ??????

83. ## Logarithm prove abc

If logxbase2x=a log2xbase3x=b log3xbase4x=c show that abc+1=2bc??

84. ## integration need help

integrate secxdx

85. ## Maths: Sequences need help

The nth term of a sequences of v1,v2,v3 is given by Vn=6 2^n (1):show that for all value of n>1 Vn1=2(Vn-3)?? (2): obtain and simplify the sum of the first n term of the sequence??

86. ## Word problem

I have some bananas on sunday,on monday morning i ate some of them and at night the bananas became double on, tuesday morning i ate same number ,and at night the bananas so became double.this process continued till saturday and all the bananas were

87. ## Difficult algebriac word problem

I have some bananas on sunday,on monday morning i ate some of them and at night it became double,on tuesday morning i ate same number of bananas and at night also it became double,this process continued till saturday and all the bananas were finished.find

88. ## Math

A new set of car tires has a tread depth of 8 millileters. The tread depth decreases 0.12 millimeter per thousand miles driven. Write an equation that gives the tread depth as a function of the distance driven. Then predict what distance the tread depth

89. ## Chemistry

What is molecular mass of CuSO4(NH4)SO4.H2O

2+3Log a

91. ## logarithm help!!!!

k/k^5=logk find k

92. ## expansion help!!! maths

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

93. ## 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???

94. ## another integral...help

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

95. ## integration i need

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

96. ## 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

97. ## Minimum and maximum value

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

98. ## 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

99. ## 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