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• A girl standing 220m from the foot of a high wall claps her hands and the echo reaches her 1.29 seconds later. Calculate the velocity of sound in air using this observation.
  

  A girl standing 220m from the foot of a high wall claps her hands and the echo reaches her 1.29 seconds later. Calculate the velocity of sound in air using this observation.

  
  Form 2, Physics: Sound

  Date posted: February 27, 2019.

• A certain design of jaguar sports car is capable of accelerating from rest to a velocity of 30ms^-1 in only 6s. Find the acceleration of the car, hence the distance traveled in the 6s.
  

  A certain design of jaguar sports car is capable of accelerating from rest to a velocity of 30ms^-1 in only 6s. Find the acceleration of the car, hence the distance traveled in the 6s.

  
  Form 3, Physics: Linear Motion

  Date posted: February 27, 2019.

• A mass of 84kg has a weight of 420N on a certain planet. Calculate the acceleration due to gravity on this planet.
  

  A mass of 84kg has a weight of 420N on a certain planet. Calculate the acceleration due to gravity on this planet.

  
  Form 1, Physics: Force

  Date posted: February 27, 2019.

• An electric crane lifts a load of 2000 kg through a vertical distance of 3.0 m in 6s. Determine: i)work done. ii)power developed iii)efficiency of the crane if it is operated by an electric motor rated 12.5 kw.
  

  An electric crane lifts a load of 2000 kg through a vertical distance of 3.0 m in 6s. Determine: i)work done. ii)power developed iii)efficiency of the crane if it is operated by an electric motor rated 12.5 kw.

  
  Form 3, Physics: Work, Energy, Power and Machines

  Date posted: February 27, 2019.

• When marking the fixed points on a thermometer, it is observed that at 0⁰C, the mercury thread length is 1 cm and 6 cm at 100⁰C. What temperature would correspond to a length of 4 cm?
  

  When marking the fixed points on a thermometer, it is observed that at 0⁰C, the mercury thread length is 1 cm and 6 cm at 100⁰C. What temperature would correspond to a length of 4 cm?

  
  Form 1, Physics: Thermal expansion

  Date posted: February 27, 2019.

• The mass of a relative density bottle is 20g when empty,70g when full of water and 95g full of another liquid. Determine the density of the liquid X.
  

  The mass of a relative density bottle is 20g when empty,70g when full of water and 95g full of another liquid. Determine the density of the liquid X.

  
  Form 1, Physics: Measurements 1

  Date posted: February 27, 2019.

• Three grades A, B and C of rice were mixed in the ratio 3:4:5. The cost per kilogram of each of the grades A, B and C was Ksh 120, Ksh 90 and Ksh 60, respectively.
  

  Three grades A, B and C of rice were mixed in the ratio 3:4:5. The cost per kilogram of each of the grades A, B and C was Ksh 120, Ksh 90 and Ksh 60, respectively. Calculate the cost of one kilogram of the mixture.

  
  Form 3, Mathematics: Compound Proportions and Rates of Work

  Date posted: February 27, 2019.

• Find the distance between the centre A of a circle whose equation is 2x² + 2y² + 6x + 10y + 7 = 0 and the point B(–4, 1).
  

  Find the distance between the centre A of a circle whose equation is 2x² + 2y² + 6x + 10y + 7 = 0 and the point B(–4, 1).

  
  Form 3, Mathematics: Graphical Determination of Laws

  Date posted: February 27, 2019.

• Wambua saves 1,040 shillings in the first year of his employment and each year afterwards saves 145 more than the preceding year.
  

  Wambua saves 1,040 shillings in the first year of his employment and each year afterwards saves 145 more than the preceding year. How much will she have saved by the time he retires in 30 years time?

  
  Form 3, Mathematics: Sequences and Series

  Date posted: February 27, 2019.

• The interior angle of regular polygon exceeds the exterior angle by 135^o. Find the number sides of the polygon.
  

  The interior angle of regular polygon exceeds the exterior angle by 135^o. Find the number of sides of the polygon.

  
  Form 1, Mathematics: Angles and Plane Figures

  Date posted: February 27, 2019.

• The G.C.D of two numbers is 18 and their L.C.M is 630. If one of the numbers is 126, find the other number
  

  The G.C.D of two numbers is 18 and their L.C.M is 630. If one of the numbers is 126, find the other number

  
  Form 1, Mathematics: Integers

  Date posted: February 27, 2019.

• A two digit number is such that the sum of the digits is 15. When the digits are reversed the new number formed is more than the original number by 27. Find the number
  

  A two digit number is such that the sum of the digits is 15. When the digits are reversed the new number formed is more than the original number by 27. Find the number

  
  Form 1, Mathematics: Linear Equations

  Date posted: February 27, 2019.

• Mr Mwololo sells two types of mathematical sets, type A and type B. Twenty four type A and ten type B cost. Kshs. 2,520...
  

  Mr Mwololo sells two types of mathematical sets, type A and type B. Twenty four type A and ten type B cost. Kshs. 2,520, while eighteen type A and thirty type B cost kshs. 3240. Mr. Muya bought eighteen type B. How much did he pay for them?.

  
  Form 1, Mathematics: Linear Equations

  Date posted: February 27, 2019.

• Solve for x 4^x + 2^2x -2 = 126
  

  Solve for x: 4^x + 2^2x -2 = 126

  
  Form 2, Mathematics: Indices

  Date posted: February 27, 2019.

• What was the total profit in shillings in the question below
  

  

  
  Form 1, Mathematics: Commercial Arithmetic 1

  Date posted: February 27, 2019.

• The line 3x – 2y + k = 0 passes through point A[6, 2] and is parallel to the line ax – 2y + 7 = 0. Find the values of a and k
  

  The line 3x – 2y + k = 0 passes through point A[6, 2] and is parallel to the line ax – 2y + 7 = 0. Find the values of a and k

  
  Form 2, Mathematics: Equations of Straight Lines

  Date posted: February 27, 2019.

• Find the value of x in the question below
  

  

  
  Form 3, Mathematics: Sequences and Series

  Date posted: February 27, 2019.

• Expand (1+x)⁷ up-to the fourth term.
  

  Expand (1+x)⁷ up-to the fourth term.

  
  Form 3, Mathematics: Binomial Expansion

  Date posted: February 27, 2019.

• Obtain the centre and the radius of a circle whose equation is; X² + y² -10y +16=0
  

  Obtain the centre and the radius of a circle whose equation is; X² + y² -10y +16=0

  
  Form 3, Mathematics: Graphical methods

  Date posted: February 27, 2019.

• Find the area of P in the following question
  

  Find the area of P in the following question

  
  Form 4, Mathematics: Matrices and Transformation

  Date posted: February 27, 2019.

• Find the velocity of a particle whose displacement s is given by; S=t³ – 5t² + 3t + 10 at t=5 seconds.
  

  Find the velocity of a particle whose displacement s is given by; S=t³ – 5t² + 3t + 10 at t=5 seconds.

  
  Form 4, Mathematics: Calculus

  Date posted: February 27, 2019.

• A pool of water with surface area of 0.6 ha has a uniform depth of 3m. A pipe drains the pool at the rate of 200 liters per second.How many hours does it take to empty the pool?
  

  A pool of water with surface area of 0.6ha has a uniform depth of 3m. A pipe drains the pool at the rate of 200 liters per second.How many hours does it take to empty the pool?

  
  Form 1, Mathematics: Rates, Ratios, Proportions and Percentages

  Date posted: February 27, 2019.

• A shopkeeper made a loss of 30% by selling and electric iron and sh 700.What profit would he have made by selling the iron box at sh 1,150.
  

  A shopkeeper made a loss of 30% by selling and electric iron and sh 700.What profit would he have made by selling the iron box at sh 1,150.

  
  Form 1, Mathematics: Commercial Arithmetic 1

  Date posted: February 27, 2019.

• The size of an interior angle of a polygon is 156⁰.Find the number of sides of the polygon.
  

  The size of an interior angle of a polygon is 156⁰.Find the number of sides of the polygon.

  
  Form 1, Mathematics: Angles and Plane Figures

  Date posted: February 27, 2019.

• Given that 9^2y x 2^x =72,Find the values of x and y.
  

  Given that 9^2y x 2^x =72,Find the values of x and y.

  
  Form 2, Mathematics: Indices

  Date posted: February 27, 2019.

• Use mathematical table to evaluate.
  

  Use mathematical table to evaluate.

  
  Form 2, Mathematics: Evaluation of numbers using Mathematical tables

  Date posted: February 27, 2019.

• Find the size each of an exterior angle of a regular hexagon.
  

  Find the size each of an exterior angle of a regular hexagon.

  
  Form 1, Mathematics: Angles and Plane Figures

  Date posted: February 27, 2019.

• The mass of a solid cone of radius 14cm and height 18cm is 4.62 kg.Find its density in g/cm³.
  

  The mass of a solid cone of radius 14cm and height 18cm is 4.62 kg.Find its density in g/cm³.

  
  Form 2, Mathematics: Measurement

  Date posted: February 27, 2019.

• Simplify the following equation
  

  Simplify the following equation

  
  Form 2, Mathematics: Quadratic Equations and Expressions

  Date posted: February 27, 2019.

• Find C such that B.C =A in the question below
  

  Find C such that B.C =A in the question below

  
  Form 3, Mathematics: Matrices

  Date posted: February 27, 2019.