Get premium membership and access questions with answers, video lessons as well as revision papers.
|a| =v(4^2+3^2)
=5
|b| =v(3^2+(-1)^2)
=v10
|a| =v(2^2+5^2)
=v29
joseph rimiru answered the question on October 5, 2017 at 17:09
- Find the value of the scalar x and y where x(5) + y(-3) = (0)
...(Solved)
Find the value of the scalar x and y where x(5) + y(-3) = (0)
(2) (1) (3)
Date posted: October 5, 2017. Answers (1)
- Find the mean, mode and median of the following data collected in a certain research.
6,7,8,9,10,14,13,9,11,6,12
(Solved)
Find the mean, mode and median of the following data collected in a certain research.
6,7,8,9,10,14,13,9,11,6,12
Date posted: October 5, 2017. Answers (1)
- The velocity of a toy car increased uniformly from 30 m/s to 60 m/s in two minutes. Find the acceleration acquired by the toy car?(Solved)
The velocity of a toy car increased uniformly from 30 m/s to 60 m/s in two minutes. Find the acceleration acquired by the toy car?
Date posted: October 5, 2017. Answers (1)
- A trolley had a constant acceleration of 10 m/s^2 for 10 seconds. If the final velocity is 60 m/s, find
...(Solved)
A trolley had a constant acceleration of 10 m/s^2 for 10 seconds. If the final velocity is 60 m/s, find the initial velocity,
Date posted: October 4, 2017. Answers (1)
- The initial velocity of a vehicle is 20 m/s and after 8 seconds it is found to be 60 m/s. Find its
...(Solved)
The initial velocity of a vehicle is 20 m/s and after 8 seconds it is found to be 60 m/s. Find its
acceleration.
Date posted: October 4, 2017. Answers (1)
- Solve the inequality
2 – 4 x < 6
(Solved)
Solve the inequality
2 – 4 x < 6
Date posted: October 4, 2017. Answers (1)
- Combine the following pairs of simple statements into a compound statement.
a. x < 1/5 , x > 1/9
b. x= 5...(Solved)
Combine the following pairs of simple statements into a compound statement.
a. x < 1/5 , x > 1/9
b. x≤ 5 ,x ≥ 3
c. x ≤ 0.75 , x ≥ 0.135
Date posted: October 4, 2017. Answers (1)
- A hemispherical bowl can hold one litre of water, determine its radius (Solved)
A hemispherical bowl can hold one litre of water, determine its radius
Date posted: October 3, 2017. Answers (1)
- A straight road in a certain area rises steadily at angle of 10° to the horizontal ground. A lorry travels up the road. Calculate its...(Solved)
A straight road in a certain area rises steadily at angle of 10⁰ to the horizontal ground. A lorry travels up the road. Calculate its vertical and horizontal displacement.
Date posted: October 3, 2017. Answers (1)
- A bouncing castle consists of a conical top and a cylindrical base. The diameter of the base is 5 m and the height of the...(Solved)
A bouncing castle consists of a conical top and a cylindrical base. The diameter of the base is 5 m and the height of the cylindrical part is 4 m. If the total height is of the two parts is 9 m, calculate :
a. Its total surface area.
b. Its total volume.
Date posted: October 3, 2017. Answers (1)
- One of the large angles of rhombus is 100° and its sides are 20 cm long. Find the area of the rhombus.(Solved)
One of the large angles of rhombus is 100⁰ and its sides are 20 cm long. Find the area of the rhombus.
Date posted: October 3, 2017. Answers (1)
- A triangular lawn measures 12m, 16m, and 8m. Find the area of the garden.(Solved)
A triangular lawn measures 12m, 16m, and 8m. Find the area of the garden.
Date posted: October 3, 2017. Answers (1)
- Calculate the height of a cone if its base radius is 7.7 cm and has a volume of 514.6 cm^3.(Solved)
Calculate the height of a cone if its base radius is 7.7 cm and has a volume of 514.6 cm^3.
Date posted: October 2, 2017. Answers (1)
- A metal tube whose bore is 100 mm and thickness 21 is 7 m long. Find the volume of the metal it is made from.(Solved)
A metal tube whose bore is 100 mm and thickness 21 is 7 m long. Find the volume of the metal it is made from.
Date posted: October 2, 2017. Answers (1)
- A right pyramid has a square base 9 metres and is 20 metres high.
a. find its volume
b. If the...(Solved)
A right pyramid has a square base 9 metres and is 20 metres high.
a. find its volume
b. If the pyramid is cut at a height of 10 metres, find the volume of the frustum formed.
Date posted: October 2, 2017. Answers (1)
- Given that Cos x = sin (5x + 10). Find a. x b. ...(Solved)
Given that Cos x = sin (5x + 10). Find a. x b. Tan x
Date posted: October 2, 2017. Answers (1)
- Find the volume of a prism 30 cm long and its cross-section is regular, pentagon of side 10 cm.(Solved)
Find the volume of a prism 30 cm long and its cross-section is regular, pentagon of side 10 cm.
Date posted: October 2, 2017. Answers (1)
- Given that the density of lead is 11.4 g/cm^3. Calculate the mass of a lead sphere whose radius is 15 cm.(Solved)
Given that the density of lead is 11.4 g/cm^3. Calculate the mass of a lead sphere whose radius is 15 cm.
Date posted: October 2, 2017. Answers (1)
- Find the volume of each of the following right pyramid (Assume all are solids)
a. Triangular base, 7cm, 14 cm, 17cm and height 24 cm.
b. Square base, 9...(Solved)
Find the volume of each of the following right pyramid (Assume all are solids)
a. Triangular base, 7cm, 14 cm, 17cm and height 24 cm.
b. Square base, 9 cm, height 20cm.
c. Rectangular base, 4 cm by 10 cm, height 24 cm.
Date posted: October 2, 2017. Answers (1)
- A water tank is placed is placed on a concrete tower which is a regular hexagon of 5 m sides and height of 35 m....(Solved)
A water tank is placed is placed on a concrete tower which is a regular hexagon of 5 m sides and height of 35 m. Find the volume of the concrete used to make it.
Date posted: October 1, 2017. Answers (1)