- The diagram below shows a square based pyramid V vertices above the middle of the base. PQ=10cm and VR=13cm M is the midpoint of VR(Solved)
The diagram below shows a square based pyramid V vertices above the middle of the base. PQ=10cm and VR=13cm M is the midpoint of VR
Find
(a)(i) the length PR
(ii) the height of the pyramid
(b)(i) the angle between VR and the base PQRS
(ii) the angle between PM and the base PQRS
(iii) the angle between the planes QVR and PQRS
Date posted: November 8, 2019. Answers (1)
- Given that OA= -i +j, OB=3i+5j and OC= 11i+13j. Show that A, B and C are collinear.(Solved)
Given that OA= -i +j, OB=3i+5j and OC= 11i+13j. Show that A, B and C are collinear.
Date posted: November 8, 2019. Answers (1)
- Three towns X,Y and Z are such that Y is 50km South of X and Z is on a bearing of 300o from Y. Calculate...(Solved)
Three towns X,Y and Z are such that Y is 50km South of X and Z is on a bearing of 300o from Y. Calculate the angle XZY given that XZ is 70km.
Date posted: November 8, 2019. Answers (1)
- A transformation matrix maps an object of area 21cm2 to an image of area 42cm2. Determine the value of p.(Solved)
A transformation matrix maps an object of area 21cm2 to an image of area 42cm2. Determine the value of p.
Date posted: November 8, 2019. Answers (1)
- The points P and Q are 7.4cm apart. By construction locate the locus R such that PR=2.5cm and angle PRQ=90o.(Solved)
The points P and Q are 7.4cm apart. By construction locate the locus R such that PR=2.5cm and angle PRQ=90o.
Date posted: November 8, 2019. Answers (1)
- Find the radius and the coordinates of the centre of the circle whose equation is
2x2 + 2y2 – 3x +2y + 1/2 = 0(Solved)
Find the radius and the coordinates of the centre of the circle whose equation is
2x2 + 2y2 – 3x +2y + 1/2 = 0
Date posted: November 8, 2019. Answers (1)
- A bag contains 2 white balls and 3 black balls. A second bag contained 3 white balls and 2 black balls. The balls are identical...(Solved)
A bag contains 2 white balls and 3 black balls. A second bag contained 3 white balls and 2 black balls. The balls are identical except for the colours. Two balls are drawn at random, one after the other from the first bag and placed in the second bag. Calculate the probability that the two balls are both white.
Date posted: November 8, 2019. Answers (1)
- A circle whose equation is x2+y2+4x-10y+4=0 touches a straight line (-7,3). Find the equation of the line(Solved)
A circle whose equation is x2+y2+4x-10y+4=0 touches a straight line (-7,3). Find the equation of the line
Date posted: November 8, 2019. Answers (1)
- Find the value of x given that the matrix is a singular matrix.(Solved)
Find the value of x given that the matrix is a singular matrix.
Date posted: November 8, 2019. Answers (1)
- Solve for x in the equation.
2sin2x-1 = cos2 x + sin x, where OO = x = 360o.(Solved)
Solve for x in the equation.
2sin2x-1 = cos2 x + sin x, where OO ≤ x ≤ 360o.
Date posted: November 8, 2019. Answers (1)
- Find the values of a and b where a and b are irrational numbers(Solved)
If, ,find the values of a and b where a and b are irrational numbers
Date posted: November 8, 2019. Answers (1)
- The dimensions of a rectangle are 40cm and 45cm. If there is an error of 5% in the length and 8% in the width. Find...(Solved)
The dimensions of a rectangle are 40cm and 45cm. If there is an error of 5% in the length and 8% in the width. Find the percentage error I calculating the area of the rectangle.
Date posted: November 8, 2019. Answers (1)
- Use logarithms correct to 4 decimal places to evaluate.(Solved)
Use logarithms correct to 4 decimal places to evaluate.
Date posted: November 8, 2019. Answers (1)
- Given that x=2i+j-2k, y=-3i+4j-k, and z=-5i+3j+2k and p=3x-y+2z, calculate the magnitude of p correct to 3 significant figures(Solved)
Given that x=2i+j-2k, y=-3i+4j-k, and z=-5i+3j+2k and p=3x-y+2z, calculate the magnitude of p correct to 3 significant figures
Date posted: November 8, 2019. Answers (1)
- a) Using the trapezium rule with seven ordinates estimate the area of the region bounded by the
curve y= - x2 + 6x +1, the line...(Solved)
a) Using the trapezium rule with seven ordinates estimate the area of the region bounded by the
curve y= - x2 + 6x +1, the line x=0,y=0 and x=6.
b) Calculate:
i) The area of the region in (a) above by integration.
ii) The percentage error of the estimated area to the actual area of the region, correct to 2d.p.
Date posted: November 8, 2019. Answers (1)
- In the diagram, below LX = SLN
ON = a OL = b, LX = SLN, OM = 3a and MK = 2b.
a) Calculate:
i) LN in...(Solved)
In the diagram, below LX = SLN
ON = a OL = b, LX = SLN, OM = 3a and MK = 2b.
a) Calculate:
i) LN in terms of a and b.
ii) OK in terms of a and b.
b) i) Show that OX = sa + (1 - s) b where s is a scalar.
ii) Given also that OX = r OK, find the value of r and s.
iii) Determine the ratio OX: XK.
Date posted: November 8, 2019. Answers (1)
- Find the relative error in the area of a parallelogram whose base is 8cm and height 5.0cm(Solved)
Find the relative error in the area of a parallelogram whose base is 8cm and height 5.0cm
Date posted: November 8, 2019. Answers (1)
- Using a ruler and pair of compasses only.
a) Construct triangle ABC such that AB=6.3cm, BC = 7.2cm and angle ABC=60O.
b) Measure the length AC.
c)...(Solved)
Using a ruler and pair of compasses only.
a) Construct triangle ABC such that AB=6.3cm, BC = 7.2cm and angle ABC=60O.
b) Measure the length AC.
c) Draw a circle that touches the vertices A, B and C.
d) Measure the radius of the circle.
e) Hence, calculate the area of the circle outside the triangle correct to one decimal place.
Date posted: November 8, 2019. Answers (1)
- The figure below shows a solid structure in the shape of a frustum of a cone with a hemispherical bottom. The radius of the hemispherical...(Solved)
The figure below shows a solid structure in the shape of a frustum of a cone with a hemispherical bottom. The radius of the hemispherical part is 28cm and is equal to the radius of the bottom of the frustum. The frustum has a top radius of 16cm and a height of 12cm. (Use Π=22/7.)
a) Calculate to 2d.p.
i) The volume of the frustum.
ii) The volume of the solid.
b) Given that the solid has a mass of 20kg. Find its density in g/cm3.
Date posted: November 8, 2019. Answers (1)
- Expand(Solved)
(i) Expand to the term in x3
(ii) Use your expansion to estimate the value of correct to one decimal place
Date posted: November 8, 2019. Answers (1)