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- Evaluate the following expression(Solved)
Evaluate the following expression
Date posted: May 9, 2019. Answers (1)
- Two places P and Q are on the parallel of latitude 26°N. The two points lie on 10°W and 30°E longitudes respectively.(Solved)
Two places P and Q are on the parallel of latitude 26°N. The two points lie on 10°W and 30°E longitudes respectively.
(a) Find the distance between P and Q along their parallel of latitude in
(i) km (Taking R = 6370km and pi = 3.142)
(ii) nm
(b) Find in km the distance between points P and Q along a great circle.
(c) Two planes X and Y left P for Q at an average speed of 1200 knots and 5000 knots respectively. If X flew along the
great circle and Y along the parallel of latitude, which one arrived earlier and by how much time?
Date posted: May 9, 2019. Answers (1)
- The diagram below shows two intersecting circles with centres X and Y. HG is a tangent to the circle centre X at C.(Solved)
The diagram below shows two intersecting circles with centres X and Y. HG is a tangent to the circle centre X at C.
(a) Determine:
(i) Angle DXE
(ii) Length DE
(b) Hence, calculate the area of the shaded region.
Date posted: May 9, 2019. Answers (1)
- I own a motorcycle. Out of the 21 working days in a month, I only ride to work for 18 days. If I ride to...(Solved)
I own a motorcycle. Out of the 21 working days in a month, I only ride to work for 18 days. If I ride to work the
probability that I am bitten by a rapid dog is 4/15, otherwise it is only 1/13 when I am bitten by the dog, the probability
that I will get treatment is 4/5 and if I do not get treatment, the probability that I will get rabies is 5/7.
(a) Draw a tree diagram to show the events.
(b) Musing the tree diagram (a) above determine the probability that:
(i) I will not be bitten by a rapid dog.
(ii) I will get rabies
(iii) I will not get rabies.
Date posted: May 9, 2019. Answers (1)
- Use ruler and compasses only for all the constructions in this question.(Solved)
Use ruler and compasses only for all the constructions in this question.
(a) Construct a triangle ABC in which AB= 6cm, BC = 7cm and angle ABC = 75°. Measure:
(i) the length of AC
(ii) the angle of ACB
(b) Locus of P is such that BP = PC. Construct P.
(c) Construct locus of Q such that Q is on one side of BC opposite A and angle BCQ = 30°.
(d) (i) the locus of P and locus of Q meet at X. Mark X.
(ii) Construct the locus of R in which angle BRC = 120°.
(iii) Show the locus of S inside the triangle ABC such that XS ≥ SR.
Date posted: May 9, 2019. Answers (1)
- The diagram below shows a right pyramid with a horizontal rectangular base PQRS and vertex V. The area of the base
is 60cm2and the volume of...(Solved)
The diagram below shows a right pyramid with a horizontal rectangular base PQRS and vertex V. The area of the base
is 60cm2and the volume of the pyramid is 280cm3.
(a) Calculate the height of the pyramid.
(b) Given the ratio of the sides PQ: QR is 3:5 find the lengths of
(i) PQ
(ii) QR
(c) Find the length of the slanting height.
(d) Calculate the angle between the planes VRQ and PQRS.
Date posted: May 9, 2019. Answers (1)
- A dealer wishes to purchase cookers and refrigerators. he can buy at most 60 of both items. On average, a cooker and a
refrigerator costs sh...(Solved)
A dealer wishes to purchase cookers and refrigerators. he can buy at most 60 of both items. On average, a cooker and a
refrigerator costs sh 24,000 respectively. He must spend at least sh 480,000. The number of refrigerators should be at
most four times the number of cookers. He must buy more than 10 refrigerators. Taking the number of cookers to be x
and the number of refrigerators to be y:
(a) Form all inequalities to represent the above information and graph them.
(b) If the dealer makes a profit of sh 1200 and sh 2000 per cooker and refrigerator respectively, find the maximum
profit he will make.
(c) During a sales promotion week, the dealer declared a discount of 10% and 5% on the display prices of each other
cooker and refrigerator respectively. Determine his new maximum profit.
Date posted: May 9, 2019. Answers (1)
- The table below shows the rates of taxation in a certain year.(Solved)
The table below shows the rates of taxation in a certain year.
In that period, Mr. Omoit a teacher at Mundika Boys earning a basic salary of Ksh. 21,000 per month. In addition, he
was entitled to a house allowance of Kshs 9,000 p.m and a personal relief of Kshs 1056 /per month.
(a) Calculate how much income tax Mr. Omoit paid per month.
(b) Mr. Omoit’s .other deductions per month were co-operative society contributions sh 2,000 loan repayment,
sh 2,500/-. Calculate his net salary per month.
(c) Later in the same year, Mr. Omoit was transferred to Katira Secondary School where he earned hardship
allowance equivalent to 30% of his basic salary. If on top of deductions in (b) above he also had deduction of sh
2,700 p.m to KCT. Calculate the percentage change in his net salary per month.
Date posted: May 9, 2019. Answers (1)
- Find the quartile deviation of the following set of scores.
38, 121, 111, 143, 101, 120, 107, 106, 137, 141, 140.(Solved)
Find the quartile deviation of the following set of scores.
38, 121, 111, 143, 101, 120, 107, 106, 137, 141, 140.
Date posted: May 9, 2019. Answers (1)
- A varies as b and inversely as the square root of C. When B is increased by 26%, C is reduced by 19%. Find the
percentage...(Solved)
A varies as b and inversely as the square root of C. When B is increased by 26%, C is reduced by 19%. Find the
percentage change in the value of A.
Date posted: May 9, 2019. Answers (1)
- Find the sum of the first six terms of the progression given;(Solved)
Find the sum of the first six terms of the progression given;
Log 2x + log 4x + log 8x + log 16x + ..........
leaving your answer in the form a log bx2 where a and b are integers.
Date posted: May 9, 2019. Answers (1)
- Given that OA = 3i + 2j - 4k and OB = 4i + 5j - 2k. P divides AB externally in the ratio 3:...(Solved)
Given that OA = 3i + 2j - 4k and OB = 4i + 5j - 2k. P divides AB externally in the ratio 3: -2. Determine the position
vector of P in terms of i, j and k.
Date posted: May 9, 2019. Answers (1)
- A farmer wishes to enclose a rectangular nursery against a long straight wall. He has 40m of fencing wire. What is the
largest area he can...(Solved)
A farmer wishes to enclose a rectangular nursery against a long straight wall. He has 40m of fencing wire. What is the
largest area he can fence using the wire.
Date posted: May 9, 2019. Answers (1)
- Make P the subject of the formula.(Solved)
Make P the subject of the formula.
Date posted: May 9, 2019. Answers (1)
- The cost per kg of two brand of tea x and y are Sh. 60 and Sh. 80. The two brands are mixed and sold...(Solved)
The cost per kg of two brand of tea x and y are Sh. 60 and Sh. 80. The two brands are mixed and sold at a profit of 20%
above the cost. if 1kg mixture was sold at Sh. 78, determine the ratio in which the two brands were mixed.
Date posted: May 9, 2019. Answers (1)
- Simplify the expression.(Solved)
Simplify the expression.
Date posted: May 9, 2019. Answers (1)
- P and Q are the points on the ends of the diameter of the circle below.(Solved)
P and Q are the points on the ends of the diameter of the circle below.
(a) Write down in terms of x and y the equation of the circle in the form;
ax2 + by2 + x + y + c = 0
(b) Find the equation of the tangent at Q in the form ax + by + c = 0.
Date posted: May 9, 2019. Answers (1)
- Solve for x in the equation below(Solved)
Solve for x in the equation below
Date posted: May 9, 2019. Answers (1)
- (a) Given matrices P and Q below,Find PQ.(Solved)
(a) Given matrices P and Q below,Find PQ.
(b) Hence, find the point of intersection of the lines 4x + y = 9 and 3y =2x -1
Date posted: May 9, 2019. Answers (1)
- Using a calculator, simplify;(Solved)
Using a calculator, simplify;
Date posted: May 9, 2019. Answers (1)