Let Janet xkm/hr
Martha (x-16)km/hr
96/x-16 - 96/x=1/2
96x-96x+1536=1/2x(x-16)
3072=X²-16x
x²-16x-3075=0
(x-64) (x+48)=0
x=64 or x=-48
x=64km/hr
Belan answered the question on February 25, 2019 at 09:19
- A two digit number is four times the sum of its digits.If the digits are interchanged the number formed is more than the original number...(Solved)
A two digit number is four times the sum of its digits.If the digits are interchanged the number formed is more than the original number by twenty seven.Find the number.
Date posted: February 20, 2019. Answers (1)
- The ratio of the interior to the exterior angle of a regular polygon is 9:1.Find the number of sides of the polygon.(Solved)
The ratio of the interior to the exterior angle of a regular polygon is 9:1.Find the number of sides of the polygon.
Date posted: February 20, 2019. Answers (1)
- State four types of variation in Time series(Solved)
State four types of variation in Time series.
Date posted: February 14, 2019. Answers (1)
- State two approaches to Time series(Solved)
State two approaches to Time series.
Date posted: February 14, 2019. Answers (1)
- The average lap time for 3 athletes in a long distance race is 36 seconds, 40 seconds and 48 seconds respectively.(Solved)
The average lap time for 3 athletes in a long distance race is 36 seconds, 40 seconds and 48 seconds respectively.
If they all start the race at same time, find the number of times the lowest runner will have been over lapped by the fastest at the time all cross the starting point together again.
Date posted: February 2, 2019. Answers (1)
- Line L1 passes through the points A (1,2) and B (3, -4). Find the equation of L2 passing through the mid-point of AB and perpendicular to L1, leaving your answer in the form ax+by+c=0(Solved)
Line L1 passes through the points A (1,2) and B (3, -4). Find the equation of L2 passing through the mid-point of AB and perpendicular to L1, leaving your answer in the form ax+by+c=0
Date posted: February 2, 2019. Answers (1)
- Mutua has 21 coins. The total value of the coins is Kshs. 72. There are half as many ten shillings coin as there are five shilling coins. If the rest are one shilling coin, find the number of five shilling coins mutual has.(Solved)
Mutua has 21 coins. The total value of the coins is Kshs. 72. There are half as many ten shillings coin as there are five shilling coins. If the rest are one shilling coin, find the number of five shilling coins mutual has.
Date posted: February 2, 2019. Answers (1)
- Portfolio manager wants to purchase a stock.if inflation decreases, the Probability is 0.9 that investment will be profitable. If inflation remains constant or increases, the...(Solved)
Portfolio manager wants to purchase a stock.if inflation decreases, the Probability is 0.9 that investment will be profitable. If inflation remains constant or increases, the Probability is 0.6 that investment will be profitable. Assume Probability that inflation rate declines is 0.3. what is the Probability that investment will be profitable?
Date posted: January 25, 2019. Answers (1)
- Find the angle between the vectors u=2i+2j and v=3i-2j.correct to one decimal place(Solved)
Find the angle between the vectors u=2i+2j and v=3i-2j.correct to one decimal place
Date posted: January 24, 2019. Answers (1)
- Verify Rolle's theorem for the function f(x)=x²-4x-12,intervals [6<=x<=-2]
(Solved)
Consider the function f(x)=x²-4x-12 in the interval [6<=x<=-2].Verify Rolle's theorem. (3Marks)
Date posted: January 23, 2019. Answers (1)
- Consider the function f(x)=x²-7x+10 in the interval [2<=x<=5].Verify Rolle's theorem. (3Marks)(Solved)
Consider the function f(x)=x²-7x+10 in the interval [2<=x<=5].Verify Rolle's theorem. (3Marks)
Date posted: January 23, 2019. Answers (1)
- State Rolle's theorem. (2 Marks)(Solved)
State Rolle's theorem. (2 Marks)
Date posted: January 23, 2019. Answers (1)
- State the classification of Differential equations. (3 Marks)
(Solved)
State the classification of Differential equations. (3 Marks)
Date posted: January 23, 2019. Answers (1)
- Define the term Differential equation. (2 Marks)(Solved)
Define the term Differential equation. (2 Marks)
Date posted: January 23, 2019. Answers (1)
- Why are premiums paid in advance?(Solved)
Why are premiums paid in advance?
Date posted: December 27, 2018. Answers (1)
- Express 8,200,000 in standard form(Solved)
Express 8,200,000 in standard form
Date posted: December 17, 2018. Answers (1)
- Explain what are quadrilaterals giving an example(Solved)
Explain what are quadrilaterals giving an example
Date posted: December 8, 2018. Answers (1)
- What is the supplementary angle to 130 degrees(Solved)
What is the supplementary angle to 130 degrees
Date posted: December 8, 2018. Answers (1)
- If the mass of a tin is given as 2kg to the nearest 10g,find the percentage error(Solved)
If the mass of a tin is given as 2kg to the nearest 10g,find the percentage error
Date posted: December 8, 2018. Answers (1)
- Define surds and give an example(Solved)
Explain what are surds in mathematics giving an example of a surd
Date posted: December 8, 2018. Answers (1)