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Find the LCM of the three bells that is 20,40,30.The answer you get is 120 minutes which is equal to 2 hours. Then add the LCM(2 hours) to 10.00am which gives the answer as 12.00 at noon.
Take the answer (12.00) and add 4 hours which will give the answer of the third time they will ring together. You get 16.00 which is equal to 4.00pm
Elcis answered the question on November 14, 2017 at 10:47
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what is the error in the difference between the measurement 0.82g and 0.41g?
Date posted: November 11, 2017. Answers (1)
- What is the error in the sum of 5.5 cm and 7.1 cm, if each represents a measurement?(Solved)
What is the error in the sum of 5.5 cm and 7.1 cm, if each represents a measurement?
Date posted: November 11, 2017. Answers (1)
- The thickness of a coin is 0.30 cm.
a. What is the percentage error?
b. What would be the percentage error if its thickness was stated as 0.3...(Solved)
The thickness of a coin is 0.30 cm.
a. What is the percentage error?
b. What would be the percentage error if its thickness was stated as 0.3 cm
Date posted: November 11, 2017. Answers (1)
- The capacity of plastic container is 2 litres to the nearest 0.01litres. Find
a. The limits within which the capacity lies
b. The percentage error.
(Solved)
The capacity of plastic container is 2 litres to the nearest 0.01litres. Find
a. The limits within which the capacity lies
b. The percentage error.
Date posted: November 11, 2017. Answers (1)
- The capacity of a vessel is stated as 3000 millilitres to the nearest 10 millilitres. Find
a. The limit within which the capacity lies.
b. The percentage error
(Solved)
The capacity of a vessel is stated as 3000 millilitres to the nearest 10 millilitres. Find
a. The limit within which the capacity lies.
b. The percentage error
Date posted: November 11, 2017. Answers (1)
- For each of the following functions, find the inverse of the function (a)f(x)=x³+6 (b)f(x)=4v(5x+8)(Solved)
For each of the following functions, find the inverse of the function (a)f(x)=x³+6 (b)f(x)=4v(5x+8)
Date posted: November 10, 2017. Answers (1)
- If A={2,5,8} and B={0,2,6,9}, then AUB will be?(Solved)
If A={2,5,8} and B={0,2,6,9}, then AUB will be?
Date posted: November 10, 2017. Answers (1)
- Estimate the time which the lorry travelling at 89.67km/h will take to cover a distance of 4497 km(Solved)
Estimate the time which the lorry travelling at 89.67km/h will take to cover a distance of 4497 km
Date posted: November 10, 2017. Answers (1)
- A vehicle travelled for 4(1/2)hours and covered a distance of 844 km. estimate the speed of the vehicle.(Solved)
A vehicle travelled for 4(1/2)hours and covered a distance of 844 km. estimate the speed of the vehicle.
Date posted: November 10, 2017. Answers (1)
- Truncate the following numbers to the accuracy given in brackets:
a. 807.376 (2 d.p.)
b. 3.462 (2 s.f.)
c. 57.605 (1 d.p.)
(Solved)
Truncate the following numbers to the accuracy given in brackets:
a. 807.376 (2 d.p.)
b. 3.462 (2 s.f.)
c. 57.605 (1 d.p.)
Date posted: November 10, 2017. Answers (1)
- Round off the following to the nearest
a. Tenths
b. Hundredths
c. Thousandths
i. 68.246
ii. 1.2678
iii. 0.04791
(Solved)
Round off the following to the nearest
a. Tenths
b. Hundredths
c. Thousandths
i. 68.246
ii. 1.2678
iii. 0.04791
Date posted: November 10, 2017. Answers (1)
- Round of to the following to the nearest
a. Thousands
b. Hundreds
c. Tens
i 89546
ii 75342
iii 13177
(Solved)
Round of to the following to the nearest
a. Thousands
b. Hundreds
c. Tens
i 89546
ii 75342
iii 13177
Date posted: November 10, 2017. Answers (1)
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Estimate the answer to (162 x 279)/42
Date posted: November 10, 2017. Answers (1)
- Truncate 661.7 to
a. 3 significant figures
b. 2 significant figures
(Solved)
Truncate 661.7 to
a. 3 significant figures
b. 2 significant figures
Date posted: November 10, 2017. Answers (1)
- Truncate 4.246 to 2 decimal places.(Solved)
Truncate 4.246 to 2 decimal places.
Date posted: November 10, 2017. Answers (1)
- What is truncation?(Solved)
What is truncation?
Date posted: November 10, 2017. Answers (1)
- Round off 495.194 to:
a. The nearest hundreds
b. Four significant figures
c. The nearest whole number
d. Two decimal places
(Solved)
Round off 495.194 to:
a. The nearest hundreds
b. Four significant figures
c. The nearest whole number
d. Two decimal places
Date posted: November 10, 2017. Answers (1)
- Determine the population of a town four years ago if the present population is 800 000 and the annual population growth rate of the town...(Solved)
Determine the population of a town four years ago if the present population is 800 000 and the annual population growth rate of the town is 5%.
Date posted: November 7, 2017. Answers (1)
- A school bursar wishes to obtain the sum of the following amounts of money paid in as school fees for three students by the CDF:...(Solved)
A school bursar wishes to obtain the sum of the following amounts of money paid in as school fees for three students by the CDF: Ksh 10860, Ksh 49105 and Ksh 7352, the bursar estimates the sum by first rounding each of the amounts to 3 significant figures.
(a) Determine the estimated sum
(b) Determine the percentage error in this estimate
Date posted: November 7, 2017. Answers (1)
- A solid metal cuboid 1.5 m long, 0.4 m wide and 0.25 m high of material of density 7.5g/cm3. Calculate it's mass in Kilograms. ...(Solved)
A solid metal cuboid 1.5 m long, 0.4 m wide and 0.25 m high of material of density 7.5g/cm3. Calculate it's mass in Kilograms.
Date posted: November 7, 2017. Answers (1)