Get premium membership and access questions with answers, video lessons as well as revision papers.
Water: Milk
4 :1
Total volume of mixture is 4+1=5cm^3
Water density is 1g/cm^3
Milk density is 1.2g/cm^3
Mass = density × volume
Mass of water =1g/cm^3 ×4cm^3 = 4g
Mass of milk = 1.2cm^3 ×1cm^3 = 1.2g
Total mass of mixture is 5.2g
Find mass of 2.5l of mixture.
1L = 1000cm^3.
2.5L = 2.5 ×1000= 2500cm^3
A mixture of 5cm^3 = 5.2g
A mixture of 2500cm^3 =?
2500cm^3 × 5.2g ÷ 5cm^3 = 2600g.
Lizbel answered the question on December 15, 2017 at 17:51
- What is a random experiment as used in statistics?(Solved)
What is a random experiment as used in statistics?
Date posted: December 11, 2017. Answers (1)
- The probability that the school team wins a match is 0.6. The probability that the team loses is 0.3 and the probability that the team...(Solved)
The probability that the school team wins a match is 0.6. The probability that the team loses is 0.3 and the probability that the team has is 0.1. The team plays 3 games. What is the probability that the team;(a)wins two matches
(b)either wins all the matches or loses all the matches
(c)wins one match,loses one and ties in one
Date posted: December 9, 2017. Answers (1)
- Find the equation of a circle whose diameter has the end points (-2,5) and (4,1)(Solved)
Find the equation of a circle whose diameter has the end points (-2,5) and (4,1)
Date posted: December 9, 2017. Answers (1)
- In a factory, machines A, B and C produce identical balls. The probability that a ball was produced by machine A or B is...(Solved)
In a factory, machines A, B and C produce identical balls. The probability that a ball was produced by machine A or B is 11/15. The probability that a ball was produced by a machine B or C is 2/3. lf the probability that a ball was produced by machine A is 1/3, what is the probability that a ball was produced by machine C?
Date posted: December 9, 2017. Answers (1)
- A bus takes 195 minutes to travel a distance of (2 x +30) km at an average speed of ( x-20) km/hr. calculate the actual...(Solved)
A bus takes 195 minutes to travel a distance of (2 x +30) km at an average speed of ( x-20) km/hr. calculate the actual distance travelled. Give your answer in kilometers.
Date posted: December 8, 2017. Answers (1)
- State three disadvantages of secondary data in statistics(Solved)
State three disadvantages of secondary data in statistics
Date posted: December 4, 2017. Answers (1)
- State three types of correlation in statistics.(Solved)
State three types of correlation in statistics.
Date posted: December 3, 2017. Answers (1)
- State two major methods of measuring correlation(Solved)
State two major methods of measuring correlation.
Date posted: December 3, 2017. Answers (1)
- Define correlation in mathematics.(Solved)
Define correlation in mathematics.
Date posted: December 3, 2017. Answers (1)
- State three properties of standard deviation.(Solved)
State three properties of standard deviation.
Date posted: December 2, 2017. Answers (1)
- Solve for x: cos 3x = sin 6x(Solved)
This is under trigonometry
Date posted: November 21, 2017. Answers (1)
- Kipkemboi running at 10m/s starts 5 m ahead of Mutola who is running at 12m/s. How far from Kipkemboi's
starting point does Mutola overtake him?...(Solved)
Kipkemboi running at 10m/s starts 5 m ahead of Mutola who is running at 12m/s. How far from Kipkemboi's
starting point does Mutola overtake him?
Date posted: November 21, 2017. Answers (1)
- Nafula broke three beakers and 4 test tubes and Munyao broke two beakers and 5 test tubes during practicals in the laboratory. If Nafula was...(Solved)
Nafula broke three beakers and 4 test tubes and Munyao broke two beakers and 5 test tubes during practicals in the laboratory. If Nafula was charged Sh 560 and Munyao Sh 490 for the breakages, find the cost of one beaker and one test tube.
Date posted: November 20, 2017. Answers (1)
- Use tables of logarithms to evaluate. (Solved)
Use tables of logarithms to evaluate.
$\frac{4.28 \times 0.01677}{tan 20^o}$
Date posted: November 20, 2017. Answers (1)
- Find dy/dx,let y=x^2+3. ...(Solved)
Find dy/dx,let y=x^2+3.
Date posted: November 18, 2017. Answers (1)
- Define the following terms as used in real analysis..1.a set,2.cardinality ,3.null sets, 4.equal sets(Solved)
Define the following terms as used in real analysis..1.a set,2.cardinality ,3.null sets, 4.equal sets
Date posted: November 18, 2017. Answers (1)
- What are real numbers (Solved)
What are real numbers
Date posted: November 18, 2017. Answers (1)
- Find the perimeter of a square lawn whose area is 81 cm^2(Solved)
Find the perimeter of a square lawn whose area is 81 cm^2
Date posted: November 17, 2017. Answers (1)
- If theta lies between 0 and 360 and sin theta = 0.5, find the two possible values of theta(Solved)
If theta lies between 0 and 360 and sin theta = 0.5, find the two possible values of theta.
Date posted: November 16, 2017. Answers (1)
- Truncate the following to three decimal places.
a. 1/3
b. 21.47321
c. 523.7946
d. 0.0007678
(Solved)
Truncate the following to three decimal places.
a. 1/3
b. 21.47321
c. 523.7946
d. 0.0007678
Date posted: November 16, 2017. Answers (1)