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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi bobbym,

The solutions 103 and 104 are correct. Brilliant!

105. Find the equation of the straight line passing through the point of intersetion of the lines 2x+y-3 = 0 and x+y-6 = 0 and parallel to the line joining the points (1,2) and (2,1).

106. The radius and the height of a right ircular cone are in the ratio 2:3. Find the slant height if its volume is 100.48 cubic centimeters.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi bobbym,

The solutions 105 and 106 are correct. Excellent!

107. A hemispherical dome of a building needs to be painted. If the circumference of the base is 17.6 meters, find the cost of painting at the rate of $5 per square meter.

108. A test of General Knowledge was conducted for a class. The marks out of 40, obtained by 6 students were 20, 14, 16, 30, 21, and 25. Find the standard deviation of the data.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi bobbym,

The solutions 107 and 108 are correct. Stupendous!

109. Radii of two solid hemispheres are in the ratio 3:5. Find the ratio of their curved surface area and the ratio of their total surface areas.

110. A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball from the bag is thrice that of red balls, then find the number of blue balls in the bag.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi bobbym,

the solutions 109 and 110 are correct. Brilliant!

111. The sum of a number and its reciprocal is

. Find the number.112. The diameter of a sphere is 6 centimeters. It is melted and drawn into a wire of diameter 0.2 centimeter. Find the length of the wire.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi bobbym,

The solutions 111 and 112 are correct. Magnificent!

113. If

are the roots of the equation , find the value of .114. Volume of a solid cylinder is 62.37 ubic centimeters. Find the radius if its height is 4.5 centimeters.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi bobbym,

the solutions 113 and 114 are correct. Brilliant!

115. Find the value of

.116. Find the Standard Deviation of the first 10 natural numbers.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi bobbym,

The solutions 115 and 116 are correct. Brilliant!

117. If

are the roots of the equation , form a quadratic equation whose roots are .118. Find the equation of the straight line which passes through the point of interscetion of the straight lines 5x-6y = 1 and 3x+2y+5 = 0 and is perpendicular of the straight line 3x-5y+11 = 0.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi,

119. Find the sum of the series:

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi,

120. Find the Least Common Multiple of the pair of polynomials

whose Greatest Common Divisor is .Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi,

120. Solve the quadratic equation

by completing the square.Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

Hi;

For the first #120

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi bobbym,

The solution 120 (a) is correct. Marvelous!

121. A hollow cylindrical copper pipe is 21 decimeters long. Its outer and inner diameters are 10 centimeters and 6 centimeters respectively, find the volume of the copper used in making the pipe.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

Hi;

For the second 120:

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi bobbym,

The solution 120 (ii) is perfect. Immaculate!

122. What term of the series 9 + 3 + 1 + ...... is

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi,

The solution 122 is correct. Good work!

123. Find the equation of the straight line whose end points are the point of intersection of the straight lines 2x-3y+4 = 0, x-2y+3 = 0 and the mid-point of the line joining the points (3.-2) and (-5,8).

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,991

Hi,

#124. How many two-digit numbers are divisible by 13?

#125. If

are the roots of the equation , find the value of .Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Olinguito****Member**- Registered: 2014-08-12
- Posts: 649

*Bassaricyon neblina*

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