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CBSE Class 9 Answered

FIND THE ORTHOCENTER OF THE TRIANGLE FORMED BY THE LINES X=2 , Y=5 AND X+Y=6.
Asked by M.s.srinidhi21 | 01 Oct, 2014, 11:33: AM
answered-by-expert Expert Answer
x equals 2...... left parenthesis i right parenthesis y equals 5...... left parenthesis i i right parenthesis x plus y equals 6... left parenthesis i i i right parenthesis S o l v i n g space left parenthesis i right parenthesis space a n d space left parenthesis i i right parenthesis comma space w e space g e t x equals 2 comma space y equals 5 A left parenthesis 2 comma space 5 right parenthesis S o l v i n g space left parenthesis i right parenthesis space a n d space left parenthesis i i i right parenthesis comma space w e space g e t x equals 2 comma space y equals 4 B left parenthesis 2 comma space 4 right parenthesis S o l v i n g space left parenthesis i i right parenthesis space a n d space left parenthesis i i i right parenthesis comma space w e space g e t x equals 1 comma space y equals 5 C left parenthesis 1 comma space 5 right parenthesis O r t h o c e n t e r space o f space a space r i g h t space a n g l e d space t r i a n g l e space i s space a t space t h e space a n g l e space c o n ta i n i n g space r i g h t space a n g l e. F o r space increment A B C comma space o r t h o c e n t r e space i s space a t space A left parenthesis 2 comma 5 right parenthesis
Answered by Vimala Ramamurthy | 02 Oct, 2014, 01:52: PM

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CBSE 9 - Maths
Draw the graph of the equation of line 2x + 3y = 6. Write the co ordinates of the point where the line intersects X-axis and Y-axis.
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a man invested one part of his savings at an annual interest at the rate of 12 percent and the other parts at 14 percent if he received a total interest of Rs 4000 represent the given information in the form of a linear equation in two variables
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CBSE 9 - Maths
Ramu’s age is 3 8 th of his father’s age. If his father’s age is 32 years, then Ramu’s age is ___
Asked by achandrika140 | 27 Oct, 2023, 10:06: PM
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CBSE 9 - Maths
you decided to rent a car for your vocation the rental company charges 50 rupees rent the car plus 40 rupees per a day write an equation represent the situation
Asked by venkateshachari | 02 Oct, 2023, 11:42: AM
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CBSE 9 - Maths
Which of the following equations are linear equations in two variables and which are not? i) 2x+5=0 ii) 5x+6y=3z iii) 5x2-3y²+4=0 iv) 4y = 7
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CBSE 9 - Maths
A lending library has a fixed charge for the first three days and an additional charge for each day there after. Neeru paid Rs. 21 for a book kept for five days . Write a linear equation which satisfies this data. Draw trhe graph for the same.
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CBSE 9 - Maths
Two cell phone companies offer different packages. Company A charges a fixed monthly fees of  Rs 34 plus Rs 0.5/ minute talk time. Company B charges a fixed monthly fees of Rs 40 plus Rs  0.4 / minute talk time. Take x as the charges per minute for the talk time and y as the total amount. Based on above information answer the following question: (i) Linear equations representing the packages of a company A and B are : (a) y=34 + 0.5 x, y= 40 +0.4 x (b) y=34 + 0.4 x, y= 40 +0.5 x (c ) x=34 + 0.5 x, y= 40 +0.4 y (d) x=34 + 0.4y, y= 40 +0.5y (ii) If the average number of minutes used monthly by Sunil is 1160, then which of the  following is true? (a) Company A offers the better package (b)Company B offers the better  package (c ) Both companies offer the same package (d) None of the above (iii) If Sunita pays a total bill of Rs 208 to company B then the number of minutes used  by her : (a) 400  (b) 420 (c) 410 (d)390 (iv) The shape of the graph represented by the equations in part (i) is : (a) Rectangle (b) Circle (c) Parabola (d) Pair of lines (v) The number of minutes of talk time that results in equal monthly bills from both the  companies is : (a) 50  (b) 60  (c) 55  (d)65  
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CBSE 9 - Maths
7. A number consists of two digits whose sum is 12. If 18 is added to the number, the digits are reversed. Find the number.
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