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CBSE Class 9 Answered

Tips and Tricks For Maths
Asked by Annie Meghna Kujur | 30 Sep, 2013, 04:52: PM
Expert Answer
Studying Math is Different from Studying Other Subjects
 
Math is understandable by doing problems. Do the homework regularly.
The problems help you learn the formulas and techniques you do need to know.
 
Each class builds on the previous ones. You must keep up with the Teacher: attend class, read the text and do homework every day. Falling a day behind puts you at a disadvantage. Falling a week behind puts you in deep trouble. You're always reviewing previous material as you do new material. Many of the ideas hang together.
 
Identifying and learning the key concepts means you don't have to memorize as much. Do not hesitate in asking question. Practice as many questions as you can.
Answered by | 30 Sep, 2013, 05:06: PM
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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.
Asked by manmeetsaini1516 | 30 Jun, 2022, 09:36: AM
ANSWERED BY EXPERT
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  
Asked by snehameenu656 | 31 May, 2022, 11:12: PM
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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.
Asked by Mn2790976 | 19 May, 2022, 09:45: AM
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CBSE 9 - Maths
if this is a ball that cost 20 ruppe and a bat that cost 100 ruppe but the bat cost 10 ruppe more what is the total cost of ball and bat ?
Asked by nisalya.thakkar | 13 May, 2022, 09:01: PM
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CBSE 9 - Maths
draw the graph of 3 X + 4 Y = 7. find the coordinates of the point which intersects x axis and y axis​
Asked by diesh2323 | 08 May, 2022, 05:06: PM
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CBSE 9 - Maths
if p = 100r - t . find value of p where r = 0.25 and t = 10
Asked by bhagwanlalvairagi | 04 Apr, 2022, 04:48: PM
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CBSE 9 - Maths
In a schoo the number of students are 150 out of 150 students .If the girls are 50 more than boys form a linear equation for this data and draw the graph . For this graph find the number of  boys  and number of girls 
Asked by kalamathanomkeshwarrao | 07 Nov, 2021, 04:08: PM
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CBSE 9 - Maths
3a= 16-4
Asked by dineshkamar8546 | 06 Sep, 2021, 08:16: PM
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CBSE 9 - Maths
2x+3x=
Asked by lakha2647 | 28 Jul, 2021, 05:20: PM
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CBSE 9 - Maths
The car is moving with a speed of 60 km/h, travels y km distance in x hours. Represent this statement as a linear equation of two variables and draw the graph. Read from the graph, distance travelled when time is (i) 5 hours, (ii) 10 hours.
Asked by suhasinikhuba | 21 Jun, 2021, 08:00: PM
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