`8(m+5)`

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Solve the equation and check your result.3m=5m-(8)/(5)

Solve: (18 - 2m)/(5) + (4m + 3)/(7) ge (m)/(5) + (8)/(7)

The height of a tree is 10 m. It is bent by the wind in such a way that its top touches the ground and makes an angle of 60� with the ground. At what height from the bottom did the tree get bent ? (? = 1.732) (b) 4.8 m (c) 5.2 m (d) 5.4 m

A positive charge Q=50 muC is located in the xy plane at a point having position vector vec(r)_(0)=(2hat(i)+3hat(j))m where hat(i) and hat(j) are unit vectors in the positive directions of X and Y axis respectively. Find : (a) The electric intensity vector and its magnitude at a point having co-ordinates (8m, -5m). (b) Work done by external agent in transporting a charge q=10 muC from (8m, 6m) to the point (4m, 3m).

Quantity I: 165m^(5)n^(3)div55/3m^(-2)n^(5)8m^(-5)n^(8),mgt0,nlt0 Quantity II: 210x^(9)y^(9)div35x^(4)y^(2)div3x^(2)y^(4)'xlt0,ylt0 Quantity III: 68a^(8)b^(12)xx5a^(3)b^(-4)div17a^(6)b,agt0,blt0

If the A.M. of the roots of a quadratic equation is (8)/(5) and the A.M. of their reciprocals is (8)/(7) then the equation is

If m is a real number such that m^(2)+1=3m the value of (2m^(5)-5m^(4)+2m^(3)-8m^(2))/(1+m^(2))

Four horses are tethered at four corners of a square plot of side 63 metres so that they just cannot reach one another.The area left ungrazed is (a) 675.5m2 (b) 780.6m2 (c) 785.8m2 (d) 850.5m2

Find the value of the discriminant (Delta) in each of the following quadratic equations : 4m^(2)-8m+5=0

NCERT EXEMPLAR-ALGEBRAIC EXPRESSIONS-Exercise
  1. Find the perimeter of the figure given below:

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  2. In a rectangular plot, 5 square flower beds of side (x+2) metres each ...

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  3. A wire is (7x - 3) metres long. A length of (3x - 4) metres is cut for...

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  4. A wire is (7x - 3) metres long. A length of (3x - 4) metres is cut for...

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  5. Rohan's mother gave him 3xy^2 and his father gave him 5(xy^2 +2). Out ...

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  6. A triangle is made up of 2 red sticks and 1 blue sticks length of a...

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  7. The sum of first n natural numbers is given 1/2 n^2 +1/2n. Find (i...

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  8. The sum of squares of first n natural numbers is given by 1/6 n (n+1)(...

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  9. The sum of the multiplication table of natural number 'n' is given by ...

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  10. Translate each of the following algebraic expressions into words 4b-...

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  11. 8(m+5)

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  12. Solve the equation, 7/(8-x)=2/3

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  13. Solve the equation, 17/(w+3)=16/(w+1)

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  14. Write the algebraic expression for the word phrase " 1/4 of the sum of...

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  15. What's the Error? A student wrote an algebraic expression for “5 less ...

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  16. Write About it Shashi used addition to solve a word problem about the ...

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  17. Write an expression for the sum of 1 and twice a number n. If you let ...

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  18. Will the value of 11x for x = -5 be greater than 11 or less than 11? E...

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  19. Match Column I with Column II in the following:

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  20. Express the following properties with variables x, y and z. (i) Comm...

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