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Algebra Homework Help : Formulae & Algebraic Relations


Express each of the following statements as a formula.
Type the formula in the input box. Leave no spaces when typing the answer.
Since there are multiple ways of writing an answer, it is possible the computer may mark a correct answer wrong.
So, please always check the answer and explanation.
SEVERAL OF THE FORMULAE BELOW ARE WELL-KNOWN AND WORTH REMEMBERING.


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1.

The sum of the magnitude of the interior angles (A) of a convex polygon divided by 180 equals the number of sides (s) decreased by 2.
 
Hint      

2.

Hundred times the simple interest (I) equals the product of the principal (P), rate per cent per annum (r) and time in years (t).
 
Hint      

3.

The reciprocal of focal length (f) equals the sum of the reciprocals of the object distance (u) and the image distance (v).
 
Hint      

4.

Force (F) is the product of the mass (m) of a body and its acceleration (a).
 
Hint      

5.

Curved Surface area (S) of a right cone is (22/7) times the product of the radius (r) and the slant height (L).
 
Hint      

6.

Surface area (S) of a cube equals six times the square of an edge (a) of the cube.
 
Hint      

7.

Perimeter (P) of an isosceles triangle equals the length of the base (b) plus twice the length of one of the equal sides (a).
 
Hint      


 
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