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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.


Formats Info Page Quiz Review
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1.

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

2.

The sum of the parallel sides (a and b) of a trapezium is twice the area (A) divided by the distance (d) between the parallel sides.
 
Hint      

3.

Weight (W) is the product of the mass (m) of a body and the acceleration due to gravity (g).
 
Hint      

4.

Pressure (P) is the force (F) divided by the area (A).
 
Hint      

5.

Volume (V) of a cube equals the cube of the length of an edge (a).
 
Hint      

6.

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

7.

Distance traveled (s) is the product of speed (u) and time (t).
 
Hint      


 
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