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Calculate without using a calculator log 25 + log 40 On of the rules of logarithms says that the sum of two logs is equal to the log of the product of the two numbers  therefore log 25+log 40 =... 
Answered a Question in Math
With out getting into the semantics of whether the width can be longer than the length  if we write the equation 2l=w (two lengths equal one width) and the equation 2l+2w=42 and substitute 2l from... 
Answered a Question in Math
The area of a circle is found by using the formula A=PiR^2 so a circle with an area of 49pi, 49 must be the radius squared (R^2) The sqrt(49)=7 so the radius should be 7, the diameter is twice the... 
Answered a Question in Math
A cube has 6 sides, so each side must have an area of 9 (54/6=9) the area of a side is found by multiplying the length of two edges together, so the length of one edge must be sqrt(9) which equals... 
Answered a Question in Math
There are 6 numbers on the die, 1, 2, 3, 4, 5, 6, of those 6 numbers only 2 are multiples of 3, 3 and 6 (3*1, and 3*2) so the probability of rolling a multiple of 3 is 2/6 or reduced, 1/3
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