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Is one third a good estimation for the decimal 0.3?
It depends upon for what you need the estimation. However, 0.3 is exactly 3/10 which is a much more useful estimate (if it could be called one) as dividing a non-repeating decimal number by 10 guarantees an exact answer in decimals whereas dividing by 3 (or multiplying by 1/3 which is the same) can lead to repeating decimals which can only be approximated as a terminating decimal.
72 percent of 25 students are good in mathematics.how many are not good in mathematics?
The answer is 10 72% = 3/5 = 0.6 25 x 0.6 = 15 25 - 15 = 10
What is the answer to the systems of equations x minus y equals 10 x plus y equals 4?
X - Y = 10 X + Y = 4 -------------------+ ( add them ) 2X = 14 X = 7 ----------find Y in one of the equations; top looks good 7 - Y = 10 - Y = 3 Y = - 3 ---------------check both equations for consistency 7 - (- 3) = 10 7 + 3 = 10 10 = 10 ------------checks in top 7 + (- 3) = 4 7 - 3 = 4 4 = 4 ------------checks and is consistent (7, - 3) ( the answer )
On a farm there are horses and three legged cows there are a total of 60 heads and 213 legs how many horses are on the farm?
51 horses of which there are 3 cows with 2 heads and three legs or since there are no 3 legged cows there are 60 horses
Solve x plus 3 equals 10?
X + 3 = 10. X + 3 - 3 = 10 - 3 X = 7 Double check your solution. X + 3 = 10 7 + 3 = 10 10 = 10 So X + 3 = 10 when X = 7.
