The answer in 3 tenths and 1 hundredths is 0.31
The number is 2 and if u are not sure how to do this go to this website mathisfun.com
If the number after the decimal is greater than and equal to 5 round up if not round down
Assuming 0.4 is in fact, 2 divided by 5 (and not an approximation of some number that would require an infinite amount of decimal places to exactly express), then multiplication by 0.4 is the same as multiplying by 2 and dividing by 5.
This means that multiplying any rational number by 2/5 will yield another rational number (as given x/y as an input, where x and y are integers, and multiplying it by 2/5 giving 2x/5y, will mean that 2x and 5y are also integers, and the result is also rational)
If we multiply an irrational number by 2/5, however, the result will be irrational.
So your answer is any number not in the set of rational numbers, multiplied by 0.4, will yield an irrational number.
1050 × 100 ÷ 30 would be what you plug into a calculator (if you have one) to get the answer.
100% = 3500.
