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To write 0.025 in scientific notation, you can express it as 2.5 x 10^-2. The decimal point is moved two places to the right, and the exponent represents the number of times the decimal point was shifted.
To write sixteen and seven tenths in decimal form, you would write it as 16.7. The whole number 16 represents the number of complete units, and the decimal .7 represents the seven tenths. This decimal form signifies a total of 16 units and 7 tenths, making up the number 16.7.
If the number is accurate to two decimal places then you write it exactly as in the question.
The square root of pi is a finite number. However, it is an irrational number. That implies that if you try to write it out as a decimal number, it will stretch out to an infinite number of decimal places to the right of the decimal point.
To write 1.73 in words, you would say "one point seven three." In this case, "one" represents the whole number 1, "point" indicates the decimal point, "seven" represents the digit 7 after the decimal point, and "three" represents the digit 3 after the decimal point.