If the number of significant digits is known or not specified particularly, then the accepted engineering standard is to use -------- significant digits.Group of answer choicestwofouronethree

What is the number of significant digits in

Number of significant digits in 0.0028900 is ______

The number of significant digits in 1559.00 is ____

Which of the following are always significant digits?  Select all that apply; choosing incorrect answers will reduce credit.Group of answer choicesZeroes that trail in a non-decimal whole number value.Zeroes that lead (in the beginning of) in a decimal value.Zeroes that are in between nonzero digits.Zeroes that trail in a decimal value.

Calculate and round to the correct number of significant digits.8. 37.64 cm 12.5 cm9. 3.5 ft. × 4.218 ft.10. 3.45 in. + 4.2 in.