Which number is written using standard scientific notation

A. 10.29 x 10^3
B. 40 x 10^9
C. 0.1 x 10^-1
D. 2 .98 x 10^11

The answer is

D) 2.98 x 10^11

Explanation:

To be written in scientific notation, the first number or the number being multiplied by 10^# must be written like this Ex. 1.0 2.0 3.0 etc. In other words it must have one and only one digit to the left of the decimal and answer choice D is the only answer choice that meets the criteria.

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…

i think that d. wind is the answer.   i missed the question when i answered a. currents.