Which of the following numbers are written in scientific notation? 0.641 x 10^3
2 x 10^1
9.999 x 10^4
4.38 x 5^10

2 x 10^1

9.999 x 10^4

Step-by-step explanation:

when using scientific notation

M x 10^X

M has to be between 1(inclusive) and 10

and has to be multiplied by ten to the power of x

2 x 10^1

9.999 x 10^4

Step-by-step explanation:

For a number to be written in Scientific Notation, it has to abide to 2 rules:

1) It has to be within 1 and 10.

2) It has to be multiplied by ten to the power of a number(x)

Ex:

1.473 x 10^7 is written in Scientific Notation

6.9 x 17^3 is not written in Scientific Notation

0.372 x 10^39 is not written in Scientific Notation

This all means that 4.38 x 5^10 and 0.641 x 10^3 are not written scientific notation, as they do not abide to all the rules of the equation to be written in Scientific Notation, meanwhile 2 x 10^1 and 9.999 x 10^4 are written in Scientific Notation, as they abide to all rules of an equation to be written in Scientific Notation.

all group life insurance is term insurance. actually it is annual renewable term and it is rated on the average age and claims experience of the entire group, which is called "experience rating." remember, this type of insurance has a 31-day grace period and is convertible to whole life upon leaving employment. a contributory group plan requires that both the employer and the employees pay part of the premium. at least 75% of those eligible must participate, so the group is sure to get most of the healthy employees as well as those that are sick.

step-by-step explanation: