What is 427,000 in scientific notation?

4.27 * 10 ^5

Step-by-step explanation:

427,000

The number is written in the form

a * 10 ^b

where a is a number between 1 and less than 10

Move the  decimal to the left 5 places

427,000.   becomes 4.27000

a becomes 4.27 and b is 5 since we moved the decimal to the left

4.27 * 10 ^5

427000 written as 4.27 × 10^5 in scientific notation because the purpose of scientific notation is for scientist to write very large, for very small, number with ease.

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.