I help I can get Thai one

B

Step-by-step explanation:

The scientific notation is symbol or the shorten way to rewrite the number that is too small or too large to write the full number. The scientific notation of a number has the form as the formula below:

c x 10^n

Based on this formula, it can be seen that answer C and D are not the correct answer.

Furthermore, in this formula, c can be any number ranging from 1 to 10 but not including 10 and n has to be an integer number.

So that in answer A, c = 56 > 10 is inappropriate.

In answer B, 1< c = 5.6 < 10 and n = 6

=> B is the correct answer

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.