I WILL GIE AND 50 POINTS PLZ PLZ PLZ HELP ME Select the correct scientific notation form of this numeral using only 2 significant figures.
8,421,032.9266

84 × 10 9
8.4 × 10 10
8.4 × 10 6
None of these

8.4 × 10^6

Step-by-step explanation:

Use floating-point system in which numbers are expressed as products consisting of a number between 1 and 10 multiplied by an appropriate power of 10 (as in 1.591 × 10−20)

Hope this helps <3

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.  

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1