What is - 5/6k greater than equal to -15?

The answer is k is greater than or equal to 18

-5/6k≥--15
÷-5/6   ÷-5/6
k≤18
switch the sign because you divide by a negative number

To do 15 ÷ -5/6 you must multiply by the reciprocal

-15      -6        90    
-    x    -    =    -    = 18
1        5          5

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.