Points h, j and k lie on a straight line, and j is between h and k. the length of hj= 56 inches, and the length of jk = 2/9 * hk. what is the length of hk ?

Step 1: 6x-10=1; step 2: 6x=11

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.