What is the next to numbers in the pattern 4.15,6.3,8.45

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Without multiplying, tell which product is larger and why. 5 × 1/3 or 5 × 2/3 a)5 × 1/3 because 1/3 is less than 2/3 b) 5 × 1/3 because 1/3 is greater than 2/3 c) 5 × 2/3 because 1/3 is less than 23 d) 5 × 23 because 1/3 is greater than 2/3