Q8. A square has a side length that is 6x and another side length that is 9x -3. What is the value of x? Type the number only.*

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !