Is the ratio 25 to 16 proportional to the ratio 5 to 4

If you double Lucien's age and then subtract 6, you get Paul's age. 2 years ago the sum of their ages was 29. How old is each person?

You plan to construct a confidence interval for the mean / muμ of a Normal population with (known) standard deviation / sigmaσ.

25 people apply for a job, 15 men and 10 women. they will hire 10 people, with 40% of them women. how many different staff selections are possible?

Lana makes $8 an hour plus $12 an hour for every hour of overtime. Overtime hours are any hours more than 40 hours for the week.

Find the zeros of the function by using the Quadratic Formula: f (x) = X^2 + 7x + 9

What are the chances of getting heads 10 times in a row in a coin toss?

Which expression is equivalent to 15 (n+3/n) ? £ N=10

Reduce to simplest form. -5/9 + (-7/12)

Triangle ABC is a right triangle where B is the right angle, AB = x, and BC = x. What could be the first step of a proof BD of the triangle divides the hypotenuse into two segments of equal length?

Tommy plotted the opposite of one. Alicia plotted the opposite of two. Which Number is greater in value? Explain.