If a={3,5,7,9} and
b = {1, 2, 4, 6,7,9)
find the intersection: a b.
a. {7,9}
b. {2,4}
c. {1,3,5}
d. {1,2,3,4,5,6,7,9}

The ratio of men to women working for a company is 4 to 5 . if there are 90 women working for the company, what is the total number of employees?

Kathy spent 5/8 of her money on books and another 1/6 of her money on stationeries.what fraction of kathy’s money was left?

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.