Rosa can paint a room in 12 hours. hanna can paint the same room in 9 hours. how long does it take for both rosa and hanna to paint the room if they are working together?

Reflect the point (7,0) across the y-axis

The probability that a tutor will see 0, 1, 2, 3, or 4 students is given below determine the probability distribution's missing value.

Jane is cooking beans and rice for dinner tonight. she has 4 cans of black beans, 6 cans of red beans, and 3 cans of garbanzo beans in her cupboard. if she grabs a can of beans without looking at the label, what is the probability of her making black beans and rice for dinner?