150 people attend a concert. There were 30 more adults than children at the concert. There were 20 more men than women. What was the ratio of the number of men to the number of women to the number of children?

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212