A local kids play sold 8 adult tickets and 9 child tickets for a total of $205. On dat two, they sold only 4 adult tickets and 3 child tickets for a total of $83. What was the price of each kind of ticket?

One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.