Aresearcher wants to find out the average amount of money that united states (us) adults spent on gifts during november and december of the previous year. the researcher administers the survey to 1,000 randomly selected us adults from arizona, asking the question: "how much did you spend on gifts during november and december of last year? " the data collected showed that the mean number of dollars spent per adult was $154. which characteristic of the survey could have created unreliable data?

6.(q^9)^2 a. 2q^18 b. q^18 c. q^81 d.q^11 7.(6q^6)^-4 a. 6q^1296 b. 1296q^2 c. 1/1296q^24 d. 6q^-24 8. what is the value of 12x^-3 y^-1 for x = -1 and y = 5? a. -12/5 b.-10 c.-0 d.5/12 9. (y^-5)^10y^10 a. y^-60 b. y^60 c. y^-150 d. y^150 find the simplified form of each expression. 10. (4/7^5)^2 a.8/14^10 b.16/49^25 c.16/49y^10 d.8/14y^25 11. determine if the number 3.43 times 10^-6 is written in scientific notation. if not, explain. a. yes; the number is written scientific notation. b. no; the first factor is not a number between 1 and 10. c. no; it is not written as a number times a power of 10

Sum is 17 and their difference is 3

Acircle has a circumference of 7.850 units. what is its radius?