4. How fast was a driver going if the car left skid marks that were 32 feet long on dry concrete? (The coefficient of friction is 1.02)?
73 mph
49 mph
Oo oo
38 mph
31 mph

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

Someone . me. compound probability

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?