A marble is selected at random from a jar containing 10 red marbles, 70 yellow marbles, and 20 green marbles. Find the theoretical probability that is either red or green. P(red or green)=

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Will give brainliest plz hurry lexie surveyed 4 teenagers to find out approximately how many hours, per week, they read for fun, and how many siblings they have. brooke said she reads about 10 h a week for fun, and that she has 5 siblings. celia said she has 1 brother and 1 sister and reads for fun about 3 h each week. henry said he has 2 brothers and reads for fun about 30 min each week. jude said he doesn't read for fun and has 3 brothers and 3 sisters. use this information to complete the data table. express your answers as whole numbers or decimals. name hours of fun number of siblings brooke celia __ henry jude

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

(60 points) explain this in detail