20. What is one of the major reasons there are concerns about the future of Social Security?
a) People are making less money now, so they are paying less into Social Security
b) The Social Security tax rate has decreased
c) People are living longer, therefore collecting Social Security longer
d) People can now being getting Social Security payments when they turn 50

In an extensive study involving thousands of British children, Arden and Plomin (2006) found significantly higher variance in the intelligence scores for males than for females. Following are hypothetical data, similar to the results obtained in the study. Note that the scores are not regular IQ scores but have been standardized so that the entire sample has a mean of M 5 10 and a standard deviation of s 5 2. a. Calculate the mean and the standard deviation for the sample of n 5 8 females and for the sample of n 5 8 males. b. Based on the means and the standard deviations, describe the differences in intelligence scores for males and females. what is the primary benefit people receive in exchange for paying premiums to an insurance company What are three techniques that can be used to show that the electron transport chain is found on the matrix side of the inner mitochondrial membrane. Select all that apply. the flowers of the ____ bloom with sunrise and close with sunset. please help! I cant figure this out! Mi familia prefiere________ de viaje a Cuba. (2 points)ircomerorganizarpoder Which statement best completes the diagram?CauseEffectIndia's economy hasgrown rapidly in recentyears.? if side of square is 4.05 find its area ACCORDING TO NEWTON'S THIRD LAW EVERY ACTION HAS EQUAL AND OPPOSITE REACTION BUT THEN WHY DON'T WE FLY WHEN WE FART?? use the order of operations -5 + 3(7.2 - 3.2) What is meant by measurement? l A major component of gasoline is octane when octane is burned in air it chemically reacts with oxygen to produce carbon dioxide and water what mass of carbon dioxide is produced by the reaction of oxygen W=VI. Make V the subject of formula ntitative reasoning 3ples603903601533612315235-8H 24 24 180106030 what type of properties change ina physical change? Give an example to support your answer? pls quick who will give the answer first will get the brainliest The energy source for active transport is ________ , while the force driving facilitated diffusion is ________. Plz Help..!!GERMAN LANGUAGE The distance traveled (in meters) by an insect is modeled by the equation d=0.5t where d is the distance traveled in meters and t is the time in minutes. Find the distance traveled in 27.9 minutes.A. none of theseB. 13.95 metersC. 55.8 metersD. 1.395 meters Help please.. Mansa Musa furthered the spread of Islam throughout the Sahel by building severalA. schoolsB. librariesC. palacesD. mosques