Asprinter explodes out of the starting block with an acceleration of +4.2 m/s2, which she sustains for 0.9 s. then, her acceleration drops to zero for the rest of the race. (a) what is her velocity at t = 0.9 s. m/s (b) what is her velocity at the end of the race? m/s

7. see worksheet 1 for values of variables x1, x2 and x3 and answer the following questions: a. for each variable find the mean, median, coefficient of skewness, range and population standard deviation. b. compared to variable x1, how are the mean and median affected by extreme values (outliers) seen in x2 and x3. c. is the median or mean the better measure of location for x2 and x3? explain. d. explain the differences in the magnitudes of the skewness coefficients for the three variables. e. what is the relationship between the range and standard deviation looking across the three variables?

Acid rain is caused by human activity. select the best answer from the choices provided t f

Which is gerrymandering a problem for the house of representatives but not the senate? a.) members of the house are greatly influenced by their political parties. b.) senators serve longer terms than members of the house. c.) members of the house are more influenced by changes in public opinion. d.) senators are elected in statewide elections rather than in specific districts.