Consider the system ar + 4x2 = 21 2. use cramer's rule to find all values of a so that 1 + x2 = -1 the system has a unique solution, then solve for the unique solution in terms of a. simplify your answer. 2) (6 points) let a = [ 1 0 1 -2 2 -11 3 1 -1 0 use the adjoint formula to find a-1

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655