Answer this and I’ll give more points!! Check whether this binary operation on set Q is both commutative and associative for all a, b € Q
a*b=(a-b)^4

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

How are sas and sss used to show that two triangles are congruent?

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost