CAN SOMEONE HELP ME!! I'LL GIVE YOU BRAINLIEST. 25 PTS! 8.3 puzzle time "why did the fraction jump into boiling water"
PLEASEE show work too!!

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base