For trapezoid abcd, e and f are midpoint of the legs. let gh be the median of abfe. find gh

X2 + y 2 = 36 x + y = 6 solve the system of equations.

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

The average length of a king cobra is 3.7 m. the record length is 1.88 m longer than the average. how long is the record holder?