A swimming pool can be filled by a hose in 8 hours. It can be emptied by a drainpipe in 12 hours. If the drainpipe is open while the tank is filling, find how long it will take to fill the pool. [Hint: The pool could be
mone-eighth filled in one hour.]

Find x & pleeeeaaaassseeee me !

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?