Lines that appear to be tangent are tangent. O is the center of each circle. What is the value of x?​

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

Divide. write in simplest form 41/6 divided by 10