Suppose that the lengths of human pregnancies are normally distributed with a mean of 265 days and a standard deviation of 16 days. Complete the following statements. A) Approximately pregnancies have lengths between 217 days and 313 days.
A) 68%
B) 75%
C) 95%
D) 99.7%

B) Approximately 68% of pregnancies have lengths between days and days.

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?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Write the equation in logarithmic form e^x=403.429