4. The mean life of a battery is 50 hours with a standard deviation of 6 hours with an approximately normal shape. The
manufacturer advertises that they will replace all batteries that last less than 40 hours. If 50,000 batteries were
produced, how many should they expect to replace? Use the population standard deviation.

Use circumcenter theorem to solve for the given values

This is about circle theorems. someone asap : (

City l has a temperature of −3 °f. city m has a temperature of −7 °f. use the number line shown to answer the questions: number line from negative 8 to positive 8 in increments of 1 is shown. part a: write an inequality to compare the temperatures of the two cities. (3 points) part b: explain what the inequality means in relation to the positions of these numbers on the number line. (4 points) part c: use the number line to explain which city is warmer. (3 points)