10. an uncharged metal rod brought close to but not touching the cap
of a charged electroscope causes a decrease in the divergence
of the leaf. explain.

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Which expression is rational? 6. , square root two, square root 14, square root 49