Madison buys some five-cent stamps and some ten-cent stamps for a total of $1.00. she receives 13 stamps. how many five-cent stamps does she buy?

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?