Sierra has 30 yards of fabric. she plans to use 40% of fabric to make a flag for a social studies project. how many yeards of fabric will she use?

Abag of popcorn contains 483 calories and servers 3.5 people. how many calories are in each serving.

Based on what i know about mean, this doesn't add up.

Question part points submissions used suppose that 100 lottery tickets are given out in sequence to the first 100 guests to arrive at a party. of these 100 tickets, only 12 are winning tickets. the generalized pigeonhole principle guarantees that there must be a streak of at least l losing tickets in a row. find l.