I need help on my IXL

Mathematics

2 answers:

Advocard [28]3 years ago

6 0

i dont know i didnt get it

i hope someone answered

Mice21 [21]3 years ago

4 0

Start:
348 + 580 = 928
348/928 = .375 x 100 = 37.5% with narrow shells
580/928 = .625 x 100 = 62.5% with round shells
End: 564 + 236 = 800
564/800 = .705 x 100 = 70.5% with narrow shells
236/800 = .295 x 100 = 29.5% with round shells

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In the local frisbee league, teams have 7 members and each of the 4 teams takes turns hosting tournaments. At each tournament, e

mars1129 [50]

There are 4 teams in total and each team has 7 members. One of the team will be the host team.

Tournament committee will be made from 3 members from the host team and 2 members from each of the three remaining teams. Selecting the members for tournament committee is a combinations problem. We have to select 3 members out 7 for host team and 2 members out of 7 from each of the remaining 3 teams.

So total number of possible 9 member tournament committees will be equal to:

$7C3 \times 7C2 \times 7C2 \times 7C2\\ \\ = 324135$

This is the case when a host team is fixed. Since any team can be the host team, there are 4 possible ways to select a host team. So the total number of possible 9 member tournament committee will be:

$9 \times 324135\\ \\ =2917215$