A swim meet has 13 contestants signed up for the 100-meter butterfly event. The first heat has 6 swimmers. How many different ways can the contestants be arranged in the first heat?

6 swimmers in the first heat can be arranged in 1716 different ways.

Step-by-step explanation:

A swim meet has 13 contestants signed up. To calculate the arrangement of first 6 swimmers in first heat we will use combinations because order doesn't matter.

So to select 6 swimmers out of 13 contestants number of different ways

=

=

=

=

=

= 1716

Therefore, 6 swimmers in the first heat can be arranged in 1716 different ways.

1gm = 1000mg so 0.1gm = 1000mg

first, convert the weight to kg

160lb * 1kg/2.2lb = 72.7kg

next, the dose

72.7kg * 100mg/kg = 7270mg

answer: 40.95

step-by-step explanation: