By inspection, LMNO is similar to PQRS.
For similar figures, corresponding sides are proportional, therefore
LM/PQ=MN/QR
Substituting values
4/2=6/c
Cross-multiply
4c=6*2=12
c=12/4=3
K value = natural log (.5) / half-life
half-life = natural log (.5) / k value
half-life = -.693147 / 0.1011
half-life =
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6.8560534125
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I'd say the k value should be negative AND it should have units.
It looks like you have
Substituting these in to the plane equation, we have
When 
, we get the point
Equal sides and equal angles
Answer:30 tests
Step-by-step explanation:
16=2/3 -4
20=2/3
10=1/3
30tests
