Answer:
15 seconds
Step-by-step explanation:
Because the split id 25% and 75%, we could create another average pretending that there are four kids, one who ran in 12 seconds, and three who ran in 16.
Equation for averages: (a₁ + a₂ + a₃ + ... )/ n
Plug in:<em> (12 + 16 + 16 + 16)/4</em>
Add: 60/4
Divide: 15 seconds
Answer:
C. R is the midpoint of PQ.
Step-by-step explanation:
Given that segment PQ is bisected at point R by MN.
It means PQ is divided into two parts at point R by the segment MN.
That is, PR = RQ
Hence, R is the midpoint of PQ.
It is not given that the segment MN is bisected by PQ.
So, R need not be the midpoint of MN.
Please refer to the attached figure for better understanding.
