Positive 20 and negative 10 is a net amount of 10. 10 minutes is 1/6 of an hour. 5*1/6=5/6km
When multiplying terms that have the same base (in this case,
) but different exponents, you can add their exponents to make them one term.
In this case, we can add the exponents of
:



A simplified version is
.
Answer:
C.1/2
Step-by-step explanation:
1/3 have siblings and 1/2 of those are girls
1/2 of the siblings are girls