Answer:
A) 5.4 cm
Step-by-step explanation:
Length of mid segment = (sum of parallel sides )/2
Sum of parallel sides = PQ + SR = 9 + SR

D=rt
So you're going to plug in the values listed: r= 9 1/2 and t=1 3/4
This will give you:
d=(9.5)(1.75)
Then you solve:
d=16.625
You should probably convert that decimal answer into a fraction since you're question gave it to you as a fraction.
Answer:
If she doubles it then it will be 4: 10
If she triples it then it'll be 6: 15
Hope that helps!
1inch= 0,8(3) feet
5,400*0,8333 : 5280= 4,4999 :5280=0, 085 miles