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.
Answer: C. 17.5 feet
Step-by-step explanation:
The attached photo shows the triangle ABC formed by the ladder and the wall. It is a right angle triangle because one of its angles is 90 degrees. The ladder is the hypotenuse of the triangle. To determine the height of the wall, we would find BC by applying Pythagoras theorem
Hypotenuse^2 = opposite ^2 + adjacent^2
18^2 + 4.5^2 + BC^2
BC^2 = 324 - 20.25 = 303.75
BC = √303.75 = 17.5 feet.
