The book store has 4 sections of Marvel comic books and 3 sections of DC comic books. What is the ratio of sections of Marvel co
mic books to DC comic books?
1 answer:
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Answer:
The answer is below.
Step-by-step explanation:
Answer: The length of JF = 16 units.
Step-by-step explanation:
Given: In triangle DEF, segment DJ is a perpendicular bisector of side EF.
i.e. DJ is perpendicular to EF and DJ divides EF into two equal parts EJ and JF. [The perpendicular bisector is a line that is perpendicular to a line segment and splits it into two congruent segments.]
If EJ is 3y-8 and JF is 7y-40.
Then,
JF= 7(8)-40 =56-40= 16 units
Hence, the length of JF = 16 units.