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Fudgin [204]
4 years ago
6

Point K is the midpoint of JL. If JK=7x+4 KL=12x−21, what is the length of JL? JL is units long.

Geography
1 answer:
lubasha [3.4K]4 years ago
5 0
This is the concept of algebra, given that K is the midpoint of JL, it implies that JK=KL. Therefore formulating an equality we shall have:
JK=KL
7x+4=12x-21
this can be written as:
12x-21=7x+4
collecting like terms;
12x-7x=4+21
5x=25
dividing both sides by 5 we get:
x=5
therefore:
JK=7x+4
JK=7*5+4=39
But,
JK=LK
therefore
JL=39*2=78

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