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the answer is JKN = 57

Step-by-step explanation:

JKN is JKL + LKN

we know that LKM = 42, and LKN is half of that because KN bisects LKM (splits into 2 equal parts)

so, LKN is half of 42

LKN = 21

to find JKL, subtract 42 from 78

JKL = 36

36 + 21 = 57

simplifying

7ln(x + 2.8) = 11.2

reorder the terms:

7ln(2.8 + x) = 11.2

(2.8 * 7ln + x * 7ln) = 11.2

(19.6ln + 7lnx) = 11.2

solving

19.6ln + 7lnx = 11.2

solving for variable 'l'.

move all terms containing l to the left, all other terms to the right.

reorder the terms:

-11.2 + 19.6ln + 7lnx = 11.2 + -11.2

combine like terms: 11.2 + -11.2 = 0.0

-11.2 + 19.6ln + 7lnx = 0.0

the solution to this equation could not be determined.

step-by-step explanation:

i searched it on google but it says that the solution to this equation could not be determined but i hope that it you a little.