Answer:
x = 10
Explanation:
Note the following rules before we begin:
2 ln(a) = ln (a²)
ln (a) + ln (b) = ln (ab)
Now, for the given:
ln(20) + ln(5) = 2 ln(x)
ln(20*5) = ln(x²)
ln(100) = ln(x²)
This means that:
100 = x²
Therefore:
either x = 10 .........> acceped
or x = -10 .........> rejected as no negatives are allowed within ln functions
Hope this helps :)
7y - 84 = 2y + 61
-2y -2y
5y - 84 = 61
+84 +84
5y = 145
y = 29
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Answer: 5.25
Explanation:
first find total length of BC, which is 16
Then you do 7/16 which is the scaling proportion.
Then you do 12 x 7/16 = 5.25
I hope this helped!
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- Zack Slocum
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