Answer:
Step-by-step explanation:
In 2x/(x^2 - 1)1/2
Apply the property of natural log
ln x^m = m ln(x) move the exponent before ln
ln(m/n)= ln m - ln n
multiply 1/2 inside the terms
$8.07 is 30% of what number?
2 answers:
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441 is odd, so we can't divide it by 2.
Since the sum of its digits is , which is divisible by 3, we can divide 441 by 3, and we have
Which is still divisible by 3, because . We have
49 is not divisible by 3 anymore, nor by 5 (it doesn't end with 0 or 5).
It is divisible by 7 though, we have
and finally,
So, the factorization of 441 is
Answer:
x = 31.2
Step-by-step explanation:
x - 19.7 = -4.1
x = 15.6 --- add 19.7 to both sides to get rid of -19.7
x = 31.2 --- multiply both sides by 2 to get rid of