Which is the solution for log(4x-1)=log(x+1)+log2?
2 answers:
Answer:
It's x=3/2
Step-by-step explanation:
Took it just now
Answer:
x = 1.5
Step-by-step explanation:
Solution
- log(4x - 1) - log(x+1) = log2 log(x + 1) was subtracted from both sides
- log[(4x - 1)/log(x+1)] = log2 Subtaction of logs means division
- (4x - 1) / (x + 1) = 2 Take the antilog of both sides
- 4x - 1 = 2(x + 1) Remove the brackets
- 4x - 1 = 2x + 2 Add 1 to both sides
- 4x = 2x + 3 Subtract 2x
- 4x - 2x = 3
- 2x = 3 Divide by 2
- x = 3/2 Answer
Check
<em><u>Left Hand Side</u></em>
- log(4*1.5 - 1)
- log(6 - 1)
- log(5)
<em><u>Right Hand Side</u></em>
- log(1.5 + 1) + log(2)
- log(2.5) + log(2)
- log2*2.5
- log 5
And they check
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For this, the number we are looking for is x.
use this formula... 17 - 3 = 2x
therefore, 14 is your doubled number.
14 divided by two is 7.
your mystery number is 7
16x²=(4x)², 9=3², 24x=2*4x*3
so this is a perfect square: (4x+3)²
Answer: 707 km/h
Step-by-step explanation:
let c = speed of current
16.5 + c = speed of sailboat downstream
16.5 - c = speed of sailboat upstream
distance = travel time * speed
﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋
2(16.5 + c) = 5(16.5 - c)
33 + 2c = 82.5 - 5c
7c = 49.5
c = 7.07 km/h
4/52
then u would divide both numbers by 4 and get
1/13
The correct answer is
<span>a4b<span>6 I think also your question is missed up next time fix it</span></span>
