30 POINTS! x + 1 = 2 ÷ x + 1

1 answer:

Semmy [17]3 years ago

3 0

For this case we have the following equation:

$x + 1 = \frac {2} {x + 1}$

We must find the value of $x + 1$ :

Multiplying both sides of the equation by $x + 1:$

$(x + 1) ^ 2 = 2$

Applying square root on both sides of the equation to eliminate the exponent:

$x + 1 = \sqrt {2}$

Answer:

Option B

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Andrei [34K]

Answer:

Step-by-step explanation:

3.920(1.018)ˣ = 5.500

First we can divide both sides by 3.920 to get: (1.108)ˣ = 1.403
Then we can take the natural log of both sides to get: ln[(1.108)ˣ] = ln(1.403)
We can then use logarithmic rules to move the x exponent to the front: xln(1.108) = ln(1.403)
Then we can divide both sides by ln(1.108) to get: $x=\frac{ln(1.403)}{ln(1.018)}$
Then using a calculator we get x = 18.98 ≈19