15 - x = 2(x + 3) please anser i donot understand my homework that is in 1 week

1 answer:

4 0

Answer:

x = 3

Step-by-step explanation:

15 - x = 2(x + 3)

15 - x = 2x + 6

15 - x - 2x = 6

-x - 2x = 6 - 15

-3x = 6 - 15

-3x = -9

x = 3

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Anna11 [10]

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5 0

3 years ago

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