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3 years ago

6

Determine the function which corresponds to the given graph. (3 points) a natural logarithmic function crossing the x axis at ne

gative two and y axis at one. The asymptote is x = -3

1 answer:

Mekhanik [1.2K]3 years ago

5 0

Answer:

$y=\log_3{(x+3)}$

Step-by-step explanation:

The parent log function has a vertical asymptote at x=0, so the asymptote at x=-3 indicates a left shift of 3 units.

The parent log function crosses the x-axis 1 unit to the right of the vertical asymptote, which this one does, indicating there is no vertical shift.

The parent log function has an x-value equal to its base when it has a y-value of 1. Here, the y-value of 1 corresponds to an x-value 3 units to the right of the vertical asymptote, so the base of this logarithm is 3.

The function is ...

$\boxed{y=\log_3{(x+3)}}$

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Step-by-step explanation:

See attachment for complete question

Let the position of the submarine be represented with X

Given

$AB = 1425$

$\angle A = 59^{\circ}$

$\angle B = 47^{\circ}$

First, we calculate angle at X.

$\angle X + \angle A + \angle B = 180$

$\angle X + 59^{\circ} + 47^{\circ}= 180^{\circ}$

$\angle X = 180^{\circ} -59^{\circ} - 47^{\circ}$

$\angle X = 74^{\circ}$

Solving (a): Distance AX: The distance between ship A and the submarine

To do this, we apply sine formula which states

$\frac{a}{sin\ A} = \frac{b}{sin\ B} = \frac{c}{sin\ C}$

In this case:

$\frac{AB}{sin\ X} = \frac{AX}{sin\ B}$

Substitute values for AB, $\angle X$ and $\angle B$

$\frac{1425}{sin(74^{\circ})} = \frac{AX}{sin(47^{\circ})}$

Make AX the subject

$AX = \frac{1425}{sin(74^{\circ})} * sin(47^{\circ})$

$AX = \frac{1425}{0.9613} * 0.7314$

$AX = \frac{1425 * 0.7314}{0.9613}$

$AX = \frac{1042.245}{0.9613}$

$AX = 1084.20$

Solving (b): Distance BX: The distance between ship B and the submarine

To do this, we apply sine formula which states

In this case:

$\frac{AB}{sin\ X} = \frac{BX}{sin\ A}$

Substitute values for AB, $\angle X$ and $\angle A$

$\frac{1425}{sin(74^{\circ})} = \frac{BX}{sin(59^{\circ})}$

Make BX the subject

$BX = \frac{1425}{sin(74^{\circ})} * sin(59^{\circ})$

$BX = \frac{1425}{0.9613} * 0.8572$

$BX = \frac{1425* 0.8572}{0.9613}$

$BX = \frac{1221.51}{0.9613}$

$BX = 1270.69$

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