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Luda [366]
3 years ago
10

Giving more points to anyone who can answer this! Please show work

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
6 0

Step-by-step explanation:

The angle of depression is measured from the horizontal line of sight, not from the vertical.

The correct equation is:

tan(47°) = 25 / x

x = 25 / tan(47°)

x = 23 feet

LUCKY_DIMON [66]3 years ago
4 0

Answer:

Incorrect angle; 23 feet

Step-by-step explanation:

She has marked the angle incorrectly

Angle of depression is marked between the line of sight and the hypotenuse

The angle she should use is:

90 - 47 = 43

tan(43) = x/25

x = 25tan(43)

x = 23.31287715

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The Values in the table represent a function.
Anna35 [415]

Answer:

  • f(-6) = 8
  • f(3) = -2
  • x = 4

Step-by-step explanation:

An ordered pair is related to function notation by ...

  (x, y)   ⇔   f(x) = y

where <em>f</em> is the function name, and <em>( )</em> enclose the argument(s) of the function.

__

<h3>a)</h3>

The ordered pair (-6, 8) gets translated into the above form as ...

  f(-6) = 8

__

<h3>b)</h3>

We are looking for the f(x) value that has 3 in the x-column.

  f(3) = -2

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<h3>c) </h3>

We are looking for the x value that has -5 in the f(x) column.

  f(4) = -5

  f(x) = -5 when x = 4

8 0
2 years ago
The vertices of polygon ABCD are at A(1, 1), B(2, 3), C(3, 2), and D(2, 1). ABCD is reflected across the x-axis and translated 2
lys-0071 [83]

Answer:

  • A^\prime is at (1, \, 1).
  • B^\prime is at (2, \, -1).
  • C^\prime is at (3,\, 0).
  • D^\prime is at (2, \, 1).

Step-by-step explanation:

To reflect a shape about the x-axis, simply reflect each of its vertex across the x-axis.

The y-coordinate of a point gives the vertical position of the point. On the other hand, the x-axis is horizontal. Reflecting the point would invert the y-coordinate of that point.

For example, reflecting B(2,\, 3) about the x-axis would give (2, \, -3).

Similarly, to move the polygon up by 2 units, simply move every one of its vertex up by 2 units. Keep in mind that the order of the translation does matter. In this question, reflect each point before moving them upward.

To move a point up by 2 units, simply 2 to its y-coordinate. Aftering moving (2, \, -3), the reflection of B, up by two units, the new point would have coordinates (2, \, -1).

\begin{array}{cccccc} & \text{Initial} & & \text{After Reflection} & & \text{After translation} \cr A: & (1,\, 1) & \longrightarrow & (1,\, -1) & \longrightarrow & (1,\, 1) \cr B: & (2, \,3) & \longrightarrow & (2,\, -3) & \longrightarrow & (2, \, -1) \cr C: & (3, \,2) & \longrightarrow & (3, \, -2) & \longrightarrow & (3, \, 0) \cr D: & (2, \, 1) & \longrightarrow & (2, \, -1) & \longrightarrow & (2,\, 1) \end{array}.

6 0
3 years ago
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