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kirill [66]
3 years ago
7

4. A six-meter-long ladder leans against a building. If the ladder makes an angle of 60° with the

Mathematics
2 answers:
ankoles [38]3 years ago
7 0

Answer: the answer is simply 5.2cm

Step-by-step explanation:

serious [3.7K]3 years ago
5 0
Rather than memorize sines and cosines of various common triangles, I prefer to remember the simple derivation of those formulas…

Imagine that the wall is a mirror, so you have one ladder leaning against the wall and you also have the reflection of that ladder leaning behind it. Now the ladder is 6m long, its reflection is 6m long, and if the distance between their bases is also 6m then you have a 60–60–60 equilateral triangle. And, good news, the problem says that the base angle is 60 degrees. So the real part in front of the mirror is half of the equilateral triangle, which means the distance from the base to the mirror is 3m. And then the height is sqrt(36–9) = sqrt(27) = 3*sqrt(3).

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What is 5-2+5-54-3+405+12-9
Ad libitum [116K]

Answer:

359

Step-by-step explanation:

5-2+5-54-3+405+12-9=359

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2 years ago
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A gram is 300 times smaller than kilogram true or false
tino4ka555 [31]
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3 years ago
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Write an equation in slope-intercept form from the linear inequality graphed in the picture.
stepladder [879]

Answer:

  • equation: y = x+3
  • inequality: y < x+3

Step-by-step explanation:

The slope of the line is 1 unit of rise for 1 unit of run, so ...

  m = rise/run = 1/1 = 1

The y-intercept is 3 grid lines above the x-axis, so is (0, 3).

Then the equation of the line is ...

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The inequality has that line as a boundary, but the y-values on the line are not part of the solution space. Only y-values below the line (less than those on the line) are in the solution. The inequality is ...

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3 0
3 years ago
Plz help i need this done now.
tatuchka [14]

Answer:

infinite solutions

Step-by-step explanation:

4x+4(3x+7) = 8(2x-3) +52

Distribute

4x+12x+28 = 16x-24+52

Combine like terms

16x+28 = 16x +28

Subtract 16x from each side

16x-16x+28 = 16x-16x +28

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8 0
3 years ago
What is 2.7(7.8) Please show work I don't understand this question thank you!
kumpel [21]

multiplication? then...

2.7 * (7.8) = 21.06

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