Answer:
Step-by-step explanation:
hello :
circunferencia P=π×d d: el diámetro
d= P/π
d=28.26/3.14 = 9 U
3x -y ⩾ 6
3x - 6 ⩾ y
now, with inequalities, what we do is, we graph the line of 3x - 6 = y, and then we shade the "true region".
if we pick a point on say hmmm (4, 0), namely x = 4 and y = 0, we can plug that in the inequality and see what we get,
3(4) - 0 ⩾ 6
12 - 0 ⩾ 6
12 ⩾ 6
is 12 really greater or equals to 6? well yes, therefore, the point (4, 0) lies on the "true region", since it's true, 12 is indeed ⩾ 6, so, where that point is, we shade.
now, the ⩾ means equals to or greater, and therefore, since the values could also equal the boundary points, the line is a solid line, because it includes the line itself, as well as the shading.
check the picture below.
It doesn’t show pic or question
Answer:
17.5 meters
Step-by-step explanation
I included an illustration of what they are asking for.
- Notice, since the light of the sun is coming from the same place, the shadow angles relative to the ground, X and Z, will be the same. So the triangles formed are similar
- Use SOH CAH TOA to find the angle Z
- This just means when you have an angle in a right triangle, in order to know whether to use Cosine, Sine or Tangent, look at what sides you have
- We have the sides opposite (O) and adjacent (A) to angle Z, so we tangent (T)
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- Now since angle Z equals X, they have the same tangent value
- So we can use that to find the building height, which it the opposite (O)
- Don't forget to use the new adjacent 14m
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