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Dima020 [189]
3 years ago
8

An ant is moving around the unit circle in the plane so that its location is given by the parametric equations (cos(Ď€ t), sin(Ď

€ t)). Assume the distance units in the plane are "feet" and the time units are "seconds". In particular, the ant is initially at the point A=(1,0). A spider is located at the point S=(6,0) on the x-axis. The spider plans to move along the tangential line pictured at a constant rate. Assume the spider starts moving at the same time as the ant. Finally, assume that the spider catches the ant at the tangency point P the second time the ant reaches P. (a) The coordinates of the tangency point P=( Correct: Your answer is correct. , Correct: Your answer is correct. ). (b) The FIRST time the ant reaches P is Correct: Your answer is correct. seconds. (c) The SECOND time the ant reaches P is Correct: Your answer is correct. seconds. (d) The parametric equations for the motion of the spider are:
Mathematics
1 answer:
adelina 88 [10]3 years ago
7 0

Answer:

yes


Step-by-step explanation:


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What percent of 153.5 is 33?
Dvinal [7]

Answer:

21.5%

Step-by-step explanation:

Percent = Part/Whole * 100:

\frac{33}{153.5}*100\approx21.5%

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I am Lyosha [343]

Answer:

13 l of 15%, 13 l of 25%, 26 l of 70%

Step-by-step explanation:

solutions:

  • 15%, 25% and 70%

final solution:

  • 52 l of 45%

This includes 0.45*52l= 23.4 l acid

Let's assume:

  • amount of 15% solution= x
  • amount of 25% solution= y
  • amount of 70% solution= z
  • and we have z=2y

so there are 2 equation:

  • x+y+z=52
  • 0.15x+0.25y+0.7z=23.4

or

  • x+y+2y= 52 ⇒ x+3y= 52 ⇒ x= 52- 3y
  • 0.15x+0.25y+1.4y=23.4
  • 0.15x+1.65y=23.4
  • 0.15*(52-3y)+1.65y=23.4
  • 7.8-0.45y+1.65y=23.4
  • 1.2y=23.4-7.8
  • 1.2y= 15.6
  • y=15.6/1.2
  • y= 13 l

--------

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  • z= 2y= 2*13= 26 l
6 0
3 years ago
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