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posledela
2 years ago
13

The tennis team has played 28 matches so far this season. They have won 10 matches so far. How many matches will the team need t

o win for the team to have a 55% success rate?
Mathematics
1 answer:
Scorpion4ik [409]2 years ago
3 0

Answer: they would have to win 22/40 games

Step-by-step explanation:

22 divided by 40 is 0.55 or 55%

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PLEASE HURRY!! WILL GIVE BRAINLIEST
inysia [295]

Trigonometric ratios are useful in calculating the side lengths of a triangle.

  • The length of the zip line is 222.5 ft
  • The height where the ladder rests against the tree is 38.6 ft
  • The distance between the base of the ladder and that of the tree is 10.4 ft
  • The distance between the base of the tree and the spot where the zip line is anchored to the ground is 219.1 ft

<u>(a) Length, z</u>

First we calculate (h) using the following sine ratio

\mathbf{sin(75) = \frac{h}{40}}

Make h the subject

\mathbf{h = 40sin(75)}

Next, we calculate (z) using the following sine ratio

\mathbf{sin(10)= \frac{h}{z}}

Make z the subject

\mathbf{z= \frac{h}{sin(10)}}

Substitute \mathbf{h = 40sin(75)}

\mathbf{z= \frac{40sin(75)}{sin(10)}}

\mathbf{z= 222.5 ft}

Hence, the length of the zip line is 222.5 ft

<u>(b) The height, h</u>

In (a), we have

\mathbf{h = 40sin(75)}

Evaluate

\mathbf{h = 38.6}

Hence, the height where the ladder rests against the tree is 38.6 ft

<u />

<u>(c) The distance, b</u>

To do this, we make use of the following sine ratio

\mathbf{sin(15) = \frac{b}{40}}

Make b the subject

\mathbf{b = 40sin(15)}

\mathbf{b = 10.4}

Hence, the distance between the base of the ladder and that of the tree is 10.4 ft

<u />

<u>(d) Distance, B</u>

To do this, we make use of the following sine ratio

\mathbf{sin(80) = \frac{B}{z}}

Make B the subject

\mathbf{B = z\ sin(80)}

Substitute \mathbf{z= 222.5 ft}

\mathbf{B = 222.5\ sin(80)}

\mathbf{B = 219.1}

Hence, the distance between the base of the tree and the spot where the zip line is anchored to the ground is 219.1 ft

<u />

Read more about trigonometry ratios at:

brainly.com/question/24888715

8 0
3 years ago
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