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Margarita [4]
3 years ago
12

What is the best approximation of the length of segment QS? (Note: cos 80° = 0.17)

Mathematics
1 answer:
matrenka [14]3 years ago
6 0

Answer: QS=11.8cm


Step-by-step explanation:

1. You have the following information:

- The lenght of RS is 2 centimeters.

- The angle m∠S=80°.

- Cos80°=0.17

2. Therefore, you can calculate the lenght of the segment QS as following:

cos80=\frac{adjacent}{hypotenuse}

adjacent=2cm\\hypotenuse=QS\\cos80=0.17

3. Substitute values and solve for QS:

0.17=\frac{2cm}{QS}\\QS=\frac{2cm}{0.17} \\QS=11.76cm

4. To the nearest tenth:

QS=11.8cm

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This meant that for reflecting across the x axis, (x,y)->(x,-y)

For y axis its the opposite, just flipping to the side.

This meant that for reflecting across the y axis, (x,y)->(-x,y)

7 0
3 years ago
A radio disc jockey has 7 songs on this up coming hour's playlist: 2 are rock songs, 2 are reggae songs and 3 are country songs.
SVETLANKA909090 [29]

Answer:

Probability that song selected after first selection is rock = 2/7

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Step-by-step explanation:

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3 years ago
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FrozenT [24]

Answer:

(-2,\, 0).

Step-by-step explanation:

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In this question:

Point to dilate: (x,\, y) = (-8,\, 0).

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5 0
3 years ago
a hot air balloon is at an altitude of 240 feet. the balloon descends at 30 feet per minute. what equation gives the altitude y,
Rina8888 [55]
To solve this problem you must follow the steps below:

1. The problem says that:

 - The<span> hot air balloon is at an altitude of 240 feet.
 - It descends at 30 feet per minute.

 2. Therefore, you have:

 x: the time in minutes.
 y: the altitute in feet.

 3. Keeping all this information on mind, you can write the following equation:

 y=240-30x

 4. Therefore, as you can see, the answer is:
</span>
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6 0
3 years ago
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