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3 years ago

Please give me the correct answer

Mathematics

2 answers:

11Alexandr11 [23.1K]3 years ago

6 0

Answer:

Step-by-step explanation:

i think the 4th is the answer

Lyrx [107]3 years ago

5 0

Bottom right is correct answer

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Solve using law of sines or law of cosines!

malfutka [58]

Answer:

Part 5) The length of the ski lift is $1.15\ miles$

Part 6) The height of the tree is 18.12 m

Step-by-step explanation:

Part 5)

Let

A -----> Beginning of the ski lift

B -----> Top of the mountain

C -----> Base of mountain

we have

$b=0.75\ miles$

$A=20\°$

$C=180\°-50\°=130\°$ ----> by supplementary angles

Find the measure of angle B

Remember that the sum of the interior angles must be equal to 180 degrees

$B=180\°-A-C$

substitute

$B=180\°-20\°-130\°=30\°$

Applying the law of sines

$\frac{b}{sin(B)}=\frac{c}{sin(C)}$

substitute

$\frac{0.75}{sin(30\°)}=\frac{c}{sin(130\°)}$

$c=\frac{0.75}{sin(30\°)}(sin(130\°))$

$c=1.15\ miles$

Par 6)

see the attached figure with letters to better understand the problem

Applying the law of sines in the right triangle BDC

In the right triangle BDC 20 degrees is the complement of 70 degrees

$\frac{BC}{sin(70\°)}=\frac{x}{sin(20\°)}$

$BC=(sin(70\°))\frac{x}{sin(20\°)}$ -----> equation A

Applying the law of sines in the right triangle ABC

In the right triangle ABC 50 degrees is the complement of 40 degrees

$\frac{BC}{sin(40\°)}=\frac{x+15}{sin(50\°)}$

$BC=(sin(40\°))\frac{x+15}{sin(50\°)}$ -----> equation B

Equate equation A and equation B and solve for x

$(sin(70\°))\frac{x}{sin(20\°)}=(sin(40\°))\frac{x+15}{sin(50\°)}\\\\2.7475x=0.8391(x+15)\\\\2.7475x=0.8391x+12.5865\\\\2.7475x-0.8391x=12.5865\\\\x=6.60\ m$

Find the value of BC

$BC=(sin(70\°))\frac{6.6}{sin(20\°)}$

$BC=18.12\ m$

therefore

The height of the tree is 18.12 m

5 0

4 years ago

Negative 32 to the power of 3 over 5

marusya05 [52]

Answer:

Exact form

-32768/5

Decimal Form:

−6553.6

Mixed Number Form:

−6553 3/5

Step-by-step explanation:

Hope this helps :)

Have an amazing day <3

Pls mark brainliest :p

And also if you have more questions like this use math.way it'll help :)

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2 years ago

Read 2 more answers

The early version of a cell phone was 93 millimeters

Basile [38]

It is 78.12
Explanation 16 percent of 93 is 78.12

3 0

4 years ago

Answer to this question

seropon [69]

The answer is A hope this helps

4 0

4 years ago

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UJ 1641"

Alekssandra [29.7K]

Answer:

Step-by-step explanation:

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3 years ago

Please give me the correct answer ​

Please give me the correct answer