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2 years ago

PLEASE HELP!!! I REALLY NEED SOMEONE TO ANSWER THIS I HAVE ATTACHED A PICTURE

Mathematics

1 answer:

earnstyle [38]2 years ago

7 0

Answer:

2.3 hours, or 2 hours & 18 minutes

Step-by-step explanation:

we are trying to find h when d is 56.68, so I replaced d with 56.68

$56.68=24.6h+0.1\\$

subtract 0.1 from both sides

$56.58=24.6h$

divide both sides by 24.6

$2.3=h$

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There are 3 islands A,B,C. Island B is east of island A, 8 miles away. Island C is northeast of A, 5 miles away and northwest of

Nostrana [21]

Answer:

The bearing needed to navigate from island B to island C is approximately 38.213º.

Step-by-step explanation:

The geometrical diagram representing the statement is introduced below as attachment, and from Trigonometry we determine that bearing needed to navigate from island B to C by the Cosine Law:

$AC^{2} = AB^{2}+BC^{2}-2\cdot AB\cdot BC\cdot \cos \theta$ (1)

Where:

$AC$ - The distance from A to C, measured in miles.

$AB$ - The distance from A to B, measured in miles.

$BC$ - The distance from B to C, measured in miles.

$\theta$ - Bearing from island B to island C, measured in sexagesimal degrees.

Then, we clear the bearing angle within the equation:

$AC^{2}-AB^{2}-BC^{2}=-2\cdot AB\cdot BC\cdot \cos \theta$

$\cos \theta = \frac{BC^{2}+AB^{2}-AC^{2}}{2\cdot AB\cdot BC}$

$\theta = \cos^{-1}\left(\frac{BC^{2}+AB^{2}-AC^{2}}{2\cdot AB\cdot BC} \right)$ (2)

If we know that $BC = 7\,mi$ , $AB = 8\,mi$ , $AC = 5\,mi$ , then the bearing from island B to island C:

$\theta = \cos^{-1}\left[\frac{(7\mi)^{2}+(8\,mi)^{2}-(5\,mi)^{2}}{2\cdot (8\,mi)\cdot (7\,mi)} \right]$

$\theta \approx 38.213^{\circ}$

The bearing needed to navigate from island B to island C is approximately 38.213º.

8 0

2 years ago

WILL GIVE BRAINLIEST. Tickets to a show cost $3 for students and $7 for adults. If 250 tickets were sold and ticket sales totale

Diano4ka-milaya [45]

Answer:

88 adult tickets were sold

Step-by-step explanation:

3s + 7a = 1102

(s + a = 250)-3

3s + 7a = 1102

+ -3s - 3a = -750 Add these equations together

4a = 352 Divide both sides by 4

a = 88

Now plug this into the second equation

s + a = 250

s + 88 = 250

- 88 - 88 Subtract 88 from both sides

s = 162

If this answer is correct, please make me Brainliest!

7 0

2 years ago

Read 2 more answers

Round $56.29 to the nearest dollar.

jeka57 [31]

Answer:

$56

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Any pointers on how to solve (-124) + 25 + (-87)

Elena-2011 [213]

|-124| + 25 + |-87|

124+25+87

236

8 0

3 years ago

Pls help me plssss help asap

Anestetic [448]

Answer:

1) 15

2) 18

3) 72

8 0

2 years ago