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jasenka [17]
3 years ago
14

Please help me now please I will mark you brainliest

Mathematics
1 answer:
maxonik [38]3 years ago
5 0

Answer:

BC = 15.01

Step-by-step explanation:

Angle A is given.

For angle A, BC is the opposite leg.

For angle A, AC is the adjacent leg.

The trig ratio that relates the opposite leg to the adjacent leg is the tangent.

In general, for angle X,

\tan X = \dfrac{opp}{adj}

In our problem,

\tan A = \dfrac{BC}{AC}

\tan 65^\circ = \dfrac{BC}{7}

BC = 7 \tan 65^\circ

BC = 15.01

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Answer:

She should take 112 steps west  

Step-by-step explanation:

* Lets explain the relation between the four directions

- North and South on the same line by in opposite directions

- East and West on the same line by in opposite directions

- East and West are perpendicular to the North and South

* Now lets study the situation i the problem

- Sally 100 steps due to South from the starting point

- Then she walk West when she gets the next clue

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∵ The South is perpendicular to the West

- Lets consider her trip is a right angle triangle ABC, where AB

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∵ AB = 100

∵ AC = 150

∵ m∠B = 90°

- By using Pythagoras theorem

∵ BC = √(AC² - AB²)

∴ BC = √(150² - 100²) = 50√5 = 111.8 steps

* She should take 112 steps west  

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3 years ago
4.) Select ALL equivalent expressions to 5x – 5.5. a) 5x -55 c) 5(x - 1.1) b) 2x - 3 + 3x - 2.5 ) 5.5(x - 1)​
lara [203]

Answer:

1. (-125 a - 5.75) x + b c (605 x - 550 x^2) + 10.75

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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2.

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