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Zepler [3.9K]
3 years ago
15

Which expressions are equivalent to 78 • 7? Select all that apply. HINT: There are 3 correct answers.

Mathematics
2 answers:
Snezhnost [94]3 years ago
8 0

Answer:

None because 78 * 7 = 546

Step-by-step explanation:

shepuryov [24]3 years ago
8 0
I only got the answer for d

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An airplane pilot over the Pacific sights an atoll at an angle of depression of 10°. At this time, the horizontal distance from
Alex17521 [72]
The question was posted incomplete.

This is the part missing:

<span>What is the height of the plane to the nearest meter?

Answer:  559 m.

Explanation:

1) The horizontal distance between the plane and tha atoll makes a right triangle with the height, with the depression angle between the two legs.

2) Therefore, you can use the tangent trigonometric ratio:

tan(10°) = opposite-leg / adyacent-leg = height / horizontal distance

⇒ height = horizontal distance × tan (10°)

⇒ height = 3,172 m × tan(10°) = 559.31 m, which rounded to the nearest m is 559
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3 years ago
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Hoochie [10]

Question 1:

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P - 2w = 2l

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178 / 2 = 89

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28-53= l -25l
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