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iris [78.8K]
4 years ago
9

PLEASE HELP!!!

Mathematics
1 answer:
ANEK [815]4 years ago
3 0

The answer is D an = -5n + 12

Use the formula an = a1 + d(n - 1) to solve

an = 7 + (-5)(n - 1)

an = 7 + (-5n +5)

an = -5n + 12

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4. A 25-foot ladder is placed against the side of a building with the bottom of the ladder 7 feet from the
faltersainse [42]

Answer:

Step-by-step explanation:

The questions asks for how far down the wall does the ladder move, so to say that in another way,   what is the difference between when the ladder is taller up the wall and when it is shorter up the wall.

so figure out what the height of the ladder is up the wall for each of the situations.

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we are told the Hyp and the Adj sides of the triangle

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Cos(Ф) = 7 / 25

Ф = arcCos( 7/25)

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then use

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2) Shorter

Cos(Ф) = 15 / 25

Ф = arcCos( 15 / 25 )

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the ladder moves 4 feel down the wall  :)

8 0
3 years ago
What is the Arc Length for the following circle. Round your answer to 4 decimal places. *
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Answer:

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Step-by-step explanation:

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7 0
3 years ago
Please help me !<br><br> Thank you very much appreciated!! :)
Ket [755]

Which question do you need help on?

6 0
3 years ago
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