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2 years ago

I need help starting this word problems

Mathematics

1 answer:

Schach [20]2 years ago

6 0

The cost from the daily fee is $65 \cdot \frac{8 dollars}{1 day} = 520$ dollars. Then, there are $m-3000$ miles over 3,000 and each of those costs $0.35$ dollars, so the cost is equal to $520+0.35(m-3000)$ . A is the correct answer.

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zvonat [6]

Given:

Triangle LJK.

LJ = 89 in, LK = 28 in and m∠L = 42°

To find:

The length of missing side JK.

Solution:

LJ = k = 89

LK = j = 28

JK = l = ?

Using law of cosine:

$l^{2}=j^{2}+k^{2}-2 jk \cdot \cos L$

Substitute the given values.

$l^{2}=28^{2}+89^{2}-2 \cdot 28 \cdot 89 \cdot \cos 42^\circ$

$l^{2}=784+7921-4984 \cdot (0.7)$

$l^{2}=784+7921-4984 \cdot (0.7431)$

$l^{2}=784+7921-3703.6$

$l^{2}=5001.4$

Taking square root on both sides.

$l=70.7$

The length of the missing side is 70.7 in.

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3 years ago

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Gre4nikov [31]

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2 years ago

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wolverine [178]

Answer:

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Step-by-step explanation:

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erma4kov [3.2K]

Answer:

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