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Vesna [10]
3 years ago
10

The variable t represents the temperature at 6 p.m. Which equation would best model the word problem below? The temperature at t

he summit of Mt. Washington dropped 19°F between 6 p.m. and 10 p.m. The temperature at 10 p.m. was –12°F. What was the temperature at 6 p.m.?
Mathematics
1 answer:
Contact [7]3 years ago
3 0
t - 19 = -12 

<span>answer is </span>C
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Suppose an isosceles triangle abc has a=pi/4 and b=c=4. What is the length of a^2?
Zanzabum

The law of cosines states that, if \alpha is the angle between sides b and c,

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So, plugging our values, we have

a^2 = 16+16-2\cdot 4\cdot 4\cdot\cos\left(\dfrac{\pi}{4}\right)

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Let x=number of cds and y=number of dvds
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X + y = 40.....multiply by -4
4x + 6y = 180
-------------------
-4x - 4y = -160 (result of multiplying by -4)
4x + 6y = 180
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2y = 20
y = 20/2
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marta [7]
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3 years ago
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Answer:

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