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castortr0y [4]
3 years ago
11

Help i’m taking the test Find the value of x.

Mathematics
1 answer:
agasfer [191]3 years ago
3 0
X = 7


The angles are congruent so you’d do, 4x-5=23 and you’d get x = 7
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Which is an example of a statistical question?
ElenaW [278]

Answer:

3??

Step-by-step explanation:

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3 years ago
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A thermometer is taken from an inside room to the outside, where the air temperature is 20° f. after 1 minute the thermometer re
fomenos

The change in the temperature is proportional to the difference in temperatures. Let's call the initial temperature of the room and the thermometer E_0 and the current temperature E(t) where t is the elapsed time in minutes.  The outside temperature is 20 F.

Newton's Law of Cooling:

E(t) - 20 = (E_0 - 20) e^{- k t}

We're given E(1)=70 \textrm{ and } E(5)=45

70-20 = (E_0 - 20) e^{-k}

45-20 =(E_0 - 20) e^{-5k}

Dividing,

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E(t) - 20 = (E_0 - 20) e^{- k t}

E_0 = 20 + (E(t) - 20)e^{k t}

E_0 = 20 + (E(1) - 20)e^{k}

E_0 = 20 + (70 - 20)e^{\ln 2/4}

E_0 = 20 + 50 \cdot 2^{1/4} \approx 79.46 \textrm{ degrees F}


3 0
4 years ago
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Leya [2.2K]
A = bh


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6 0
3 years ago
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Radda [10]

Answer:

Step-by-step explanation:

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Answer:

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