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3 years ago

10

Please help!!!!!!!!!!!!!!!!

1 answer:

aksik [14]3 years ago

6 0

Step-by-step explanation:

< PQS is exterior angle of the triangle

So,

2X = X + 58

X=58

m < P = 58

m <P QR = 180 - ( 58 + 58 ) =, 64

m < P QS = 116

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Step-by-step explanation:

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3 years ago

Water whose temperature is at 100∘C is left to cool in a room where the temperature is 60∘C. After 3 minutes, the water temperat

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Answer:

21.68 minutes ≈ 21.7 minutes

Step-by-step explanation:

Given:

$T=60+40e^{kt}$

Initial temperature

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Now,

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taking the natural log both sides, we get

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or

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or

k = -0.09589

Therefore,

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or

$5=40e^{( -0.09589)t}$

or

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or

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taking the natural log both the sides, we get

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or

( -0.09589)t = -2.0794

or

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