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Maurinko [17]
3 years ago
15

Given a = {a, b, c} and b = {c, a}, which of the following is true? a ⊂ b b ⊂ a

Mathematics
1 answer:
netineya [11]3 years ago
4 0
A=\{a;\ b;\ c\};\ B=\{a;\ c\}\\\\therefore\\\\A\supset B\to B\subset A
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3 years ago
When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room its temperature has incr
Andrews [41]

Answer:

  (a)  13.85 °C

Step-by-step explanation:

The temperature difference is a decaying exponential function of time. Here, it decreases from an initial difference of 15 °C to 10 °C after 25 minutes. So, that temperature difference can be modeled as ...

  ΔT = 15(10/15)^(t/25)

We want to find the value of this at t=55. It is ...

  ΔT = 15(2/3)^(55/25) ≈ 6.15

This is the amount the temperature of the drink is below room temperature.

  drink temperature = (20 - 6.15) °C = 13.85 °C

The temperature of the drink after 55 minutes is about 13.85 °C.

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3 years ago
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Nadya [2.5K]
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5 0
4 years ago
1% of what number is 7,
diamong [38]
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5 0
3 years ago
What is the 3 in 350 compared to the 3 in 403
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The 3 in 350 is in the hundreds place. the 3 in 403 is in the ones place
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Read 2 more answers
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