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7nadin3 [17]
3 years ago
7

Someone please help :)

Mathematics
1 answer:
larisa86 [58]3 years ago
8 0
The answer is 6m djsjdjjsskskksksksksksksmsmsm
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I feed to find the circumference
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answer:

131.88 inches

step-by-step explanation:

  • know the formula: 2πr
  • now plug in what we have

2πr = circumference

2(21)(3.14)

= 131.88

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Ex. 11 An apple computer has a retail price of $1000. Jim's House of Electronics is having a "20%-off sale",
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While driving from his home to his workplace, Chris has to pass through two traffic lights. The general probability of getting a
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3 years ago
A liquid at temperature 7575F is placed in an oven at temperature 450450. The temperature of the liquid increases at a rate 77 t
hichkok12 [17]

Answer: \dfrac{dT(t)}{dt}=77\times (450-T)

Step-by-step explanation:

Given

The temperature of the liquid is 75^{\circ}F placed in an oven with temperature of 450^{\circ}F.

Initially difference in temperature of the two

\Delta T=450-75\\\Rightarrow \Delta T=375^{\circ}F

According to the question

\Rightarrow \dfrac{dT(t)}{dt}=77\cdot \Delta T\\\\\Rightarrow \dfrac{dT(t)}{dt}=77\times (450-T)\quad [\text{T=75}^{\circ}F\ \text{at t=0}]

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2 years ago
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