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julsineya [31]
3 years ago
15

I know the answer to 255.5 ➗ 7 but how would you write it out.. (I'm not smart)

Mathematics
1 answer:
Ainat [17]3 years ago
3 0
There are several ways such as
255\frac{1}{2} / 7

First put it in the decimal equation
Since there is a decimal in the number being divided(255.5), you move the decimal so that it is a whole number(2555) but since you move the decimal place once, you do the same to the 7 so that it is now 70. So now it's 2555/70 which looks like 365 but then, you have to place the decimal value so that it is now 36.5
This is what you use to divide as shown.

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Group Work 2.6 Newton's Law of Cooling states that an object cools at a rate proportional to the difference between the temperat
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Answer:

ΔT = ΔT0 e^-K T

As I understand Newton's Law of Cooling

ΔT at any time is the difference between the temperature and the surroundings

Originally       ΔT0 = 95 - 22   difference between 95 and room temperature

65 - 22 = 33 = 73 e^-KT      where t is time to cool to 65 deg

ln (33/73) = -KT       K = .794 / 5 = .159    where 5 is time to cool to 65 deg

40 - 22 = 73 e^-.159 T      where t is time to cool to 40 deg

18 = 73 e^-.159 T

ln (18 / 73) = -.159 T

T = 8.8 min

It would take 8.8 min for the object to cool to 40 deg C

Suppose the object cooled from 95 to 90 deg, then

ln 68 / 73 = -.159 T     and T = .45 min

7 0
2 years ago
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Store pays $50 for a pair of shoes. The markup is 25%.
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I am stuck on how to do 10 percent of $55.86
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Answer:

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8 0
3 years ago
A car traveld 32 miles in 4 hours at this rate how many miles will the car travel in 0.5 hours
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Answer:

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Step-by-step explanation:

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So the car can travel 4 miles in 0.5 hours.

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