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stepan [7]
3 years ago
14

Determine the slope and the y-intercept of this question Y=-1/2x+3

Mathematics
2 answers:
Ainat [17]3 years ago
8 0

slope=

-1/2

y-intercept=

3

juin [17]3 years ago
5 0

Answer:

1/2

Step-by-step explanation:

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The temperature of a cup of coffee varies according to Newton's Law of Cooling: dT dt equals negative k times the quantity T min
denis23 [38]

Answer:

  (b)  67

Step-by-step explanation:

A solution to the differential equation describing the temperature according to Newton's Law of Cooling could be written as ...

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where the decay factor is the fraction of change during 1 unit of time period t.

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Here, the initial difference of 100-25 = 75 degrees decays to 90-25 = 65 degrees in 1 minute. So, the units of t are minutes, the decay factor is 65/75, the initial difference is 75 degrees, and the final temperature is 25 degrees. That lets us write the equation as ...

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After 4 minutes the temperature of the coffee is about 67 degrees.

4 0
1 year ago
It took John 12 hours riding his bike to make the round trip to his uncle's. If he averaged 20 mph out and 30 mph back, how long
notsponge [240]

Answer:

Step-by-step explanation:

Let the time taken by the john to get to his uncle be x.

Let the time taken by the john to get back from his uncle be y.

So,

x+y=12 ------ equation 1

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x=3/2y

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x=3/2*4.8

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x=7.2h ....

6 0
2 years ago
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