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FrozenT [24]
3 years ago
10

Which ordered pair is a solution of the equation? y = -3.2 – 4

Mathematics
1 answer:
UkoKoshka [18]3 years ago
6 0

Answer:

-7.2

Step-by-step explanation:

y=-3.2-4 = -7.2

THATS THE ANSWER, HOPE IT HELPS YOU!

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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 ...

  T = (final temp) + (initial difference)×(decay factor)^t

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

__

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 ...

  T = 25 +75(65/75)^t

Then for t=4, the temperature is ...

  T = 25 +75(13/15)^4 ≈ 67.3 . . . . degrees

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

4 0
2 years ago
XYZ Corporation recorded the number of employee absences each week over a period of 10 weeks. The result is the data list 5, 3,
nadezda [96]

Answer:

4 ansences

Step-by-step explanation:

40 / 4 is 10 so ans is 10 absences

8 0
3 years ago
Round 249798.828806 to the nearest ten.
Artyom0805 [142]
249798.8

The nearest ten
5 0
2 years ago
Read 2 more answers
2. Interpola:
Ludmilka [50]

the answer would be would be D

4 0
3 years ago
Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2, use the given sample sizes and numb
11Alexandr11 [23.1K]
Since the data is insufficient. Let us denote that n1 = 100, n2 = 100X1 = 38. X2 = 40
So looking for the p value:
p = (38+ 40) / (100 + 100) = 0.39
z = (38/100 - 40/100)/√ (0.39*(1-0.39)*(1/100 + 1/100))= -0.2899
P-value = P (|z| > 0.2899) = 0.7718
7 0
3 years ago
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