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Sergeu [11.5K]
3 years ago
8

Please Help!

Mathematics
1 answer:
Bezzdna [24]3 years ago
6 0
As x goed up one y goes down one so rate of change is -1
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What are five costs related to business?
ANTONII [103]

Answer:

Advertising and promotion.

Borrowing costs.

Employee expenses.

Equipment and supplies.

Insurance, license, and permit fees.

Research expenses.

Technological expenses.

Step-by-step explanation:

7 0
3 years ago
Please help me. this might be easy for some and after 2 answers I will give brainliest
Evgen [1.6K]

Answer:

7 yards and 2 feet is 86 feet long.

Step-by-step explanation:

7·12=84

84+2=86

4 0
2 years ago
Newton's Law of Cooling states that the rate of change of the temperature of an object, T, is proportional to the difference of
maria [59]

Answer:

  305 °F

Step-by-step explanation:

The core temperature of the object after 4 hours can be found using an exponential decay formula to model the decay of the difference between core temperature and ambient.

<h3>Cooling Model</h3>

The solution to the differential equation described by Newton's law of cooling is the exponential equation ...

  y = ab^t +c

where 'a' is the initial core temperature difference from ambient, 'b' is the decay factor of that difference in 1 unit of time period t. 'c' is the ambient temperature.

For this problem, the ambient temperature is c=80, and the differences of interest are ...

  a = 1200 -80 = 1120

  b = (830 -80)/1120 = 75/112

Using these values in the model gives ...

  y = 1120(75/112)^t +80 . . . . . . where y(t) is the core temperature at time t

Note that units of time are hours.

<h3>Application</h3>

We want y when t=4.

  y = 1120(75/112)^4 +80 ≈ 1120(0.20108) +80 ≈ 305.212

The core temperature after 4 hours is about 305 °F.

__

<em>Additional comment</em>

The differential equation will have a solution of the form ...

  T-T_R=(T_0-T_R)e^{kt}

where k = ln(75/112) ≈ -0.40101

In the above, we defined b = e^k = 75/112. Accuracy with this fraction can be better than using a truncated value of k.

5 0
2 years ago
Cities A &amp; B are 5 inches apart on a map. Cities C&amp;D are 4 inches apart. If C &amp; D are 900 miles apart, how many mile
katen-ka-za [31]
Cities A and B are 1,125 miles apart
5 0
3 years ago
8,128 in expanded form
Brilliant_brown [7]

Answer:

8000,100,20,8

Step-by-step explanation:

explantion

3 0
2 years ago
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