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maxonik [38]
3 years ago
5

At midnight, the temperature in a city was 5 degrees Celsius. The temperature was dropping at a steady rate of 2 degrees Celsius

per hour. Write an inequality that represents h, the number of hours past midnight, when the temperature was colder than -7 degrees Celsius. *
Mathematics
1 answer:
fredd [130]3 years ago
3 0

Answer:

     5- 2h = -7 ?

Step-by-step explanation:Im not really sure if im right :(

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The position s(t) of a robot moving along a track at time t is given by s(t)=9t^2−90t+4.
Xelga [282]

The total distance traveled by the robot from t=0 to t=9 is 1422 units

Integration is a way in which smaller components are brought together in pieces to form a whole. Integration can be used in finding areas, volumes and so on.

Given that the position s(t) at any time t is given by the function:

s(t)=9t²−90t+4

The total distance traveled by the robot from t=0 to t=9 can be gotten by integrating the position function within the limits 0< t < 9

Therefore:

Total\ distance = \int\limits^9_0 {s(t) \, dt \\\\Total\ distance = \int\limits^9_0 {(9t^2-90t+4) \, dt\\\\Total\ distance = [3t^3-45t+4t]_0^9\\\\Total\ distance=-1422\ units

The total distance is 1422 units

Find out more at: brainly.com/question/22008756

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2 years ago
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Varvara68 [4.7K]

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Step-by-step explanation:

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vichka [17]

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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