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kakasveta [241]
3 years ago
9

H(t)=(t+3)^2+5 Over which interval does h have a negative average rate of change?

Mathematics
2 answers:
VikaD [51]3 years ago
6 0

Answer: -4<t<-3

Step-by-step explanation:

Yuri [45]3 years ago
4 0

Answer:

( -∞, -3 ) or any subinterval of  ( -∞, -3 )

Step-by-step explanation:

h(t)=(t+3)^2+5 has the form

h(t) =(t-h)^2 + 5, indicating that h(t)=(t+3)^2+5 represents a parabola with vertex at (-3,5) that opens up.  This (-3,5) is the minimum point of the graph.

To the left of t = -3, h(t) is decreasing; to the right of t = -3, h(t) is increasing.

Thus, it is on any interval to the left of t = -3 that the rate of change of this function is negative (the function is decreasing  on ( -∞, -3 ).

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Explain how to write and evaluate an algebraic expression. one more than the product of a number and seven, decreased by five; e
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1) When it says more than, then you have to switch it so it will be 7n + 1 instead of 1+7n.
2) Because you then have to subtract by 5 you have to put the 7n + 1 in parentheses so it reads (7n + 1) - 5
3) And then to evaluate you just have to substitute n for 6
4) 7 * 6 = 42; 42+1 = 43; 43-5 = 38
5) The answer to this expression would be 38

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3 years ago
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Answer:

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Step-by-step explanation:


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3 years ago
B
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Answer:

13

Step-by-step explanation:

We know that a^2+b^2 = c^2  where a and b are the legs and c is the hypotenuse

5^2 + 12^2 = c^2

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3 0
3 years ago
Mr. Mole left his burrow that lies below the ground and started digging his way at a constant rate deeper into the ground.
Marizza181 [45]

Answer:

A(t)=-1.8t-4.5

Step-by-step explanation:

Mr.Mole's digging can be described by a linear model of general equation:

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Where "m" is the rate at which he descends. Note that since the function A(t) measure his altitude relative to the ground, the rate "m" must be negative.

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A(t)=-1.8*t+c

The constant "c" is his starting position. To find this value, assign the given data at t = 5 min to the equation above

-13.5=-1.8*5+c\\c=-4.5m

Therefore, the function A(t) is described by the following formula:
A(t)=-1.8t-4.5

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