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guajiro [1.7K]
3 years ago
13

Which explanation provides the best real-world scenario of the graph?

Mathematics
2 answers:
Naddika [18.5K]3 years ago
5 0
The last one is the only one that makes sense according to the standard position function.  -16t^2 is the pull of gravity on an object in free fall, and the height is 120 feet above the ground.  Hopefully that's what you need since there's no graph we can refer to
erastova [34]3 years ago
3 0
<h2>Answer:</h2>

The explanation that best provides the real-world scenario is:

If an object is dropped from a height of 120 feet, the function                    

                          h(t)=-16t^2+120

gives the height of the object after t seconds.

<h3>Step-by-step explanation:</h3>

a)

If an object is dropped from a height of 120 feet, the function h(t)=-16t^2-120 gives the height of the object after t seconds.

This option is incorrect.

Since when t=0 we have:

           h(t)= -120

This is not possible as the object is above the ground and hence must have positive height initially.

b)

If an object is dropped from a height of -16 feet, the function h(t)=-16t^2+120 gives the height of the object after t seconds.

This option is incorrect.

Since a object when is dropped from some height then it must be a positive height.

Also, when t=0 we have: h(t)= 120 feet.

This means that the object is dropped from a height of 120 feet.

c)

If an object is dropped from a height of 120 feet, the function h(t)=-16t^2+120 gives the height of the object after t seconds.

In this when t=0 we have:

h(t)=120 that means the height of the object initially was 120 feet and then it decreases with the increase in time as the object will reach the ground with the time increase and hence height will decrease.

               Hence, this option is correct.

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Aleksandr [31]

Answer:

-1440

Step-by-step explanation:

24x -60 = -1440

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2 years ago
Identify the type of function that models the situation below: The cost of mailing a letter is $0.37 for the first ounce and $0.
Gwar [14]

Answer:

The correct option is;

Step function

Step-by-step explanation:

The given information are;

The cost of mailing a letter for the first ounce= $0.37

The cost for each additional ounce = $0.23

Therefore, the cost of mailing a letter can be found from the relation;

y = (N-1) × $0.23 + $0.37

The step function can be represented as follows;

f(x) = a[b(x - h)] + k

Where;

(h. k) = The starting points

a = The vertical step separation

b = The horizontal step separation

Therefore, in the question, we have;

a = $0.23

b  = 1

h = 1

k = $0.37

Which gives;

f(x) = $0.23 × [1(x - 1)] + $0.37 = $0.23 × (x - 1) + $0.37

f(x) = $0.23 × (x - 1) + $0.37 which is similar to y = (N-1) × $0.23 + $0.37

Therefore the function that models the situation is step function.

8 0
3 years ago
Gradien garis -3x -2y = 7 adalah
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Yo my bro the answer is 7621
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How many pounds of Brazilian coffee costing $ 6 per pound must be mixed with 27 lbs of Columbian coffee costing $ 4 per pound to
grigory [225]

Answer:

11 2/3 pounds.

Step-by-step explanation:

Let x pounds be the amount in pounds of Brazilian coffee.

x + 27  is the amount of coffee in lbs after the mixing.

So ,working in  values of dollars, we have:

6x + 4*27 = 4.5(x + 27)

6x + 104 = 4.5x + 121.5

1.5x = 121.5 - 104 = 17.5

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8 0
3 years ago
Renaldo increased the image size on the computer screen by 20%. By
BartSMP [9]

Answer:

44%

Step-by-step explanation:

100 + 20 = 120/100

(1.2)^2=1.44

144 - 100 = 44%

3 0
2 years ago
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