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Archy [21]
3 years ago
7

Leyla drops a penny from a height of 150 m.

Mathematics
2 answers:
gizmo_the_mogwai [7]3 years ago
8 0
When the penny hits the ground, h will = 0.

So:  Set h(t) = 0 = -4.9t^2 + 0t + 150 m

Then 4.9t^2 = 150, and so t^2 = sqrt(150 / 4.9)   =    plus or minus 5.53 sec.

We can use only the positive root, as we're measuring time.

t = 5.5 sec (answer)
Sav [38]3 years ago
5 0

Wrong question...

Answer:

The answer is 3.8

Step-by-step explanation:

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BigorU [14]
Are you serious? oh well..

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4 0
3 years ago
Help me thanks bsbsbs
-Dominant- [34]

Answer:

4.56, 4,65, 5,46, 5.64, 6.45 and 6.54

Step-by-step explanation:

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4 0
3 years ago
What is the answer to this and how do I do it???
fiasKO [112]

Answer

C

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7 0
3 years ago
Simplify (3x)-1. A. 81x^4. B. 4x^6. C. 1/3x. D. 1/x^6
elena55 [62]
If you mean: (3x)^-1

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hope this helps
3 0
3 years ago
If there were 49 cars in a line that stretched 528 feet, what is the average car length? assume that the cars are lined up bumpe
lakkis [162]

If there were 49 cars in a line that stretched 528 feet, what is the average car length? assume that the cars are lined up bumper-to-bumper

Answer: We are given there are 49 cars

Also these 49 cars are in a line stretched 528 feet.

Now the average length of the car is:

Average length = \frac{(length-covered-by-49-cars)}{Number-of-cars}

                          =\frac{528}{49}=10.78

Therefore, the average length of car is 10.78 feet

                 

6 0
3 years ago
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