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jeka57 [31]
3 years ago
13

What is the area of the following circle?

Mathematics
1 answer:
Licemer1 [7]3 years ago
7 0
U tell me cause idk
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You throw a ball up and its height h can be tracked using the equation h=2x^2-12x+20.
postnew [5]

<em><u>This problem seems to be wrong because no minimum point was found and no point of landing exists</u></em>

Answer:

1) There is no maximum height

2) The ball will never land

Step-by-step explanation:

<u>Derivatives</u>

Sometimes we need to find the maximum or minimum value of a function in a given interval. The derivative is a very handy tool for this task. We only have to compute the first derivative f' and have it equal to 0. That will give us the critical points.

Then, compute the second derivative f'' and evaluate the critical points in there. The criteria establish that

If f''(a) is positive, then x=a is a minimum

If f''(a) is negative, then x=a is a maximum

1)

The function provided in the question is

h(x)=2x^2-12x+20

Let's find the first derivative

h'(x)=4x-12

solving h'=0:

4x-12=0

x=3

Computing h''

h''(x)=4

It means that no matter the value of x, the second derivative is always positive, so x=3 is a minimum. The function doesn't have a local maximum or the ball will never reach a maximum height

2)

To find when will the ball land, we set h=0

2x^2-12x+20=0

Simplifying by 2

x^2-6x+10=0

Completing squares

x^2-6x+9+10-9=0

Factoring and rearranging

(x-3)^2=-1

There is no real value of x to solve the above equation, so the ball will never land.

This problem seems to be wrong because no minimum point was found and no point of landing exists

3 0
3 years ago
What is the distance between (-5, 3) and (7, 3)?
Ksivusya [100]

Answer:

12

Step-by-step explanation:

7+5

7 0
2 years ago
Read 2 more answers
Seven more than 4 times a number is more than twenty-seven.
Rainbow [258]

Answer:

330

Step-by-step explanation:

this question wasn't as sepcific but my answer is 330 bc 7 more then 4 i suppose u to add? so that would be 11, so 11 times a number that is more then 27 so i picked 30, 11x30=330.

3 0
3 years ago
A train traveled 3/5 of the distance between two cities in 1/4 of an hour. At this rate, what fraction of the distance between t
Mkey [24]

Answer: 2 2/5 distance

Step-by-step explanation:

You know 1/4 of an hour you travel of 3/5 of distance, so let’s set an proportion: 1/4 hr = 3/5 of distance, multiply 4 on both sides, and you get 2 2/5 distance. Hope this helps!

4 0
3 years ago
Consider the relationship between the place values of the 3s in this number.
Lemur [1.5K]
C. the three in the hundredths place is ten times greater than the 3 in the tenths place
7 0
3 years ago
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