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Serggg [28]
3 years ago
12

Suppose that 3 PLS HELP NEED ANSWER

Mathematics
1 answer:
Mazyrski [523]3 years ago
7 0

Answer:with?

Step-by-step explanation:

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Sarah bought a bike that costs $260. She a coupon that was worth $55 off the cost of any bike. Use the expression $260 + (-55) t
Rudiy27

Answer:

205 dollars for the bike

Step-by-step explanation:

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She is wrong she should have added 18 to both sides
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2 years ago
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

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3 years ago
Lila hired a chainsaw for a week.
Allisa [31]

Answer:

She payed $269 for the chainsaw :)

4 0
3 years ago
Read 2 more answers
What does 1+1 equal i need help
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The answer is 2 duh but it also equals window :)
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3 years ago
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