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tangare [24]
3 years ago
14

The area of a square is decreasing at a rate of 43 square inches per second. At the time when the side length of the square is 7

, what is the rate of change of the perimeter of the square? Round your answer to three decimal places (if necessary).
Mathematics
1 answer:
Sergio039 [100]3 years ago
8 0

Answer:

26.230 Inches per second.

Step-by-step explanation:

Since, Area of square is decreasing at the rate of 43 square inches per second And area is directly proportional to square of the side , So

Its side will be decreasing at the rate of \sqrt{43} inches per second .

Now,

Perimeter of square is directly proportional to 4 times of the side of the square.

so Perimeter of square will be decreasing at the rate of 4× \sqrt{43}

After rounding off to three decimal places we will get 26.230 Inches per second.

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Y = 5x^2 - 10<br> what is the rate of change ?<br> is the function linear or non linear ? why ?
Svetlanka [38]

Answer:

Step-by-step explanation:

Are you in Calculus?  These are calculus concepts!

To calculate the rate of change here you must specify an interval, e. g., "what is the rate of change on the interval (0, 3)?"

If you know calculus:  The 'rate of change' on the interval (a, b) is

                f(b) - f(a)

r. of c. = --------------------

                    b - a

Have you used this formula before?

Because of the 'x^2' term this is NOT a linear function.

If you want more explanation, provide an interval on which you want the average rate of change and ask specific questions of your own.

6 0
3 years ago
A 9 inch candle burns -2/3 inch per hour. How long will it take the candle to burn completely?
Luda [366]
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5 0
3 years ago
Read 2 more answers
F (x) = -3x + 2x – 5 Whatisf (-1)?​
eduard

Answer:

f(-1) = -4

Step-by-step explanation:

f(-1) simply means that what is f(x) when x = -1?

Just plug in -1 for <em>x</em> to find your answer:

f(-1) = -3(-1) + 2(-1) - 5

f(-1) = 3 - 2 - 5

f(-1) = 1 - 5

f(-1) = -4

7 0
3 years ago
An average American child aged 0-2 years old has about 915 minutes of screen time in 5 days. 6 times the difference between a ch
Alborosie

Answer:

For children ages 2 to 5, limit screen time to one hour a day of high-quality programming. As your child grows, a one-size-fits-all approach doesn't work as well. You'll need to decide how much media to let your child use each day and what's appropriate.

Step-by-step explanation:

For kids aged 2 to 5, screen time should be limited to 1 hour per day, and parents should watch the programs with their child. Also, parents should have times when screens are turned off, and bedrooms should be media-free.

7 0
3 years ago
Let f(x) = 5x2 – 4x and g(x) = 5x + 1.
Nastasia [14]

f(x) = 5x^2 - 4x

g(x) = 5x + 1

Therefore f - g = 5x^2 - 4x - (5x + 1)

= 5x^2 - 4x - 5x -1

= 5x^2 -9x - 1


Hope it helps :)











8 0
3 years ago
Read 2 more answers
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