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Ann [662]
2 years ago
12

PLEASE HELP!! WILL GIVE BRAINLIEST IF YOU ANSWER SOON!!!

Mathematics
1 answer:
babymother [125]2 years ago
5 0

Answer:

b

Step-by-step explanation:

math

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The radius of the base of a cylinder is decreasing at a rate of 9 millimeters per hour and the height of the cylinder is increas
ivann1987 [24]

Answer:

<em>Answer: d) -310pi</em>

Step-by-step explanation:

<u>Instantaneous Rate of Change</u>

Is the change in the rate of change of a function at a particular instant. It's the same as the derivative value at a specific point.

The surface area of a cylinder of radius r and height h is:

A=2\pi r^2+2\pi r h

We need to calculate the rate of change of the surface area of the cylinder at a specific moment where:

The radius is r=8 mm

The height is h=3 mm

The radius changes at r'=-9 mm/hr

The height changes at h'=+2 mm/hr

Find the derivative of A with respect to time:

A'=2\pi (r^2)'+2\pi (r h)'

A'=2\pi 2rr'+2\pi (r' h+rh')

Substituting the values:

A'=2\pi 2(8)(-9)+2\pi ((-9) (3)+(8)(2))

Calculating:

A'=-288\pi +2\pi (-27+16)

A'=-288\pi +2\pi (-11)

A'=-288\pi -22\pi

A'=-310\pi

Answer: d) -310pi

4 0
3 years ago
The nutrition information on the cereal box says that a 1/2 cup serving provides 120 calories and 9 grams of dietary fiber. At t
Alex73 [517]

Answer:

A 1/3 cup serving provides 140 calories and 6 grams of fiber.

A 1 cup serving would have 3 x 140 calories and 3 x 6 grams of fiber

That is, 420 calories and 18 grams fiber

A 1/2 cup would contain half of that, or

1/2 x 420 = 210 calories and 1/2 x 18 = 9 grams of fiber

Hope this helps! ^_^  <em>:3</em>

3 0
3 years ago
What is the volume of the figure composed of two congruent triangular prisms if a = 4 units, b = 2 units, and c = 6 units?
Bess [88]

Answer:

Step-by-step explanation:

3x with 2 power

6 0
3 years ago
The set of ordered pairs below represents the number of tickets sold for a fundraiser. The​ x-coordinates represent the day and
zhannawk [14.2K]

Answer:

Yes, it is a function

Step-by-step explanation:

Because each x-value has only one y-value

3 0
3 years ago
Read 2 more answers
Number 17 plzzzz___help_____
pav-90 [236]

Answer:

I would say the answer is

A. 2,000

Step-by-step explanation:

You need to find the the mean (Average) for years 1995 - 2000

and the mean (Average) for years 1996 - 2001

10 + 15 + 13 + 17 + 15 + 17 = 87

87/6 = 14.5

15 + 13 + 17 + 15 + 17 + 22 = 99

99/6 = 16.5

Once you have found the means, then you subtract the two to find the difference

16.5 - 14.5 = 2

And the number of Apples is in thousands so the answer would be 2,000.

3 0
3 years ago
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