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3 years ago

This is a calculus question.

Mathematics

2 answers:

yuradex [85]3 years ago

7 0

Answer:

= 2 cm^2/sec

Step-by-step explanation:

side of cube ---- x cm

volume = x^3

d(volume)/dt = 3x^2 dx/dt

when c = 20, d(volume)/dt = 10 cm^3/sec

10 = 3(20^2) dx/dt

dx/dt = 10/1200 = 1/120 cm/sec

Surface area = SA = 6x^2

d(SA)/dt = 12x dx/dt

so when x = 20, as above

d(SA)/dt = 12(20)(1/120) cm^2/sec

= 2 cm^2/sec

DiKsa [7]3 years ago

3 0

Answer:

2 cm^2/sec

Step-by-step explanation:

side of cube ---- x cm

volume = x^3

d(volume)/dt = 3x^2 dx/dt

when c = 20, d(volume)/dt = 10 cm^3/sec

10 = 3(20^2) dx/dt

dx/dt = 10/1200 = 1/120 cm/sec

Surface area = SA = 6x^2

d(SA)/dt = 12x dx/dt

so when x = 20, as above

d(SA)/dt = 12(20)(1/120) cm^2/sec

= 2 cm^2/sec

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Answer:

C. Function F was translated 5 units up to create function M

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3 years ago

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What rule describes the translation that was applied to triangle JKM to create triangle J’K’M’, Initial directions with the pic

-BARSIC- [3]

Given a point (x, y), let's evaluate the transformations:

- Translation 6 units to the right.

Means moving the point 6 units in the horizontal direction; to the right.

The new point will be (x + 6, y).

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Means moving the point 2 units down; in the vertical direction.

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1 year ago

the vertex of this parabola is at 4, -3, x-value is 5 and y-value at -6 what is the coefficient of the squared expression

posledela

Hello:
an equation is : f(x) = a(x-4)² - 3
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3 years ago

Rectangle HYGT has a perimeter of 170 inches. If the length is 10x - 7

frozen [14]

Answer:

The wide of the rectangle = 42 inches

The length of the rectangle = 43 inches

Step-by-step explanation:

Step(i):-

Given that the length of the rectangle = 10x-7

Given that the width of the rectangle = 6x +12

The perimeter of the rectangle = 2(length + width)

Given that the perimeter of the rectangle = 170

Step(ii):-

2(length + width) = 170

length + width = 85

10x-7 +6x +12 =85

16x +5 = 85

16x = 85-5 = 80

x = $\frac{80}{16}$

x = 5

Final answer:-

The length of the rectangle = 10(5)-7 = 50-7 = 43

The wide of the rectangle = 6x +12 = 6(5) + 12 = 30+12 =42

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2 years ago

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Alecsey [184]

here you go someone already has answered this question before <3

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2 years ago