1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alchen [17]
3 years ago
9

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

You might be interested in
If 54 oranges cost N36. Find the costs of 3 oranges
Rus_ich [418]

Answer:

4.5

Step-by-step explanation:

because if you divide 54 and 36 you get 1.5 and 1.5 x 3 is 4.5

3 0
2 years ago
Its 9:14Pm what time will it be in 19 hours?
Advocard [28]
The answer is 4:14am
5 0
3 years ago
Read 2 more answers
A car rents for $45 per day plus .22cent toy are on a daily budget of 77 what mialage
elena55 [62]
If its $45 per day plus $0.22 cents, and you only have $77. You can only have the car for 1.7 days which adds up too $76.94.
4 0
3 years ago
Kwame says that the ordered pair(5,0) is on the y-axis. So you agree? Justify your answer.
RideAnS [48]

Answer:

No, the answer would be on the x-axis. This is because x=5 and y=0, which would mean that the ordered pair (5,0) would be on the x-axis.

Hope this helps!

3 0
3 years ago
Read 2 more answers
Complete factorization of x^3 - 4x^2 + x - 4
Pachacha [2.7K]

Step-by-step explanation:

x³ - 4x² + x - 4

= x²(x - 4) + (x - 4)

= (x² + 1)(x - 4).

Since the quadratic factor (x² + 1) is irreducible any further, this is our answer.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Determine if the functions are even, odd or neither. f(x) = -5x4 - 2 and g(x) = x3 + 2x
    12·1 answer
  • Which equation represents a proportional relationship?
    8·1 answer
  • the average mass of the eggs laid by chickens on ms. watsons farm is 3.5 grams. about how many grams does a dozen eggs weigh
    12·2 answers
  • if you were to solve the following system by substitution, what would be the best variable to solve for and from what equation?
    7·1 answer
  • Mason has a collection of .49 stamps, .20 stamps and .3 stamps worth 23.55. He has 56 total .49 and .20 stamps and the number of
    9·1 answer
  • Simplify 7y exponent 2- y exponent 2=
    5·2 answers
  • Find the area. The figure is not drawn to scale.
    11·2 answers
  • The table shows the sales price and the discount offered at different stores for a bicycle that Juan wants to pure
    10·1 answer
  • Henry spent 1 hour 30 minutes less than Joey reading last week. Joey spent 50 minutes less than Pete. Pete spent 3 hours reading
    10·2 answers
  • Find the average of -4, -8, -12, 0, and -6.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!