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nika2105 [10]
3 years ago
7

1. A cube's volume is 512 cubic units. What is the length of its edge?

Mathematics
1 answer:
Hoochie [10]3 years ago
8 0

the answer is A ;)))))

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How many variable terms are in the expression 3x3y + 5x2 + y + 9?
Ratling [72]
Three variable terms appear in this expression. Although 9xy has two variables, they combine to make one term. 

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GEOMETRY PLEASE HELP!!! What is the surface area of the square pyramid shown if the height is 15 m?
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3 years ago
Suppose a student carrying a flu virus returns to an isolated college campus of 2000 students. Determine a differential equation
ad-work [718]

Answer:

x(t) = 2000 - e^(-k*t)

Step-by-step explanation:

Interpretation:

No . infected student = x

Total student = 2000

rate of infected students = dx / dt

not-infected student = 200 - x

The general rate at which student are infected can be expressed as below:

dx / dt = k * ( 2000 - x )

To develop an expression of x(t) we integrate the above expression by separating variables:

dx / (2000 - x ) = k * dt

Now integrate:

\int\limits{\frac{1}{(2000-x)} } \, dx = k *  \int\limits{dt}\\\\- ln (2000-x) = k*t + C\\\\

@ t = 0 , infected students x = 0

Hence,

C = - ln (2000)

- ln (2000-x) = k*t + - ln (2000)\\\\ln (\frac{2000-x}{2000}) = -k*t\\\\ 2000 - x = e^(-kt)\\\\x(t) = 2000 - e ^ (-k*t)

6 0
3 years ago
Given m || n, find the value of x and<br> y.
Ann [662]

Answer:

x = 41 , y = 139

Step-by-step explanation:

x and 41° are alternate exterior angles and are congruent , so

x = 41

x and y are a linear pair and sum to 180° , that is

x + y = 180

41 + y = 180 ( subtract 41 from both sides )

y = 139

3 0
2 years ago
What is 3x5 you say? it's 15
Shtirlitz [24]
15
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3 0
3 years ago
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