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madreJ [45]
2 years ago
5

Un objeto tiene una masa de 120 kg y un volumen de 5 m3. Calcula su densidad y determinada peso específico

Mathematics
1 answer:
AleksandrR [38]2 years ago
3 0

Answer:

sorry I don't speak your language

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Eight is 1/5 of what number
Morgarella [4.7K]

Answer:

40

Step-by-step explanation:

8 = x/5

x = 8*5

x = 40

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3 years ago
For what values of x∈[0,2π] does the graph of y=x+2cosx have a horizontal tangent?
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Answer: x = pi/6 and x = pi/3.

Step-by-step explanation:

We have the function:

y = x + 2*cos(x)

It will have a horizontal tangent at the point where it's derivate is equal to zero.

Then first let's differentiate y.

y' = dy/dx = 1 - 2*sin(x).

Then we must find the value of x between 0 and 2*pi (or 0° and 360°)

y'(x) = 1 - 2*sin(x) = 0.

Let's solve that:

2*sin(x) = 1

sin(x) = 1/2.

We know that:

sin(30°) = 1/2.

and

Sin(120°) = 1/2

Then let's convert 30° into radians.

We know that:

pi = 180°.

Then:

pi/180° = 1.

30° = 30°*(pi/180°) = (30°/180°)*pi = (3/18)*pi = pi/6

120° = (120°/180°)*pi = (12/18)*pi = (1/3)*pi = pi/3.

Then the two values of x are: pi/6 and pi/3.

3 0
2 years ago
What is the value of y?<br> A. 83<br> B. 89<br> C. 96<br> D. 97
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Answer:

<u>A. 83</u> is the correct option.

Step-by-step explanation:

all angles of a triangle are always equal to 180.

46 + 51 + y = 180

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180 - 97 = <u>83</u>

Have a nice day! :-)

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Answer:

It's A.

Step-by-step explanation:

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2 years ago
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