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ella [17]
3 years ago
5

Three beads are placed on the vertices of an equilateral triangle of side d = 3.6 cm. The first bead of mass m1 = 130 g is place

d on the top vertex. The second bead of mass m2 = 55 g is placed on the left vertex. The third bead of mass m3 = 95 g is placed on the right vertex. show answer No Attempt 25% Part (a) Write a symbolic equation for the horizontal component of the center of mass relative to the left vertex of the triangle.
Mathematics
1 answer:
lara [203]3 years ago
4 0

Answer:

a) \bar x = \frac{d\cdot m_{3}+(d\cdot \cos 60^{\textdegree})\cdot m_{1}}{m_{1}+m_{2}+m_{3}}

Step-by-step explanation:

a) Let be origin set in the left vertex of the triangle and the horizontal axis is parallel to the side between the right and left beads. The horizontal component of the center of mass is:

\bar x = \frac{d\cdot m_{3}+(d\cdot \cos 60^{\textdegree})\cdot m_{1}}{m_{1}+m_{2}+m_{3}}

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olchik [2.2K]
2 is the base and (\sqrt[4][a^5 b^3]) is the exponent.

the 4 is called an index and it means to fi d the fourth root of the expression under the (\sqrt[][text]) symbol.\\a fourth root is a factor that was multiplied four times. ex: 2*2*2*2=16. the fourth root of 16 is two. \\when you do square roots, you take the number representing the factor out of the radical. anything else that is not a square root stays under. ex: \\([tex]\sqrt[9][text])\\([tex]\sqrt[3*3*3][text]) there is one set of two 3's so\\([tex]3\sqrt[3][text])\\with a fourth root, you look for groups of four. the symbol of that group is placed outside the radical. anything else stays in.\\ ([tex]\sqrt[4][a^5 b^3])

(\sqrt[4][a*a*a*a*a*b*b*b]) there is one group of 4 a's so

(a\sqrt[4][a* b^3])

there really isn't anything else to do to simplify the expression
5 0
3 years ago
If f(x) = -2x - 3, find f(0) - 7. <br><br><br>help please!! I will give brainliest!!!!
VikaD [51]

Hi there!

\huge\boxed{-10}

f(x) = -2x - 3

Plug in 0 for "x" to solve for f(0):

f(0) = -2(0) - 3

f(0) = -3

Since the question is asking you to evaluate f(0) - 7, simply subtract:

-3 - 7 = -10.

7 0
3 years ago
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Answer

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Question:<br> Image Below
konstantin123 [22]

Answer:

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Step-by-step explanation:

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We can check by adding all the sides for three triangles.

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