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3 years ago

Does this figure have rotational symmetry?

Mathematics

2 answers:

natima [27]3 years ago

6 0

Answer:

Step-by-step explanation:

because a shape is rotational symmetrical when it looks the same after <em>any rotation</em> by partial turn.

My name is Ann [436]3 years ago

3 0

Answer:

Yes, the figure can be rotated 180 degrees

Step-by-step explanation:

I just did it

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pantera1 [17]

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3 years ago

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Shawn’s pay is $123 for 20 hours of work. Find hourly wage and then calculate the amount of pay for 31 hours.

morpeh [17]

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3 years ago

The sum of two numbers is 14. When one number is added to twice the other number, the result is 25. Find the numbers

ELEN [110]

Let x and y be the two numbers. We have:

$\begin{cases}x+y=14\\x+2y=25\end{cases}$

Subtract the first equation from the second to get

$y=11$

And deduce

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3 years ago

7x + 3y = m

attashe74 [19]

7x + 3y = m

3y = m - 7x

y = (m - 7x) / 3

4( r + 3 ) = t

r + 3 = t / 4

r = ( t - 3 )/ 4

2x + b = w

2x = w- b

x = ( w - b ) / 2

x (1 + y) = 2

x = 2 / 1 +y

4 0

3 years ago

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Se arrastra un bloque de 18 kg a través de una superficie con una fuerza de 300 N en donde el coeficiente de fricción de dicha s

ozzi

Answer:

$10.9\ \text{m/s}^2$

Step-by-step explanation:

m = Masa del bloque = 18 kg

F = Fuerza en el bloque = 300 N

$\mu$ = Coeficiente de fricción = 0.6

El equilibrio de fuerzas del sistema viene dado por

$F-f=ma\\\Rightarrow 300-0.6\times 18\times 9.81=18a\\\Rightarrow a=\dfrac{300-0.6\times 18\times 9.81}{18}\\\Rightarrow a=10.9\ \text{m/s}^2$

La aceleración del bloque es $10.9\ \text{m/s}^2$ .

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3 years ago