3 years ago

Lcm of 14, 21 and 28

Mathematics

1 answer:

Zepler [3.9K]3 years ago

5 0

7 is the lcm of all.

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Lapatulllka [165]

Answer:

20 5/24

Step-by-step explanation:

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3 years ago

Two trains station at the same time one travels east at 8 miles per hour .The other train traveles east at 8 millas per hour the

Arturiano [62]

What is your question ? This isn’t clear

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3 years ago

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Zinaida [17]

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15800

Step-by-step explanation:

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3 years ago

Plot and connect the points A (2,-2), B(-4,-4), C (-4,-1), D (-2,3), E (1,3), F (2,5), and find the length of BC.

elixir [45]

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Step-by-step explanation B is 3 units away from C

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3 years ago

The velocity of a particle moving back and forth on a line is vequalsStartFraction ds Over dt EndFraction equals6 sine (2 t )Sta

max2010maxim [7]

Answer:

s = 6 m

Step-by-step explanation:

The value of the velocity v is given as:

$v = \frac{ds}{dt} = 6 sin(2t)$ m/s

To find s, we have to integrate and apply the initial values of s = o when t = 0:

$\frac{ds}{dt} = 6 sin(2t)\\\\\int\limits^s_0 {ds} = \int\limits^t_0 {6sin(2t)} \, dt\\\\s|^s_o = -3cos(2t)|^t_o\\\\s - 0 = -3cos(2t) -(-3cos(0))\\\\s = -3cos(2t) + 3(1)\\\\s = -3cos(2t) + 3$

When t = π/2, s will be:

s = -3cos(2 * π/2) + 3

s = -3cos(π) + 3

s = -3(-1) + 3

s = 3 + 3

s = 6 m

4 0

4 years ago