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3 years ago

[-16 (-0.2)]-[(-4)×0.66]

Mathematics

1 answer:

Sergio [31]3 years ago

4 0

[-16(-0.2)] - [(-4)*0.66]

3.2 - (-2.64)

3.2+2.64 = 5.84

So, your answer is 5.84

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What is the approximate length of a pendulum that takes 2.4 pi seconds to swing back and forth?

sertanlavr [38]

Answer:

The approximate length of the pendulum is 46.08 ft

Step-by-step explanation:

The time (t) of pendulum oscillation is given as;

$t = 2 \pi\sqrt{\frac{L}{g} }$

where;

L is the length of the pendulum

g is acceleration due to gravity = 9.8 m/s² = 32.15 ft/s²

t is the time given as 2.4 π seconds

From the equation above, make L the subject of the formula;

$t = 2 \pi\sqrt{\frac{L}{g} } \\\\\frac{t}{2\pi} = \sqrt{\frac{L}{g} }\\\\(\frac{t}{2\pi} )^2 =\frac{L}{g} \\\\L = g*(\frac{t}{2\pi} )^2\\\\L = 32.15*(\frac{2.4 \pi}{2\pi} )^2\\\\L = 32.15 *1.44\\\\L = 46.296 \ ft$

Therefore, the approximate length of the pendulum is 46.29 ft

The closest option is 46.08 ft

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3 years ago

The number of kilometers traveled by a bus is represented by x. If a train traveled 200 kilometers farther than the bus, represe

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Answer:

The train travelled x + 200 km

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What is the value for f(x)4^2x -100 when x=2 ?<br><br> (the ^2x is a exponent)

PolarNik [594]

Answer:

156

Step-by-step explanation:

f(x)= 4^(2x) -100

Let x =2

f(2)= 4^(2*2) -100

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2 years ago