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g100num [7]
3 years ago
5

The radar system beeps once every second. How many times will it beep in 3 days?

Mathematics
2 answers:
dexar [7]3 years ago
8 0

Answer:

259200

Step-by-step explanation:

60x24x3x60=

Colt1911 [192]3 years ago
7 0

Answer:

259200

Step-by-step explanation:

so there are 86400 in one day. multiply by 3.

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Answer:

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Step-by-step explanation:

The direction is given by the difference between the starting point and the end point, thus it is (-4,0,6)-(-2,-1,3) = (-2,1,3). The norm of this vector is        √( (-2)²+1²+3²) = √14 = 3.7416 secons

Since the speed is 7 cm/sec, we need to multiply this vector by 7/√14 = √3.5 in order to obtain how much does the particle advance each second.

As a consecuence, it advances (-2,1,3) * √3.5 = (- √14, √3.5, 3 √3.5)

And, as a result, the position after t seconds is given by the function

r(t) = (-2,1,3) + t (-√14, √3.5, 3 √3.5) = (-2 -t √14, 1 + √3.5, 3 + 3√3.5)

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Answer:

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