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3 years ago

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A bowl of flower seeds contains 7 petunia seeds and 28 begonia seeds. Riley calculated the probability that a randomly selected

seed is a petunia seed as 1 4 . Describe and correct Riley's error

1 answer:

timama [110]3 years ago

5 0

7 petunia and 28 begonia....total of 35 seeds

the probability of picking a petunia is : 7/35 which reduces to 1/5

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Answer:

$f = \frac{299790000 \frac{m}{s}}{3.03 m}= 9890594.06 Hz$

And if we convert to megahertz we got:

$9890594.06 Hz *\frac{1MHz}{10^6 Hz}= 98.9 MHz$

Step-by-step explanation:

For any mechanical wave we have the following general relationship:

$v = \lambda f$

where:

v represent the speed of the wave = 299790000 m/s

$\lambda = 3.03m$ represent the wavelength for the radio station

f represent the frequency of interest

If we solve for the frequency we got:

$f = \frac{v}{\lambda}$

And replacing the values we got:

$f = \frac{299790000 \frac{m}{s}}{3.03 m}= 9890594.06 Hz$

And if we convert to megahertz we got:

$9890594.06 Hz *\frac{1MHz}{10^6 Hz}= 98.9 MHz$

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2 years ago

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Step-by-step explanation:

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Step-by-step explanation:

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