B 1,250 m
C 100 m
D 50 m
Answer:
50 m
Step-by-step explanation:
The frequency of a radio wave varies inversely as its wavelength. This means that:
f α 1 / λ
=> f = c / λ
c is the constant of proportionality
Note: c is called the speed of the radio wave
A 250-meter wave has a frequency of 1,200 kHz.
This implies that:
1200 * 1000 = c / 250
=> c = 250 * 1200 * 1000
c = 300000000 m/s
Therefore, to calculate the wavelength of a wave that has a frequency of 6,000 kilohertz:
6000 * 1000 = 300000000 / λ
=> λ = 300000000 / 6000000
λ = 50 m
Its wavelength is 50 m.
Answer:
(-2, -3); minimum is correct.
Step-by-step explanation:
The expected number of face cards drawn in 17 trials with a number rounded to two is 3.92.
In each trial, the probability of drawing a face card is 3/13, since there are 12 face cards in a standard deck of 52 cards. The expected value of a random variable is the average of the values of each outcome. In this case, the outcome is either drawing a face card or not drawing a face card.
The value of drawing a face card is 1 since it is a success. The value of not drawing a face card is 0 since it is a failure. So, the expected number of face cards drawn in 17 trials is 3.92, calculated by the number of face cards drawn in 17 trials as 17 * (3/13) = 3.92.
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b. are fairly small
c. make loans to businesses
d. all of the above
Answer:
you have two books left over
Step-by-step explanation:
if you divide 30 by 7 you will get 4.2
that hows you have four boxes
to check yourself you can times 7 by 4 which will give you 28 and that shows you have two that wont fit
-3z 7 - (-5z 7)
Answer:
Step-by-step explanation: