REWARDING BRAINLY
Which question could be answered using a measure of center?
How many students got an A on their last math test?
If a wrestling team was put in order from lowest to highest weight class, in what weight class would the wrestler in the middle be?
What is the difference between the highest and lowest grades on last year’s Algebra I exam?
What is the range of shoe sizes in the middle school?
Answer:
1/8 or
1 1/2
Step-by-step explanation:
necesitas contar la xx
Answer: 76 m^2
Step-by-step explanation:
Answer:
a) Frequency remains constant
b) Wavelength remains constant
c) speed of the wave remains constant
d) Intensity decreases
e) amplitude of its electric field decreases
Explanation:
a) Frequency can be defined as the number of crests that pass a fixed point in the medium in unit time. It is the source of the wave that will determine the frequency. If the small source is changed to a bigger and faster one then the frequency will change. In our case, there is no change of source of wave, so the frequency remains constant.
b) The speed of of the wave is directly proportional to the wavelength. If we double the speed, the wavelength also doubles. Since the speed has not been doubled in our case, the wavelength will remain constant.
c) As indicated in b) since the wavelength is proportional to speed and it has not changed in our case, then the speed remains constant.
d) The intensity of a wave decreases as it moves further away from the source.
e) The intensity is related to the amplitude. Since the intensity decreases, the amplitude also decreases.
The x-intercepts of a function is determined by replacing y or f(x) to zero since this is the point of x where it crosses the x-axis (y=0). In this case, for f(x)= sin (x + π/4) , we substitute 0 <span>= sin (x + π/4). sin^-1 of zero is also zero and pi. hence
</span><span>x + π/4 = 0
</span>x = -<span>π/4
</span>x + π/4 = <span>π
x = 3</span><span>π/4</span>
