Answer:
Initial value is 100
Step-by-step explanation:
A) rate of change would be dividing the number of songs wanted (100) by the number of weeks downloading (5)
100/5 = 20
since the total quantity wanted is becoming less every week the rate of change would be negative so it becomes -20
Initial value is 100, which is the total number of songs they want
Answer:
Part A:
initial value = 100 (total amount of songs to download)
rate of change = -20 songs/week (100-80 and so on)
Part B:
y = -20x + 100
The scientists use a spectroscope to determine a star's composition to study patterns in light bands that are separated from starlight.
A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources.
Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its composition based on these wavelengths.
The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy.
Hence, the scientists use a spectroscope to determine a star's composition to study patterns in light bands that are separated from starlight.
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Answer: They study patterns in light bands that are separated from starlight by the spectroscope.
Step-by-step explanation: Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its composition based on these wavelengths. The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy.
5x3=15
900/15=60
60 pieces make up the window
The ratio in simplest form is 4:5.
The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.
here, we have,
There are 16 girls and 20 boys in the school band
so, the ratio is,
16/20,
divide both by 4
and you get 4/5
Hence, the ratio in simplest form is 4:5.
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