Answer: If martha has 20 apples and aaron eats 9
:- 20-9
She has 11 apples left
2.(-8) + (+5)= ?
3.(+9) - (-3) = ?
4.(+12) - (-1) = ?
5. (-7) - (-5) = ?
(-14) - (+2) = ?
Answer:
144 dollars
Step-by-step explanation:
Help me please
Answer:
64
Step-by-step explanation:
pemdas says parenthesis first
3+5=8
8(8)
8 times 8 equals 64
We can add the numbers inside the parenthenses: 8(3+5)=8(8)
Now just multiply and we get 64.
So 64 is the simplified answer
Hope this helped!
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.
Learn more about stars, click;
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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.