breezer20042
13.01.2021 •
Chemistry
QUIC
When a small volume of water is boiled, a large volume of steam is produced. Why?
Water molecules repel each other when heated.
Water molecules repel each other when heated.
The size of the water molecules increases when heated.
The size of the water molecules increases when heated.
The molecules are further apart in steam than in water.
The molecules are further apart in steam than in water.
The change from water to steam causes the number of molecules to increase.
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Ответ:
C
Explanation:
The molecules are farther apart in steam than in water.
Ответ:
800 miles
Step-by-step explanation:
Let the amount of miles = m
Company A charges a flat rate of $160 a day, and $0.60 per mile:
total = 0.60m + 160
Company B charges a flat rate of $80 a day, and $0.70 per mil:
total = 0.70m + 80
Set both equations equal to each other:
0.60m + 160 = 0.70m + 80
Isolate the variable, m. Note the equal sign, what you do to one side, you do to the other. Subtract 0.70m and 160 from both sides:
0.60m (-0.70m) + 160 (-160) = 0.70m (-0.70m) + 80 (-160)
0.60m - 0.70m = 80 - 160
Simplify:
-0.10m = -80
Isolate the variable, m. Divide -0.10 to both sides:
(-0.10m)/(-0.10) = (-80)/(-0.10)
m = 80/0.10
m = 800
At 800 miles, the rental costs are the same.