Since the device is a speedometer, the data it read is the speed of the racecar. Data recording involving time usually uses time as the independent variable. It was also said in the problem that it records the speed every second which shows that the time interval is constant. This means that only other data, the car's speed, is the dependent variable.
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Answer: Glaciers
Water near the poles would most likely be stored as glaciers. Glaciers are slow moving rivers that are a buildup of ice and snow.
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Please write in English because I do not understand
The answer is C) the density of the rock
Density of rock is the dependent variable, because it depends on the temperature. The temperature can’t be the dependent variable because ,the density of a rock does not have magical powers that can change temperature of a room. However changing the temperature of the room ,will change the density of the rock. Hope this helps !
Answer:
Speed of motorcycle is 40 mph and speed of car is 50 mph
Explanation:
Let the peed f the motorcycle is v m /sec
According to question speed of motorcycle = 2v-30 mph
Now it is given that in two hours car is 20 miles ahead from motorcycle
Distance traveled by motorcycle in 2 hour = 2v
And distance traveled by car in two hour = 2×(2v-30)
Now according to question
4v-60 = 2v+20
2v = 80
v = 40 mph
So speed of motorcycle is 40 mph
And speed of car = 2v-30 = 2×40-30 = 50 mph
