In 1,000,000 years, if the Mid-Atlantic Ridge continues to crack at a constant rate, New York and London will be 5592 km away from each other. I found this out by using the unit rate 2.5 cm per year to find out that in 1 million years it would be 2,500,000 cm. There are 100,000 cm in a kilometer. Therefore 2,500,000 cm is equivalent to 25 km. Add the 25 km to 5567 km to get 5592 km as the distance between the two cities.
The speed of the plane is 200 mph.
We start out with the formula d=rt, where d is distance, r is rate (speed) and t is time. We know the time is the same for both vehicles, so we will solve this formula for t:
d=rt
Divide both sides by r:
d/r = t
Since the time is the same, we will have a proportion in the form
d/r = d/r
The speed of the car is x, and it travels 150 miles. The speed of the plane is 150 faster than x, or x+150, and it travels 600 miles:
150/x = 600/(x+150)
Cross multiplying we have:
150(x+150) = 600*x
150x + 22500 = 600x
Subtract 150x from both sides:
150x + 22500 - 150x = 600x - 150x
22500 = 450x
Divide both sides by 450:
22500/450 = 450x/450
50 = x
The speed of the car is 50, and the speed of the plane is 50+150 = 200
1. Line up the decimals
2. Subtract normally as if there were no decimals
3. Move the decimal directly down.
The answer is 90.79
There are 4 sections because 4 times 8 equal 32 and 32 is more than 30 but less than 40
Divide both sides by 5 to get:
12:5
