Answer:
d = 576
Step-by-step explanation
Think of the two different speeds as belonging to 2 different cars going to the same place, taking the same route and going to the same place.
Let the time traveled by the fast car = t
Let the time traveled by the slower car = t+4
Let the rate of travel of the slow car = 36 mph
Let the rate of travel of the fast car = 48 mph
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d = 36*(t + 4)
d = 48 * t
Since the distance is the same, they can be equated.
48t = 36(t + 4) Remove the brackets.
48t = 36t + 144 Subtract 36t from both sides.
48t - 36t = 144 Combine
12t = 144 Divide by 12
t = 144/12
t = 12
Therefore the faster car takes 12 hours to get where it is going.
d = 48 * t
d = 48 * 12
d = 576
Answer:
y=mx+b
10=15x+B
b is whatever the number is you got to add or multiply to get the next number
Step-by-step explanation:
Average speed = 5/2 = 2.5 km/h
Answer:
<h2> (-1, 3)</h2>
Step-by-step explanation:
2x + y = 1 ⇒ y = 1 - 2x
3x - y = -6
3x - (1 - 2x) = -6
3x - 1 + 2x = -6
+1 +1
5x = -5
÷5 ÷5
x = -1
y = 1 - 2(-1) = 1 + 2 = 3
Length × width × height
2×2×2= 8 meters cubed
