Answer:
325 and 375 mph
Step-by-step explanation:
Given :
Distance between plane A and B = 2800
Recall :
Distance = speed * time
Let speed of A = v1
Speed of B = v2
v1 = v2 + 50
Time taken = 4 hours
Distance = speed * time
Total distance = 2800
2800 = v1 * 4 + v2 * 4
2800 = (4v1) + (4v2)
2800 = 4(v2+50) + 4v2
2800 = 4v2 + 200 + 4v2
2800 = 8v2 + 200
2800 - 200 = 8v2
2600 = 8v2
v2 = 2600/8
v2 = 325 mph
v1 = v2 + 50
v1 = 325 + 50
v1 = 375 mph
Answer:
Yes
Step-by-step explanation:
Given that there is ¹/12 foot in 1 inch, this can be interpreted as being the constant of proportionality for the relationship between feet and inches. This means, for the graph to be said to represent this relationship, the constant of proportionality, which is y/x must be ¹/12.
How do we know this? Check this out using the four points given on the graph.
(12, 1) => y/x = ¹/12
(24, 2) => y/x = ²/24 = ¹/12
(36, 3) => y/x = ³/36 = ¹/12
(48, 4) => y/x = ⁴/48 = ¹/12
As we can see, the graph represents the shows a relationship between feet and inches.
Price after 9% increased 1800
Price before increase 1800-9%*1800
=1638
