What is the √ 100 / 4x squared
1 answer:
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Answer:
r = 4
Step-by-step explanation:
Calculate the slope m using the slope formula and equate to 5
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (7, r ) and (x₂, y₂ ) = (8, 9)
m = =
= 9 - r = 5 ( subtract 9 from both sides )
- r = - 4 ( multiply both sides by - 1 )
r = 4
<u>Answer:</u>
It will take 2 hours 36 minutes for the two trains to meet.
<u>Step-by-step explanation:</u>
The distance between the two trains is decreasing by miles per hour, which can be written as
.
So at this rate, the distance between the trains will be reduced to zero in:
Changing 2.6 hours to hours and minutes:
Therefore, it will take 2 hours 36 minutes for the two trains to meet.