Step-by-step explanation:
In this problem we are expected to solve for the time taken for the second person to meet with the first.
given that
first person's speed=0.2mph
let time taken be= x
we know that
velocity= distance/time
0.2=distance/x
distance=0.2x----1
second person's speed= 0.25mpm
time taken=x-1
we know that
velocity= distance/time
0.25=distance/x-1
distance=0.25(x-1)
distance=0.25x-0.25-----2
equating equation 1 and 2 we have
0.2x=0.25x-0.25
0.2x-0.25=-0.25
-0.05x=-0.25
divide both sides by -0.05 we have
x=-0.25/-0.05
x=5
we know that the second person's time is described by
=x-1
=5-1=4min
The second person will catch up after 4 minutes
Answer:
A: (x = length y = width) x = 2y-3
B: The width equals 7
Step-by-step explanation:
B explanation: using the formula from and the information from B x = 11, 11 = 2y - 3 we add 3 to both sides 14 = 2y and divide by two, 7 = y
Answer:
x -3
Step-by-step explanation:
Make common denominators
-
Use the numerators only
2x - (3x - 3) 6
Distribute
2x - 3x + 3 6
-x + 3 6
Subtract 3 from both sides
-x 3
x -3
Answer:
its proportionality
Step-by-step explanation:
Answer: 3.33% (choice B)
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Work Shown:
A = true value = 60
B = estimated or measured value = 62
C = percent error
C = ( |A-B|/A ) * 100%
C = ( |60-62|/60 ) * 100%
C = (2/60)*100%
C = 0.0333*100%
C = 3.33%
The result is approximate.