Answer:
Brian's rate is 15 km/hr
Adrian's rate is 16 km/hr
Step-by-step explanation:
Let r = Brian's rate
r + 1 = Adrian's rate
4/r = Brian's time
4/(r + 1) = Adrian's time
The difference in times is 1 min = 1/60 hr
LCD = 60r(r + 1)
4(60)(r + 1) - 4(60)r = r(r + 1)
240r + 240 - 240r = 
+ r
+ r - 240 = 0
(r - 15)(r + 16) = 0
r = 15 or r = -16
Since the rate cannot be negative, Brian's rate is 15 km/hr and Adrian's rate is 16 km/hr
(99(82)+99)/100 is the later mean of scores= 82.17
And the current mean of 82
82.17-82= 0.17 is the difference between the mean scores
Answer:
The answer is C I have the same assignment
Step-by-step explanation:
Answer:
question number 2 is correct
question number 3 is incorrect the answer is 89
question number 4 is correct
question number 5 is incorrect the answer is 31
question number 6 is correct
The domain is all the X values and the range is all of the Y values.
