Answer: Yes
Step-by-step explanation: hope it helps
Ya he is correct !
for any value of P, both can never be equal !
as, 5(2p-6) = 10p-30 .....so even if we put any value , negative or positive, (-30) can not be changed anyway !
thus 30-10p can never be equal to 5(2p-6) !!
the question in English
The route of a stage of a cycle tour is 213 km long and a cyclist covers 2/3 of the route in five hours.
a) How many kilometers are left to finish the stage?
b) If he continues with the same average speed, how much time does he have left to finish the stage?
Step 1
we know that
1) Total kilometers of a stage is 
2) The cyclist covers
of the route
so
the kilometers remaining to finish the stage is equal to

therefore
<u>the answer Part a) is </u>

Step 2
<u>Find the average speed of the cyclist</u>
we know that
the speed is equal to

we have

substitute

Step 3
<u>Find the time remaining to finish the stage</u>
we know that

Solve for the time

we have

substitute

therefore
<u>the answer Part b) is</u>

Answer:
a) 
b)

c) both the means of the two samples underestimate the population mean.
the mean pulse rate of sample 1 underestimates the population mean.
the mean pulse rate of sample 2 underestimates the population mean.
Step-by-step explanation:
i) population size, N = 9
a) 
b)

c) both the means of the two samples underestimate the population mean.
the mean pulse rate of sample 1 underestimates the population mean.
the mean pulse rate of sample 2 underestimates the population mean.