Math-The low temperature for 6 consecutive days in Montana city were 9, 3, 4, 16, 11, and 5 degrees. What would the low temperature have to be on the seventh day to have a meanh low temperature of 9 degrees for the week?

To find out what the low temperature would have to be on the seventh day to have a mean low temperature of 9 degrees for the week, we need to calculate the sum of the temperatures for the first six days and then find the temperature that would make the total average 9 degrees for all seven days.

Step 1: Calculate the sum of the temperatures for the first six days.
Sum = 9 + 3 + 4 + 16 + 11 + 5 = 48

Step 2: Calculate the total number of days.
Total number of days = 6 + 1 = 7

Step 3: Calculate the desired total temperature for the week.
Desired total temperature = Total number of days * Mean temperature
Desired total temperature = 7 * 9 = 63

Step 4: Calculate the temperature needed on the seventh day.
Temperature needed on seventh day = Desired total temperature - Sum of temperatures for the first six days
Temperature needed on seventh day = 63 - 48 = 15

Therefore, the low temperature would have to be 15 degrees on the seventh day to have a mean low temperature of 9 degrees for the week.

What is ...

9*7=(9+3+4+16+11+5+T)
solve for T