The mean temperature for the first 4 days in January was -7°C. The mean temperature for the first 5 days in January was -6°C.
What was the temperature on the 5th day

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Write the expression as a single natural logarithm. 2 in a - 4 in y

Which expression is equivalent to (4 +6i)^2? ? -20 + 48i 8 + 12i 16 - 36i 20 + 48i