The high temperatures for the last seven days are: High Temperatures: 81, 78, 83, 89, 80, 87, 78 Find the MEAN of the temperatures. Round to the nearest tenths place.

A. 82.3

B. 89

C. 83

D. 78

A. 82.3 to nearest tenth.

Step-by-step explanation:

The mean

= ( 81 + 78 + 83 +, 89 + 80 + 87 + 78) / 7

= 576/7

= 82.2857.

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;