The table below shows the temperatures, in degrees Celsius, for a week in Alaska. What is the average temperature in the week?

2.5°C

Step-by-step explanation:

You can find the average by adding together all of the numbers and dividing the sum by the amount of numbers. In this case the numbers are 10.4, 0, -2, -2.1, and 6.2. When you add these numbers together, you get 12.5. Since there are 5 numbers, you divide 12.5 by 5 and you get...

2.5°C

true statements:

a) x + y = y + x   ⇒ commutative property of addition

b) (x * y) * z = x * (y * z) ⇒ associative property of multiplication

d) (x + y) + z = x + (y + z) ⇒ associative property of addition

false statements:

c) x - y = y - x   should be: x - y = - y + x

e) (x - y) - z = x - (y - z) should be: (x - y) - z = x - (y + z)

step-by-step explanation:

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google