Answer:
22
Step-by-step explanation:
mean is calculated as
mean = 
Given the mean of 12 numbers is 20 , then
= 20 ( multiply both sides by 12 )
sum = 240
Given the mean of 8 numbers is 25 , then
= 25 ( multiply both sides by 8 )
sum = 200
Total sum of the 20 numbers = 240 + 200 = 440, then mean of 20 numbers is
mean =
= 22
Answer:
$10.93
Step-by-step explanation:
If Jack got the one month plan for two months, he would have to pay $39.95 twice.
Cost of jack getting the one month plan for two months = $39.95 x 2 = $79.90
Money saved = cost of the one month plan for two months - cost of the two months plan
$79.90 - $68.97 = $10.93
The answer is 4 of the set
Answer:
5.6
Step-by-step explanation:
you multiply the base and height then divide by 2