Answer:
Step-by-step explanation:
weight (x) 
12.05 0.00123
12 0.00019
11.96 0.00292
12.14 0.0159
12.12 0.00112
11.97 0.0019
11.96 0.0029
12.11 0.0092
11.94 0.0055
11.82 0.038
12 0.00019
12.18 0.028
11.91 0.0108
12.06 0.0021
11.99 0.0029

Sample size = 15

Sample standard deviation











replacing our values:



Answer:
Step-by-step explanation:
2½ hours × 640 miles/hour = 2½×640 miles = 1,600 miles
Answer:
None of these are correct? The correct answer is 34.
Step-by-step explanation:
Subtract 16 from each side, you get -x=-34
multiply each side by -1, you get x= 34
Answer:
Small gift: $2
Large gift: $7
Step-by-step explanation:
Let x represent cost of wrapping each small gift and y represent cost of wrapping each large gift.
We have been given that day one 41 small gifts were wrapped and 45 large were wrapped equaling $397.
We can represent this information in an equation as:

We are also told that day two 30 small gifts were wrapped and 47 large were wrapped equaling $389. We can represent this information in an equation as:
From equation (1), we will get:

Upon substituting this value in equation (2), we will get:










Therefore, cost to wrap a large gift is $7.
Upon substituting
in equation
, we will get:




Therefore, cost to wrap a small gift is $2.
Answer:
70
Step-by-step explanation:
i added 30% and 40