Find the mean of the first four test scores first.
(Add all numbers in set and divide by how many numbers there are)
81 + 87 + 71 + 89 = 328 / 4 = 82
Then, find the mean with the 85 added as the fifth term.
81 + 87 + 71 + 89 + 85 = 413 / 5 = 82.6
The impact that the 85 had on the mean test score was that the mean/average increased by 0.6.
Answer:y = 2x − -3 find the y and x and then identify if its zero slope or undefined.
Step-by-step explanation:
Answer:
20ft^2
Step-by-step explanation:
The length is currently three feet, if you add two feet to three that makes five feet. Five times four is twenty.
I hope this helps!
120/4=30. Remember its widthxlength. if you forget ask your teacher or look online for more help. Good luck.
Answer:
34
Step-by-step explanation:
42/21 = x/17
solve to get the answer
2 = x/17
2*17 = x/17 * 17
34 = x
