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.
For every multivitamin tablet you take, you get 0.14 grams of vitamin C.
0.14 * 30 = 4.2
The question wants the answer in milligrams.
One milligram = 0.001 gram
4.2 / 0.001 = 42000
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So, 42000 is the answer.</span>
Algebraic expression: 100 = 25 + n
Answer: n = 75
Answer:
x=-2
Step-by-step explanation:
Number......frequency.....relative frequency
10 2 2/24 = 8.3%
20 2 2/24 = 8.3%
30 4 4/24 = 16.7%
40 2 2/24 = 8.3%
50 3 3/24 = 12.5%
60 5 5/24 = 20.8%
70 3 3/24 = 12.5%
80 1 1/24 = 4.2%
90 2 2/24 = 8.3%
total : 24
