Answer:
D: Subtract 3 from both sides
Step-by-step explanation:
5x + 3 = 13
- 3 - 3
------------------
5x = 10
--- ----
5 5
x = 2
Y=80 And x=32 or 32/1.
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Answer:
B. 34%.
Step-by-step explanation:
94 - 78 = 16 which is 2 times the standard deviation from the mean.
For a normal distribution this is 34% of the total students.
By dismantling
14 = 7 • 2
21 = 7 • 3
The least common multiple is
7 • 2 • 3 = 42
Hope this helps.