Answer:
class boundaries are the end points of an open interval which contains the class interval such that the lower class boundary (LCB) is the LCL minus one-half the tolerance and the upper class boundary (UCB) is the UCL plus one -half the tolerance.
combine like terms
3x+ 4x + x = 8x
therefore
8x + 9
Brainleist!
Step-by-step explanation:
See picture
Given the Mean Age of Five Children = 12
⇒ Total Age of the Chidren = 12 × 5 = 60 Years
