690
12×36 + 258 = 690 For extending to 20 characters
C
a ratio of 5 : 5 simplifies to 1 : 1, which basically means we require the midpoint of the line segment
using the midpoint formula
M = [ (0 + 20 ), (15 + 0)] = (10, 7.5 )
Marie will NOT complete the chapter in time
Step-by-step explanation:
If Marie writes at a constant speed of 4 pages per hour, to write a 45-page chapter she will take;
45/4 = 11.25
= 11 ¼ hours
11 ¼ hours > 8 hours
Therefore Marie will NOT complete the chapter in time
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