My average grade on a set of five tests was
88%. I can remember
only that the first four
grades were 78%,
86%, 96%, 94%. What
was my fifth grade?

86%

Step-by-step explanation:

88 times 5 = 440

78 + 86 + 96 + 94 = 354

440 - 354 = 86

what do u need to know

step-by-step explanation:

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)