Answer:
first is 18
second is 36
third is -10
fourth is -10
fourth number is 9
Step-by-step explanation:
let 'x' equal the fourth number
(5+7+7+x)/4 = 7
cross-multiply to get:
19 + x = 28
x = 9
it is
because it addition it doesn't matter which way you put it
Answer: fgm
mean=9
median=9
range=16
