X+y+z=22
(x+y+z+t)/4=8
subsitute
x+y+z=22
(22+t)/4=8
multiplly by 4
22+t=32
subtract 22
t=10
the fourth number is 10
Answer: Correct
Step-by-step explanation:
Step-by-step explanation:
range =30-10. ... range=20
Answer: y+ 11
Step-by-step explanation: