The slope of the line is -1
Answer:
x=25
Step-by-step explanation:
DEF=180, Therefore GED+GEH+HEF=180
x+30+x+40+2x+10=180
Combine like terms:
4x+80=180
subtract 80 by both sides:
4x=100
divide by 4 on both sides
x=25
The sample mean is μ=105, and sample standard deviation is σₓ=
.
The Z-score is
.
Refer to standard normal distribution table.
The required probability is

You see, the thing is, you dont