Z = (x - m)/s
z = (38-40)/8
z = -2/8
z = -1/4
z = -0.25
The z score is -0.25
Answer:
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4 + 2h < -3
2h < -7
h < -3.5
x ∈ (-∞, -3.5)
We have 1 m = 100cm
⇒ 72 m = 7200 cm
⇒ 7200 / 1.5= 4800 cm = 48 m
X+2y=12
X+2y=12-12
X+2y-12=0