3. Leah is a pediatric nurse who conducts the first neonatal exam on newborn patients. Of her patients, 30% of them have blue eyes, 60% of them have a slow heart rate, and 18% of them have both blue eyes
and a slow heart rate. What is the probability that a randomly selected baby has blue eyes or a slow heart
rate?
(1) 72%
(2) 108%
(3) 90%
(4) 48%

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

14 ft 7 inches

step-by-step explanation:

since each model inch corresponds to 25 real inches, 7 model inches will correspond to

7×25" = 175"

at 12" per foot, that is 14 feet, 7 inches.

ask the math teacher she or he would know lol.

step-by-step explanation: