The weight of male americans between the ages of 18 and 25 is normally distributed, with a mean of 164.5 lb and a standard deviation of 26 lb. one definition of obesity states that a person is obese if the z-score of his or her weight is greater than 2. what is the obesity threshold weight for a young adult american male? round your answer to the nearest tenth.

X>216.5 pounds

Step-by-step explanation:

Let X represent the weight of male Americans between the ages of 18 and 25.

X is normally distributed, with a mean of 164.5 lb and a standard deviation of 26 lb.

A person is obese if the z-score of his or her weight is greater than 2

Let us find out corresponding X score for z=2

Thus  a person can be considered as obese if his weight exceeds 216.5 pounds.

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

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