Human heights are one of many biological random variables that can be modeled by the normal distribution. a 2002 study in the us found the mean height for 19 year old males is 176.7 cm with a standard deviation of 9.9 cm. a basketball play is usually over 188 cm - what proportion of the 19 year old male population is greater than this height?

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.

where is the figure