5) at a certain high school, there are three sports: baseball, basketball, and football. some athletes at this school play two of these three, but no athlete plays in all three. at this school, the ratio of (all baseball players) to (all basketball players) to (all football players) is 15: 12: 8. how many athletes at this school play baseball?

3y/ 7

Where y =  the total number of athletes

Step-by-step explanation:

Let the total number of athletes  = y

Let the number of all  baseball athletes = b

Let the number of all  basketball athletes = k

Let the number of all  football athletes  = f

The ratio  b: k : f is given by:

15 : 12 : 8

Total proportion = 15 + 12 + 8

                           =   35

The ratio of all baseball player = 15/ 35

                                                    = 3/7

Number of baseball player =  3/7  of y

                                            = 3y/7

The means the three- seventh ( close to half) of the total athletes play baseball ball.

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950