Moby middle school's bowling team has 3 bowlers. one member scored 157 and another scored 161. the average score must be at least 165 for the team to win. write and solve an inequality to show how many points the third bowler must score for a win. graph the solution. explain your answer.

We must remember that average is simply the sum of all the scores divided by the number of scores. So:

165 = (157 + 161 + X) / 3

Calculating for the score of the third bowler X:

318 + X = 495

X = 177

 

Therefore the score of the third bowler must be 177 or greater. Hence:

X ≥ 177

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.