Answer:
20
Step-by-step explanation:
20
Good news: they are all like terms
9x + 5x -3x -8x = 3x
Answer:
it should be 50
Step-by-step explanation:
Using the pythagorean theorem c = 
we get 50
The function that represents surviving people are X = 2m - d
Given that there are m married couples and d of the 2m of these couples have died, the total people that remain is expressed as:
Total people remaining = Total married couple - those that died
Total married couple = 2m
Total people that died = d
Taking the difference to get the remaining people;
Total people remaining = 2m - d
Hence the function that represents surviving people are X = 2m - d
Learn more on difference here: brainly.com/question/2605546
