Take an m out of both variables, m(-2m + 10) = -6
then set each term equal to - 6,
-2m + 10 = 6,
-2m = -4
m = 2 and m = -6
Your correct answer should be 1/4
Answer:
81 hours
Step-by-step explanation:
Let x be the time are needed
45:5 = x:9
5x = 45×9
5x = 405
x = 81