67592 meters in 2 weeks....2 weeks = 14 days....67592 / 14 = 4828...so he ran 4828 meters per day.
4828 + 1607.87 = 6435.87 meters for that day <==
The answer is A. to your question
Total of 55 marbles.....if there are 11 red marbles, then there are (55 - 11) = 44 green marbles. So the ratio of red marbles to green marbles is :
11:44 which reduces to 1:4 or 1/4 or 1 to 4
That negative near the second bracket will be distributed to the whole bracket.
2x^2-5x+3+x^2-4x+5 <-- Add like terms
3x^2-9x+8 <- Final ANswer
Hope that helps
The answer is C.If you would like me to explain why, just ask.You can also work backwards to figure it out.