Answer:
10 hours
Step-by-step explanation:
(150/x) + 1.5 + (450/(x+15)) = 600/x
Multiply through by x(x + 15):
150(x + 15) + 1.5x(x + 15) + 450x = 600(x + 15)
150x + 2250 + 1.5x^2 + 22.5x + 450x = 600x + 9000
150x + 2250 + 1.5x^2 + 22.5x + 450x - 600x - 9000 = 0
1.5x^2 + 22.5x - 6750 = 0
x = (-22.5 +/- sqrt(22.5^2 - 4(1.5)(-6750))) / (2*1.5)
x = (-22.5 +/- sqrt(506.25 + 40500)) / 3
x = (-22.5 +/- sqrt(41006.25)) / 3
x = (-22.5 +/- 202.5) / 3
x = 180/3 or -225/3
x = 60 or -75
But a negative number doesn't make sense, so therefore x = 60, so the journey took 600/60 = 10 hours.
Answer:
Step-by-step explanation:
All work is shown above.
I am joyous to assist you anytime.
Hey there!
We know options. B and D aren't going to be your answer because they are way too big to be equivalent to 200
In order for you to find out which one is equivalent to 200 you have to calculate you late the options until you get to 200 and then you could do process of elimination!
It can't be A because 2/10 = 0.20 aka 20%
It can't be option. C because 10/20 = 0.50 aka 50%
So none of the above would be your answer
The correct answer would most likely be: 10√2
Good luck on your assignment and enjoy your day!
~LoveYourselfFirst:)
9/9 = 1 and 8/9 is only 1/9 less than 9/9 which is 1.
Answer: B) 1 8/9 is closer to 1