Answer:
1) Distance=Speed*time
90=(x+1)*(x)+(2x+5)(x-1)
90=x^2+x+2x^2-2x+5x-5
3x^2+4x-95=0
2) 3x^2+4x-95=0. Using quadratic formula, we get
x=(-4±sqrt(16-4*3*(-95)<u>)</u>)/6, x=5 or - 19/5 but since x also represents time, it can't be negative.
3) Total time take she took for the journey is x+x-1=2x-1=2*5-1=9 hours
I think you are asking to sort them according to the shortest to longest in length. For this, it would be helpful to write the fraction into decimal. The equivalent values are as follows:
5/6 = 0.83
5/3 = 1.67
3/2 = 1.50
Therefore, the correct sorting would be as follows:
first yarn
third yarn
second yarn
Hope this answers the question. Have a nice day.
Since this is a 45-45-90 triangle, n = 6 and m = 6√3.
I hope this helps!
Jayne will need to drive 40 mph on the way back.
