Repeated root is 3/5 ( or 0.6)
By completing the square:
25 x^2 -30x + 9 =0
25 ( x^2 -1.2x) + 9 = 0
25 (x - .6)^2 - 9 + 9 = 0
25 ( x -.6)^2 = 0 shows two roots at x = 0.6 ( or 3/5)
Is this as written: (1+i) / (2-i) * (3+i)
or is it meant to be (1+i) / [ 2-i)(3+i) ] ????
BTW 3 3/4 hr = 225 mins
1 wall takes 45 mem * 1 hr = 45 member hours to paint
if you have 12 memebers it will take 12 * x = 45 mem hrs
x = 45/12 = 3 3/4 hrs
distance = rate X time
d = 40 t
d = 55(t - 25/60) 25/60 is the number of hours that is 25 min
equate the two d's
40 t = 55 ( t-25/60)
-15t = - 22.917
t = 1 19/36 hr
at 40 mi/hr this is distance = rate X time
= 40 X 1 19/36 = 61 1/9 miles
b = brother's money y = your money
y-5 = b + 5 Given re-arrange to y = b + 10
y+10 = 2 ( b-10) Given Sub in y = b+10
(b+10) + 10 = 2b -20
b+20 = 2b -20
b = 40 dollars y = 50 dollars
The integers can be represented as
x x+1 x+2 x+3 x+4 x+5 x+6 summed = 7x + 21 and this equals 214 (x+6)
7x+21 = 214 (x+6)
7x + 21 = 214 x + 1284
- 1263 = 207 x
x = 6 7/69 <===== did you post your question with the correct numbers ?
