Answer:
x equals plus or minus square root of 5 minus 1
Step-by-step explanation:
we have
Divide by 2 the coefficient of the x-term
squared the number
Adds both sides
Rewrite as perfect squares
take the square root both sides
therefore
x equals plus or minus square root of 5 minus 1
36 minutes.
(1/20)x+(1/30)x=1solve for x (x=0.8333333333......)
Considering they take the same times for all 3 pounds,
That would mean that since 1 pound takes 12 minutes, then 3 pounds take 36 minutes
BIDMAS so do the 7+3 first = 10
[10 x 5 - 4] (divided by) (2+3)
then work out both brackets by doing the multiplication first
[10 x 5 - 4] = [50 - 4] = 46
(2 + 3) = 5
46 divided by 5 = 9.2
