Answer:
2/3
Step-by-step explanation:
-5°F
As, in 2 hrs = - 10°F
For 1 hr = - 10°F/2 = - 5°F
So, answer = - 5°F
9 is the <u>answer</u>
Hi,
Δ = 9 - 4 * 1 * 1 = 5
the roots are :
x1 = (3 - √5) / 2
x2 = (3 + √5) / 2
